{"id":1291,"date":"2026-05-23T16:03:03","date_gmt":"2026-05-23T16:03:03","guid":{"rendered":"https:\/\/cartervalves.com\/?p=1291"},"modified":"2026-05-23T16:03:05","modified_gmt":"2026-05-23T16:03:05","slug":"what-is-vena-contracta","status":"publish","type":"post","link":"https:\/\/cartervalves.com\/ar\/what-is-vena-contracta\/","title":{"rendered":"\u0645\u0627 \u0647\u0648 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f\u061f \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0621 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0623\u0646 \u064a\u0639\u0631\u0641\u0647\u0627 \u0643\u0644 \u0645\u0647\u0646\u062f\u0633 \u0635\u0645\u0627\u0645\u0627\u062a"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover.webp\" alt=\"\u0645\u062e\u0637\u0637 \u062a\u062f\u0641\u0642 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 - 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\u0627\u0644\u0645\u0632\u064a\u062f \u0639\u0646 \u0630\u0644\u0643 \u0623\u062f\u0646\u0627\u0647.<\/p>\n\n\n\n<p><strong>\u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0631\u0629<\/strong> (\u0627\u0644\u0641\u0631\u0627\u0634\u0629\u060c \u0627\u0644\u0643\u0631\u0629) \u0644\u0647\u0627 \u0645\u0646\u0627\u0637\u0642 \u062a\u062f\u0641\u0642 \u063a\u064a\u0631 \u0645\u0646\u062a\u0638\u0645\u0629 \u0627\u0644\u0645\u0642\u0637\u0639 \u0627\u0644\u0639\u0631\u0636\u064a \u062a\u062a\u063a\u064a\u0631 \u0628\u0627\u0633\u062a\u0645\u0631\u0627\u0631 \u0645\u0639 \u0648\u0636\u0639 \u0627\u0644\u0642\u0631\u0635 \u0623\u0648 \u0627\u0644\u0643\u0631\u0629. \u064a\u0643\u0648\u0646 \u062a\u0642\u064a\u064a\u062f \u0627\u0644\u062a\u062f\u0641\u0642 \u063a\u064a\u0631 \u0645\u062a\u0645\u0627\u062b\u0644\u060c \u062e\u0627\u0635\u0629\u064b \u0639\u0646\u062f \u0627\u0644\u0641\u062a\u062d \u0627\u0644\u062c\u0632\u0626\u064a\u060c \u0648\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u063a\u064a\u0631 \u0645\u0648\u0642\u0639 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u0645\u0639 \u0627\u062e\u062a\u0646\u0627\u0642 \u0627\u0644\u0635\u0645\u0627\u0645. \u0639\u0646\u062f \u0641\u062a\u062d\u0627\u062a \u0645\u0639\u064a\u0646\u0629\u060c \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062a\u0634\u0643\u0644 \u0645\u0646\u0627\u0637\u0642 \u0645\u0648\u0636\u0639\u064a\u0629 \u0630\u0627\u062a \u0636\u063a\u0637 \u0645\u0646\u062e\u0641\u0636 \u0644\u0644\u063a\u0627\u064a\u0629 \u0642\u0628\u0644 \u0623\u0646 \u064a\u0635\u0644 \u0645\u0633\u0627\u0631 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0643\u0644\u064a \u0625\u0644\u0649 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 - \u0645\u0645\u0627 \u064a\u062c\u0639\u0644 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0631\u0629 \u0623\u0643\u062b\u0631 \u0639\u0631\u0636\u0629 \u0644\u0644\u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0645\u0628\u0643\u0631 \u0639\u0646\u062f \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u0645\u0642\u0627\u0631\u0646\u0629\u064b \u0628\u0635\u0645\u0627\u0645 \u0643\u0631\u0648\u064a \u0628\u062d\u062c\u0645 \u0635\u0645\u0627\u0645 \u0643\u0631\u0648\u064a \u0628\u0646\u0641\u0633 Cv.<\/p>\n\n\n\n<p><strong>\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0643\u0631\u0629 \u0627\u0644\u0623\u0631\u0636\u064a\u0629 \u0627\u0644\u0645\u0648\u062c\u0647\u0629 \u0628\u0627\u0644\u0642\u0641\u0635<\/strong> \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0642\u0641\u0627\u0635 \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0644\u062a\u0642\u0633\u064a\u0645 \u062a\u0642\u064a\u064a\u062f \u0627\u0644\u062a\u062f\u0641\u0642 \u0625\u0644\u0649 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0635\u063a\u064a\u0631\u0629\u060c \u0643\u0644 \u0645\u0646\u0647\u0627 \u064a\u0634\u0643\u0644 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u0627\u0644\u062e\u0627\u0635 \u0628\u0647. \u0648\u0645\u0646 \u062e\u0644\u0627\u0644 \u062a\u0646\u0638\u064a\u0645 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637 \u0639\u0628\u0631 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0642\u064a\u0648\u062f \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0648\u0627\u062d\u062f \u0643\u0628\u064a\u0631\u060c \u064a\u0628\u0642\u0649 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0644\u0636\u063a\u0637 \u0639\u0646\u062f \u0643\u0644 \u0648\u0631\u064a\u062f \u0645\u0646\u0641\u0631\u062f\u0629 \u0645\u0646 \u0627\u0644\u0642\u064a\u0648\u062f \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u0623\u0639\u0644\u0649 - \u0648\u0647\u0630\u0627 \u0647\u0648 \u0627\u0644\u0623\u0633\u0627\u0633 \u0627\u0644\u0645\u0646\u0637\u0642\u064a \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0648\u0631\u0627\u0621 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0642\u0637\u0639 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0645\u0631\u0627\u062d\u0644 \u0627\u0644\u0645\u0636\u0627\u062f \u0644\u0644\u062a\u062c\u0648\u064a\u0641.<\/p>\n\n\n\n<p>\u064a\u0628\u062f\u0623 \u0641\u0647\u0645 \u0646\u0648\u0639 \u0627\u0644\u0635\u0645\u0627\u0645 \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u062e\u062f\u0645\u0629 \u0645\u0639\u064a\u0646\u0629 \u0628\u0641\u0647\u0645 \u0645\u0627 \u064a\u0644\u064a <a href=\"https:\/\/cartervalves.com\/ar\/what-is-a-control-valve-types-components\/\">\u0643\u064a\u0641 \u062a\u0639\u0645\u0644 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u0645\u0627 \u0647\u064a \u0647\u0646\u062f\u0633\u0629 \u062a\u0642\u0644\u064a\u0645\u0647\u0627 \u0627\u0644\u0645\u0635\u0645\u0645\u0629 \u0644\u0644\u0642\u064a\u0627\u0645 \u0628\u0647<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0636\u063a\u0637 \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0639\u0642\u062f\u0629 \u0627\u0644\u0648\u0631\u064a\u062f\u064a\u0629: \u0639\u0627\u0645\u0644 \u0641\u0644\u0648\u0631\u064a\u062f\u0627<\/h2>\n\n\n\n<p>\u0627\u0644\u0633\u0624\u0627\u0644 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0644\u062a\u062d\u062f\u064a\u062f \u062d\u062c\u0645 \u0635\u0645\u0627\u0645 \u062e\u062f\u0645\u0629 \u0627\u0644\u0633\u0627\u0626\u0644 \u0647\u0648: <em>\u0645\u0627 \u0645\u062f\u0649 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0641\u0639\u0644\u064a \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635\u061f<\/em><\/p>\n\n\n\n<p>\u062a\u0645\u064a\u0632 \u0627\u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0644\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0647\u0630\u0627 \u0627\u0644\u0623\u0645\u0631 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0645\u0639\u0644\u0645\u0629 \u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0639\u062f\u064a\u0645\u0629 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u062a\u0633\u0645\u0649 <strong>\u0639\u0627\u0645\u0644 \u0627\u0633\u062a\u0631\u062f\u0627\u062f \u0636\u063a\u0637 \u0627\u0644\u0633\u0627\u0626\u0644\u060c \u0641\u0644\u0648\u0631\u064a\u062f\u0627<\/strong>.<\/p>\n\n\n\n<p>\u064a\u062a\u0645 \u062a\u0639\u0631\u064a\u0641 FL \u0628\u0627\u0644\u0639\u0644\u0627\u0642\u0629:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>P_vc = P\u2081 - (P\u2081 - P\u2082) \/ FL\u00b2<\/strong><\/p><\/blockquote>\n\n\n\n<p>\u0623\u064a\u0646:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u2081 = \u0636\u063a\u0637 \u0627\u0644\u0645\u0646\u0628\u0639 \u0627\u0644\u0645\u0637\u0644\u0642<\/li>\n<li>P\u2082 = \u0636\u063a\u0637 \u0627\u0644\u0645\u0635\u0628 \u0627\u0644\u0645\u0637\u0644\u0642<\/li>\n<li>P_vc = \u0627\u0644\u0636\u063a\u0637 \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635<\/li>\n<li>FL = \u0639\u0627\u0645\u0644 \u0627\u0633\u062a\u0631\u062f\u0627\u062f \u0636\u063a\u0637 \u0627\u0644\u0633\u0627\u0626\u0644 (\u062e\u0627\u0635 \u0628\u0627\u0644\u0635\u0645\u0627\u0645\u060c \u0645\u0646\u0634\u0648\u0631 \u0641\u064a \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629)<\/li>\n<\/ul>\n\n\n\n<p>\u0627\u0644\u0641\u0643\u0631\u0629 \u0627\u0644\u0645\u0647\u0645\u0629 \u0645\u0646 \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629: \u0623 <strong>\u0642\u064a\u0645\u0629 FL \u0623\u0642\u0644<\/strong> \u064a\u0639\u0646\u064a \u0623\u0646 \u0627\u0644\u0636\u063a\u0637 \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u064a\u0646\u062e\u0641\u0636 <em>\u0627\u0644\u0645\u0632\u064a\u062f<\/em> \u0623\u0642\u0644 \u0645\u0646 \u0636\u063a\u0637 \u0627\u0644\u0645\u0646\u0628\u0639 \u0644\u0636\u063a\u0637 P\u2081-P\u2082 \u062a\u0641\u0627\u0636\u0644\u064a \u0645\u0639\u064a\u0646. \u062a\u0643\u0648\u0646 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u0628\u0637\u0628\u064a\u0639\u062a\u0647\u0627 \u0623\u0643\u062b\u0631 \u0639\u0631\u0636\u0629 \u0644\u0644\u062a\u062c\u0648\u064a\u0641 \u0639\u0646\u062f \u0646\u0641\u0633 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637.<\/p>\n\n\n\n<p>\u062a\u062e\u062a\u0644\u0641 \u0642\u064a\u0645 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u0633\u0637\u062d \u0627\u0644\u0645\u0633\u0637\u062d \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u062d\u0633\u0628 \u0646\u0648\u0639 \u0627\u0644\u0635\u0645\u0627\u0645:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0643\u0631\u0629 \u0627\u0644\u0623\u0631\u0636\u064a\u0629: FL \u2248 0.85-0.92 (\u0645\u0631\u062a\u0641\u0639 - \u0644\u0627 \u064a\u062a\u0639\u0627\u0641\u0649 \u0627\u0644\u0636\u063a\u0637 \u0643\u062b\u064a\u0631\u064b\u0627 \u0628\u0639\u062f \u0627\u0644\u0645\u0642\u0639\u062f\u061b \u064a\u0643\u0648\u0646 \u0627\u0646\u0642\u0628\u0627\u0636 \u0627\u0644\u0648\u0631\u064a\u062f \u0634\u062f\u064a\u062f\u064b\u0627 \u0648\u0644\u0643\u0646\u0647 \u0645\u0636\u063a\u0648\u0637)<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0641\u0631\u0627\u0634\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621 (\u062b\u0644\u0627\u062b\u064a\u0629 \u0627\u0644\u0625\u0632\u0627\u062d\u0629\/ \u0633\u062f\u0627\u0633\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0632): FL \u2248 0.75-0.90 (\u062d\u0633\u0628 \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0642\u0631\u0635 \u0648\u0632\u0627\u0648\u064a\u0629 \u0627\u0644\u0641\u062a\u062d)<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0641\u0631\u0627\u0634\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0645\u0632\u062f\u0648\u062c\u0629 \u0627\u0644\u0645\u0631\u0643\u0632: FL \u2248 0.55-0.70 (\u0645\u0646\u062e\u0641\u0636\u0629 - \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0646\u062a\u062c \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u0636\u063a\u0637\u064b\u0627 \u0623\u0642\u0644 \u0628\u0643\u062b\u064a\u0631 \u0644\u0646\u0641\u0633 \u0394P \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a)<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0643\u0631\u0648\u064a\u0629: FL \u2248 0.60-0.75 (\u062a\u062e\u062a\u0644\u0641 \u0628\u0634\u062f\u0629 \u062d\u0633\u0628 \u0646\u0645\u0637 \u0627\u0644\u0642\u0637\u0639 \u0648\u0646\u0633\u0628\u0629 \u0627\u0644\u0641\u062a\u062d)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1335\" height=\"731\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison.webp\" alt=\"\u0645\u0642\u0627\u0631\u0646\u0629 \u0639\u0627\u0645\u0644 \u0627\u0633\u062a\u0631\u062f\u0627\u062f \u0627\u0644\u0636\u063a\u0637 FL \u062d\u0633\u0628 \u0646\u0648\u0639 \u0627\u0644\u0635\u0645\u0627\u0645 - \u0627\u0644\u0643\u0631\u0629 \u0627\u0644\u0623\u0631\u0636\u064a\u0629\u060c \u0627\u0644\u0643\u0631\u0629 \u0627\u0644\u0643\u0631\u0648\u064a\u0629\u060c \u0627\u0644\u0641\u0631\u0627\u0634\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629\u060c \u0627\u0644\u0641\u0631\u0627\u0634\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621\" class=\"wp-image-1293\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison.webp 1335w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-300x164.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-1024x561.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-768x421.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-18x10.webp 18w\" sizes=\"(max-width: 1335px) 100vw, 1335px\" \/><\/figure>\n\n\n\n<p>\u0648\u0644\u0647\u0630\u0627 \u0627\u0644\u0633\u0628\u0628 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062a\u0635\u0631\u0641 \u0635\u0645\u0627\u0645\u0627\u0646 \u0628\u062a\u0642\u064a\u064a\u0645\u0627\u062a Cv \u0645\u062a\u0637\u0627\u0628\u0642\u0629 \u0628\u0634\u0643\u0644 \u0645\u062e\u062a\u0644\u0641 \u062a\u0645\u0627\u0645\u064b\u0627 \u0641\u064a \u062e\u062f\u0645\u0629 \u0627\u0644\u062a\u062c\u0648\u064a\u0641. \u0644\u0627 \u064a\u0645\u0643\u0646 \u062a\u0628\u062f\u064a\u0644 \u0641\u0644\u0648\u0631\u064a\u062f\u0627 \u0641\u0644\u0648\u0631\u064a\u062f\u0627 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0639\u0628\u0631 \u0623\u0646\u0645\u0627\u0637 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a - \u064a\u062c\u0628 \u0641\u062d\u0635\u0647\u0627 \u0645\u0642\u0627\u0628\u0644 \u0638\u0631\u0648\u0641 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0641\u064a \u0645\u0631\u062d\u0644\u0629 \u0627\u0644\u062a\u062d\u062c\u064a\u0645.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0648\u0627\u0644\u062a\u062c\u0648\u064a\u0641: \u0622\u0644\u064a\u0629 \u0627\u0644\u062a\u0644\u0641<\/h2>\n\n\n\n<p>\u064a\u0628\u062f\u0623 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635. \u0639\u0646\u062f\u0645\u0627 \u064a\u0642\u0644 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u0648\u0636\u0639\u064a P_vc \u0639\u0646 <strong>\u0636\u063a\u0637 \u0628\u062e\u0627\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 (Pv)<\/strong> \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u062f\u0641\u0642\u060c \u064a\u062a\u0628\u062e\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 \u0645\u062d\u0644\u064a\u064b\u0627 \u0648\u062a\u062a\u0643\u0648\u0646 \u0641\u0642\u0627\u0639\u0627\u062a \u0628\u062e\u0627\u0631 \u0641\u064a \u0627\u0644\u0646\u0641\u0627\u062b\u0629.<\/p>\n\n\n\n<p>\u062a\u064f\u062d\u0645\u0644 \u0647\u0630\u0647 \u0627\u0644\u0641\u0642\u0627\u0639\u0627\u062a \u0625\u0644\u0649 \u0623\u0633\u0641\u0644 \u0627\u0644\u0645\u062c\u0631\u0649 \u0645\u0639 \u0627\u0644\u062a\u062f\u0641\u0642. \u0648\u0645\u0639 \u062a\u0645\u062f\u062f \u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0625\u0644\u0649 \u0645\u0627 \u0628\u0639\u062f \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635\u060c \u064a\u062a\u0639\u0627\u0641\u0649 \u0627\u0644\u0636\u063a\u0637. \u0639\u0646\u062f\u0645\u0627 \u064a\u0631\u062a\u0641\u0639 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u062d\u0644\u064a \u0645\u0631\u0629 \u0623\u062e\u0631\u0649 \u0641\u0648\u0642 Pv\u060c \u062a\u0646\u0647\u0627\u0631 \u0627\u0644\u0641\u0642\u0627\u0639\u0627\u062a - \u0628\u0633\u0631\u0639\u0629 \u0648\u0628\u0639\u0646\u0641. \u064a\u0648\u0644\u062f \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0641\u0642\u0627\u0639\u0627\u062a \u0637\u0641\u0631\u0627\u062a \u0636\u063a\u0637 \u0645\u0648\u0636\u0639\u064a\u0629 \u062a\u0645 \u0642\u064a\u0627\u0633\u0647\u0627 \u0641\u064a \u0627\u0644\u062f\u0631\u0627\u0633\u0627\u062a \u0627\u0644\u062a\u064a \u0623\u0634\u0627\u0631\u062a \u0625\u0644\u064a\u0647\u0627 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 IEC 60534-8-2 \u0628\u0642\u0648\u0649 \u0642\u0627\u062f\u0631\u0629 \u0639\u0644\u0649 \u0625\u0646\u062a\u0627\u062c \u0636\u063a\u0648\u0637 \u0635\u062f\u0645\u0627\u062a \u0646\u0641\u0627\u062b\u0629 \u062f\u0642\u064a\u0642\u0629 \u0639\u0627\u0644\u064a\u0629 \u0628\u0645\u0627 \u064a\u0643\u0641\u064a \u0644\u062a\u062b\u0642\u064a\u0628 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0627\u0644\u0635\u0644\u0628\u0629 \u0639\u0644\u0649 \u0645\u062f\u0649 \u062f\u0648\u0631\u0627\u062a \u0645\u062a\u0643\u0631\u0631\u0629.<\/p>\n\n\n\n<p>\u0625\u0646 \u0646\u0645\u0637 \u0627\u0644\u062a\u0644\u0641 \u0645\u0645\u064a\u0632: \u062a\u0646\u0642\u0631 \u0648\u062a\u0641\u062a\u062a \u0648\u062c\u0648\u0647 \u0627\u0644\u0645\u0642\u0639\u062f\u060c \u0648\u062d\u0648\u0627\u0641 \u0627\u0644\u0623\u0642\u0631\u0627\u0635\u060c \u0648\u062c\u062f\u0631\u0627\u0646 \u0627\u0644\u0642\u0641\u0635\u060c \u0648\u0623\u0633\u0637\u062d \u0627\u0644\u062c\u0633\u0645 \u0641\u064a \u0627\u062a\u062c\u0627\u0647 \u0627\u0644\u0645\u0635\u0628 - \u062a\u062a\u0631\u0643\u0632 \u0641\u064a \u0627\u0644\u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u062a\u064a \u064a\u062d\u062f\u062b \u0641\u064a\u0647\u0627 \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0641\u0642\u0627\u0639\u0629. \u0639\u0644\u0649 \u0639\u0643\u0633 \u0627\u0644\u0648\u0645\u064a\u0636 (\u062d\u064a\u062b \u064a\u0628\u0642\u0649 \u0627\u0644\u0628\u062e\u0627\u0631 \u0641\u064a \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0641\u0644\u064a)\u060c \u064a\u062a\u0636\u0645\u0646 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u062d\u062f\u0648\u062b \u062f\u0648\u0631\u0629 \u0627\u0644\u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0643\u0627\u0645\u0644\u0629 <em>\u062f\u0627\u062e\u0644 \u062c\u0633\u0645 \u0627\u0644\u0635\u0645\u0627\u0645<\/em>, \u0645\u0645\u0627 \u064a\u062c\u0639\u0644\u0647\u0627 \u0623\u0643\u062b\u0631 \u062a\u062f\u0645\u064a\u0631\u0627\u064b \u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u0634\u0630\u064a\u0628.<\/p>\n\n\n\n<p>\u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0634\u0631\u062d \u0645\u0641\u0635\u0644 \u0644\u0643\u064a\u0641\u064a\u0629 \u0627\u062e\u062a\u0644\u0627\u0641 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0648\u0627\u0644\u0648\u0645\u064a\u0636 \u0641\u064a \u0641\u064a\u0632\u064a\u0627\u0621 \u0648\u0623\u0646\u0645\u0627\u0637 \u0627\u0644\u0636\u0631\u0631 \u0648\u0627\u0644\u062a\u062f\u0627\u0628\u064a\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u0645\u0636\u0627\u062f\u0629\u060c \u0631\u0627\u062c\u0639 \u062f\u0644\u064a\u0644 \u0643\u0627\u0631\u062a\u0631 \u0644\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0644 <a href=\"https:\/\/cartervalves.com\/ar\/cavitation-vs-flashing-in-control-valves\/\">\u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0648\u0645\u064a\u0636 \u0641\u064a \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u0639\u0646\u062f\u0645\u0627 \u064a\u0642\u0648\u062f \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0627\u0644\u0648\u0631\u064a\u062f\u064a \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642<\/h2>\n\n\n\n<p>\u0647\u0646\u0627\u0643 \u0639\u062a\u0628\u0629 \u062d\u0631\u062c\u0629 \u062b\u0627\u0646\u064a\u0629 \u062a\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u062a\u062c\u0648\u064a\u0641: <strong>\u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642<\/strong>.<\/p>\n\n\n\n<p>\u064a\u062d\u062f\u062b \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642 \u0639\u0646\u062f\u0645\u0627 \u064a\u0635\u0644 \u0636\u063a\u0637 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u0625\u0644\u0649 \u0636\u063a\u0637 \u0628\u062e\u0627\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 \u0648\u064a\u062a\u0643\u0648\u0646 \u0637\u0648\u0631 \u0628\u062e\u0627\u0631 \u0645\u0633\u062a\u0642\u0631 \u0641\u064a \u0627\u0644\u0646\u0641\u0627\u062b\u0629. \u0639\u0646\u062f \u0647\u0630\u0647 \u0627\u0644\u0646\u0642\u0637\u0629\u060c \u064a\u062a\u0648\u0642\u0641 \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0639\u0646 \u0627\u0644\u0632\u064a\u0627\u062f\u0629 \u062d\u062a\u0649 \u0644\u0648 \u0627\u0633\u062a\u0645\u0631 \u0641\u064a \u062a\u0642\u0644\u064a\u0644 \u0636\u063a\u0637 \u0627\u0644\u0645\u0635\u0628. \u064a\u0643\u0648\u0646 \u0627\u0644\u0635\u0645\u0627\u0645 \"\u0645\u062e\u062a\u0646\u0642\u064b\u0627\" - \u0641\u0642\u062f \u0648\u0635\u0644 \u0625\u0644\u0649 \u0633\u0642\u0641\u0647 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a \u0644\u062a\u0644\u0643 \u0627\u0644\u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0646 \u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u0646\u0628\u0639.<\/p>\n\n\n\n<p>\u0647\u0630\u0627 \u0647\u0648 \u0627\u0644\u0634\u0631\u0637 \u0627\u0644\u0645\u0646\u0635\u0648\u0635 \u0639\u0644\u064a\u0647 \u0631\u0633\u0645\u064a\u064b\u0627 \u0641\u064a IEC 60534-2-1 \u0648ISA-75.01.01\u060c \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0644\u062a\u062d\u062f\u064a\u062f \u062d\u062c\u0645 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645. \u064a\u062a\u0645 \u062d\u0633\u0627\u0628 \u0627\u0646\u062e\u0641\u0627\u0636 \u0636\u063a\u0637 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642 \u0394P_choked \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 FL \u0648\u0636\u063a\u0637 \u0628\u062e\u0627\u0631 \u0627\u0644\u0645\u0627\u0626\u0639:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\u0394P_choked = FL\u00b2 \u00d7 (P\u2081 - FF \u00d7 Pv)<\/strong><\/p><\/blockquote>\n\n\n\n<p>\u062d\u064a\u062b FF \u0647\u0648 \u0639\u0627\u0645\u0644 \u0646\u0633\u0628\u0629 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u062d\u0631\u062c \u0644\u0644\u0633\u0627\u0626\u0644\u060c \u062d\u0648\u0627\u0644\u064a 0.96 - 0.28 \u00d7 \u221a (Pv\/Pc)\u060c \u062d\u064a\u062b Pc \u0647\u0648 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u062d\u0631\u062c \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0644\u0644\u0633\u0627\u0626\u0644.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1335\" height=\"880\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow.webp\" alt=\"\u0645\u0646\u062d\u0646\u0649 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0648\u0627\u0635\u0641\u0629 IEC 60534-2-1 - \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u062c\u0630\u0631 \u0627\u0644\u062a\u0631\u0628\u064a\u0639\u064a \u0644\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0630\u064a \u064a\u0648\u0636\u062d \u0627\u0644\u0627\u0646\u062d\u0631\u0627\u0641 \u0639\u0646\u062f \u0646\u0642\u0637\u0629 \u0627\u0644\u0627\u062e\u062a\u0646\u0627\u0642 \u0639\u0646\u062f\u0645\u0627 \u064a\u0635\u0644 \u0636\u063a\u0637 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0642\u0644\u0635 \u0625\u0644\u0649 \u0636\u063a\u0637 \u0627\u0644\u0628\u062e\u0627\u0631\" class=\"wp-image-1294\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow.webp 1335w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-300x198.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-1024x675.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-768x506.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-18x12.webp 18w\" sizes=\"(max-width: 1335px) 100vw, 1335px\" \/><\/figure>\n\n\n\n<p>\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0644\u0644\u0645\u0647\u0646\u062f\u0633\u064a\u0646: <strong>\u0625\u0630\u0627 \u0642\u0645\u062a \u0628\u062a\u062d\u062f\u064a\u062f \u0645\u0642\u0627\u0633 \u0627\u0644\u0635\u0645\u0627\u0645 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 P\u2081 - P\u2082 \u0641\u0642\u0637 \u062f\u0648\u0646 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0638\u0631\u0648\u0641 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u062a\u062f\u0641\u0639 \u0394P \u0625\u0644\u0649 \u0645\u0627 \u0628\u0639\u062f \u0394P_choked\u060c \u0641\u0644\u0646 \u064a\u0648\u0641\u0631 \u0627\u0644\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062a\u0648\u0642\u0639.<\/strong> \u0633\u0648\u0641 \u062a\u062a\u062c\u0648\u0641 \u0648\u062a\u062e\u062a\u0646\u0642 \u0648\u0645\u0646 \u0627\u0644\u0645\u062d\u062a\u0645\u0644 \u0623\u0646 \u062a\u062a\u0639\u0637\u0644 \u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u064b\u0627 \u0642\u0628\u0644 \u0623\u0646 \u062a\u0633\u062a\u0642\u0631 \u0639\u0646\u062f \u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629.<\/p>\n\n\n\n<p>\u0648\u0647\u0630\u0627 \u0647\u0648 \u0633\u0628\u0628 \u0648\u062c\u0648\u062f \u0625\u0637\u0627\u0631\u064a \u0627\u0644\u062a\u0633\u0631\u0628 \u0648\u0627\u0644\u062a\u062d\u062c\u064a\u0645 ANSI\/FCI 70-2 \u0648IEC 60534 IEC 60534 - \u0644\u0641\u0631\u0636 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0638\u0631\u0648\u0641 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0643\u062e\u0637\u0648\u0629 \u0645\u0637\u0644\u0648\u0628\u0629 \u0641\u064a \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0635\u0645\u0627\u0645\u060c \u0648\u0644\u064a\u0633 \u0643\u062e\u0637\u0648\u0629 \u0644\u0627\u062d\u0642\u0629. \u0645\u0631\u0627\u062c\u0639\u0629 <a href=\"https:\/\/cartervalves.com\/ar\/ansi-fci-70-2-iec-60534-control-valve-leakage-sizing\/\">\u0643\u064a\u0641 \u062a\u0639\u0645\u0644 \u0641\u0626\u0627\u062a \u062a\u0633\u0631\u0628 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062a\u062d\u062c\u064a\u0645 \u0645\u0639\u064b\u0627<\/a> \u0647\u064a \u0627\u0644\u062e\u0637\u0648\u0629 \u0627\u0644\u0645\u0646\u0637\u0642\u064a\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629 \u0628\u0639\u062f \u0641\u0647\u0645 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u0643\u064a\u0641 \u064a\u062a\u062d\u0643\u0645 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0641\u064a \u0634\u062f\u0629 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f<\/h2>\n\n\n\n<p>\u064a\u0645\u062a\u0644\u0643 \u0645\u0647\u0646\u062f\u0633\u0648 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0623\u062f\u0648\u0627\u062a \u0644\u0644\u062d\u062f \u0645\u0646 \u0627\u062d\u062a\u0645\u0627\u0644\u064a\u0629 \u062a\u0644\u0641 \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0641\u064a \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0633\u0627\u0626\u0644\u0629 \u0627\u0644\u0634\u062f\u064a\u062f\u0629:<\/p>\n\n\n\n<p><strong>\u062a\u0642\u0644\u064a\u0645 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0645\u0631\u0627\u062d\u0644 (\u062a\u062e\u0641\u064a\u0636 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0645\u0631\u0627\u062d\u0644)<\/strong> - 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\u062e\u0627\u0635\u0629\u064b \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0639\u0627\u0644\u064a \u0623\u0648 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u0623\u0648 \u0638\u0631\u0648\u0641 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0631\u062d\u0644\u062a\u064a\u0646 - \u0641\u0625\u0646 \u0641\u0647\u0645 \u0638\u0631\u0648\u0641 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0633\u0627\u0626\u0644\u0629 \u0641\u064a \u0645\u0647\u0645\u062a\u0643 \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0647\u0648 \u0646\u0642\u0637\u0629 \u0627\u0644\u0628\u062f\u0627\u064a\u0629 \u0627\u0644\u0635\u062d\u064a\u062d\u0629.<\/p>\n\n\n\n<p>\u064a\u0639\u0645\u0644 \u0641\u0631\u064a\u0642 \u0643\u0627\u0631\u062a\u0631 \u0641\u0627\u0644\u0641 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0644\u062f\u0649 \u0643\u0627\u0631\u062a\u0631 \u0641\u0627\u0644\u0641 \u0645\u0646 \u062e\u0644\u0627\u0644 \u062a\u062d\u062f\u064a\u062f \u062d\u062c\u0645 \u0627\u0644\u0635\u0645\u0627\u0645 \u0648\u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0639\u0627\u062f\u0644 \u0648\u062a\u0642\u064a\u064a\u0645 \u0645\u062e\u0627\u0637\u0631 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0641\u064a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632 \u0648\u0627\u0644\u063a\u0627\u0632 \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0637\u0628\u064a\u0639\u064a \u0627\u0644\u0645\u0633\u0627\u0644 \u0648\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0648\u062a\u0648\u0644\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629. \u0646\u062d\u0646 \u0646\u062f\u0639\u0645 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0648\u0627\u062c\u0628 \u0648\u064a\u0645\u0643\u0646\u0646\u0627 \u062a\u0648\u0641\u064a\u0631 \u0628\u064a\u0627\u0646\u0627\u062a FL \u0648\u0641\u062d\u0648\u0635\u0627\u062a \u0627\u0644\u062a\u062d\u062c\u064a\u0645 \u0645\u0642\u0627\u0628\u0644 IEC 60534-2-1 \u0644\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u064a \u0644\u0627 \u064a\u0643\u0648\u0646 \u0641\u064a\u0647\u0627 \u062a\u062d\u062c\u064a\u0645 \u0648\u0631\u0642\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0643\u0627\u0641\u064a\u0627\u064b.<\/p>\n\n\n\n<p><strong>\u0623\u062e\u0628\u0631\u0646\u0627 \u0628\u0638\u0631\u0648\u0641 \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0643 - \u0627\u0644\u0633\u0627\u0626\u0644\u060c \u0648P\u2081\u060c \u0648P\u2082\u060c \u0648\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0648\u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 - \u0648\u0633\u0646\u0648\u0635\u064a \u0628\u062a\u0643\u0648\u064a\u0646 \u0628\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0642\u0637\u0639 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0648\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0648\u0627\u062f \u0644\u0645\u0647\u0645\u062a\u0643.<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/cartervalves.com\/ar\/contact\/\">\u0637\u0644\u0628 \u0627\u0633\u062a\u0634\u0627\u0631\u0629 \u0641\u0646\u064a\u0629 \u2192<\/a><\/p>\n\n\n\n<p>\u0627\u0633\u062a\u0643\u0634\u0641 <a href=\"https:\/\/cartervalves.com\/ar\/product-categories\/control-valves\/\">\u0646\u0637\u0627\u0642 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645<\/a> \u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u062e\u062f\u0645\u0629 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0648\u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0627\u0644\u0634\u062f\u064a\u062f\u0629.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/h2>\n\n\n\n<p>1. \u062a\u0648\u0631\u064a\u062a\u0634\u064a\u0644\u064a\u060c \u0625. (1643) - \u0627\u0644\u0648\u0635\u0641 \u0627\u0644\u0623\u0635\u0644\u064a \u0644\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0641\u064a \u062a\u062f\u0641\u0642 \u0627\u0644\u0641\u062a\u062d\u0629. \u062a\u0645 \u0627\u0644\u0627\u0633\u062a\u0634\u0647\u0627\u062f \u0628\u0647 \u0641\u064a: \u0648\u064a\u0643\u064a\u0628\u064a\u062f\u064a\u0627, <em>\u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f<\/em> \u2014 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Vena_contracta\" target=\"_blank\" rel=\"noopener\">https:\/\/en.wikipedia.org\/wiki\/Vena_contracta<\/a> 2. IEC 60534-2-1 - <em>\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 - \u0633\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 - \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u062a\u062d\u062c\u064a\u0645 \u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0641\u064a \u0638\u0644 \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u0631\u0643\u0628\u0629<\/em> - \u0627\u0644\u0644\u062c\u0646\u0629 \u0627\u0644\u0643\u0647\u0631\u0648\u062a\u0642\u0646\u064a\u0629 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 3. ISA-75.01.01.01 - <em>\u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0627\u0644\u062a\u062f\u0641\u0642 \u0644\u062a\u062d\u062f\u064a\u062f \u062d\u062c\u0645 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645<\/em> - \u0627\u0644\u062c\u0645\u0639\u064a\u0629 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0644\u0644\u0623\u062a\u0645\u062a\u0629 4. \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0623\u0631\u062f\u0646\u064a\u0629 - <em>\u0634\u0631\u062d \u0639\u0627\u0645\u0644 \u0627\u0633\u062a\u0631\u062f\u0627\u062f \u0627\u0644\u0636\u063a\u0637<\/em> \u2014 <a href=\"https:\/\/www.jordanvalve.com\/resource\/pressure-recovery-factor-explained\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.jordanvalve.com\/resource\/pressure-recovery-factor-explained\/<\/a> 5. \u0634\u0631\u0643\u0629 \u0641\u0627\u0644\u064a\u0646 - <em>\u0627\u0644\u0636\u063a\u0637 \u0641\u064a \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f \u0645\u0639 \u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0627\u0626\u0644 \u0641\u064a \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645<\/em> \u2014 <a href=\"https:\/\/www.valin.com\/resources\/whitepapers\/pressure-vena-contracta-liquid-flow-control-valve\" target=\"_blank\" rel=\"noopener\">https:\/\/www.valin.com\/resources\/whitepapers\/pressure-vena-contracta-liquid-flow-control-valve<\/a> 6. \u0634\u0631\u0643\u0629 \u0641\u0627\u0644\u064a\u0646 \u0643\u0648\u0631\u0628\u0648\u0631\u064a\u0634\u0646 - <em>\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0627\u0626\u0644 \u0628\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645: \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642\u060c \u0627\u0644\u062a\u062c\u0648\u064a\u0641\u060c \u0627\u0644\u0648\u0645\u064a\u0636<\/em> \u2014 <a href=\"https:\/\/www.valin.com\/resources\/blog\/control-valve-liquid-flow-choked-flow-cavitation-flashing\" target=\"_blank\" rel=\"noopener\">https:\/\/www.valin.com\/resources\/blog\/control-valve-liquid-flow-choked-flow-cavitation-flashing<\/a> 7. \u0625\u064a\u0645\u0631\u0633\u0648\u0646 \/ \u0641\u064a\u0634\u0631 - <em>\u0641\u0647\u0645 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642 \u0641\u064a \u0635\u0645\u0627\u0645\u0627\u062a \u0641\u064a\u0634\u0631<\/em> (\u0646\u0634\u0631\u0629 \u0627\u0644\u0645\u0646\u062a\u062c) - <a href=\"https:\/\/www.emerson.com\/documents\/automation\/product-bulletin-understanding-choked-flow-in-fisher-valves-en-122950.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/www.emerson.com\/documents\/automation\/product-bulletin-understanding-choked-flow-in-fisher-valves-en-122950.pdf<\/a> 8. Alicat Scientific - <em>\u062a\u062c\u0646\u0628 \u0627\u0644\u0646\u0641\u062b \u0641\u064a \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0634\u0627\u0645\u0644: \u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f<\/em> \u2014 <a href=\"https:\/\/www.alicat.com\/support\/choosing-an-instrument-avoiding-jetting-in-mass-flow-controllers-the-vena-contracta\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.alicat.com\/support\/choosing-an-instrument-avoiding-jetting-in-mass-flow-controllers-the-vena-contracta\/<\/a> 9. \u0635\u0645\u0627\u0645 \u0648\u064a\u0644\u064a\u0627\u0645\u0632 - <em>\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u062a\u062c\u0648\u064a\u0641: \u0643\u064a\u0641 \u064a\u062f\u0645\u0631 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u062e\u062a\u0646\u0642 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0644\u0644\u0635\u0645\u0627\u0645\u0627\u062a<\/em> \u2014 <a href=\"https:\/\/www.williamsvalve.com\/blog\/cost-of-cavitation-how-choked-flow-destroys-valve-internals\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.williamsvalve.com\/blog\/cost-of-cavitation-how-choked-flow-destroys-valve-internals\/<\/a> 10. \u0645\u0635\u0645\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 - <em>\u0627\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062a\u0639\u0627\u0642\u062f<\/em> \u2014 <a href=\"https:\/\/www.piping-designer.com\/index.php\/properties\/fluid-mechanics\/2529-vena-contracta\" target=\"_blank\" rel=\"noopener\">https:\/\/www.piping-designer.com\/index.php\/properties\/fluid-mechanics\/2529-vena-contracta<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>The Pressure Drop You Calculated Is Not the Pressure That Damages Your Valve When engineers size a control valve for liquid service, they typically focus on the pressure drop between inlet and outlet \u2014 P\u2081 minus P\u2082. That number drives the Cv calculation, it goes into the data sheet, and it looks right on paper. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1290,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/posts\/1291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/comments?post=1291"}],"version-history":[{"count":1,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/posts\/1291\/revisions"}],"predecessor-version":[{"id":1295,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/posts\/1291\/revisions\/1295"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/media\/1290"}],"wp:attachment":[{"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/media?parent=1291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/categories?post=1291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cartervalves.com\/ar\/wp-json\/wp\/v2\/tags?post=1291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}