Direct-Acting Pressure Reducing Valve

CDR-PR40

Direct-Acting Pressure Reducing Valve

An energy-saving, reliable automatic pressure control solution that requires no external power.

Steam Systems
Water Distribution

Compressed Air
Equipment Protection

CDR-PR40

Why Choose the CDR-PR40?

Ultimate Reliability: A simple, robust mechanical design requires no external energy, ensuring stable operation under all conditions and giving you peace of mind.
Rapid Response: Reacts quickly to changes in flow or inlet pressure, automatically maintaining a stable outlet pressure to protect downstream equipment.
Economical & Practical: Eliminates the need for a power supply and complex control systems, reducing initial installation costs, while its simple maintenance leads to lower long-term operating costs.

Material	EN-JL1040 (Cast Iron) EN-JS1049 (Ductile Iron) 1.0619+N (Carbon Steel)
Temperature	-10°C to 300°C (14°F to 572°F) for EN-JL1040 material -10°C to 350°C (14°F to 662°F) for EN-JS1049 material -60°C to 450°C (-76°F to 842°F) for 1.0619+N material
Pressure	PN 16 / Class 150 (16 bar / 150 PSI) PN 25 / Class 300 (25 bar / 300 PSI) PN 40 / Class 300 (40 bar / 300 PSI)
Connection	Flange
NPS	1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″, 4″, 5″, 6″
DN	15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150
Medium	Steam, neutral gases, vapours and liquids, etc.

Key Features
- Self-Acting Mechanical Operation
  Operates without external power supply, using a direct-acting spring and diaphragm mechanism for fully automatic pressure regulation.
- Stable Outlet Pressure Control
  Automatically maintains a constant downstream pressure despite fluctuations in inlet pressure or flow demand.
- Fast Dynamic Response
  Reacts immediately to system pressure changes, protecting downstream equipment from pressure surges and instability.
- Energy-Saving Design
  Eliminates the need for electrical or pneumatic control systems, reducing energy consumption and system complexity.
- Simple & Robust Construction
  Durable mechanical structure ensures long service life, high reliability, and minimal maintenance requirements.
- Lower Installation Cost
  No auxiliary power, control cabinet, or actuator required, significantly reducing initial investment and commissioning time.
- Wide Material Options
  Available in cast iron (EN-JL1040), ductile iron (EN-JS1049), and carbon steel (1.0619+N) for various operating environments.
- Broad Pressure Range
  Suitable for PN 16 / Class 150, PN 25 / Class 300, and PN 40 / Class 300 applications.
- Flexible Size Range
  Sizes from 1/2″ to 6″ (DN 15–150) to meet diverse industrial piping requirements.
- Versatile Media Compatibility
  Designed for steam systems, neutral gases, vapors, liquids, compressed air, and water distribution networks.
- Ideal for Utility & Process Systems
  Commonly used in steam distribution, compressed air systems, water networks, and general equipment protection applications.