Bimetallic Steam Trap for High Pressure Service

CST-710

Bimetallic Steam Trap

An extremely robust thermostatic steam trap that operates on the sub-cooling principle of condensate, immune to water hammer and freezing.

Steam Mains
Tracer Lines
Outdoor Environments
Superheated Steam

CST-710

Why Choose the CST-710?

Extremely Durable: With only bimetallic plates acting as the sensing and actuating element, its simple and robust design significantly extends service life and reduces maintenance costs.
Resists Harsh Environments: Its normally open design prevents damage from freezing and is insensitive to water hammer, ensuring reliable operation even under severe conditions.
Energy Efficient: Allows condensate to cool down to a certain degree (sub-cooling) before discharge, fully utilizing the sensible heat of the condensate and improving system energy efficiency.

Material	EN-JL1040 (Gray Cast Iron) 1.0460 (Carbon Steel P235GH) 1.4541 (Stainless Steel 321 / Ti-stabilized) 1.5415 (Alloy Steel 15Mo3)
Temperature	-10°C to 300°C (-14°F to 572°F) for EN-JL1040 models -60°C to 450°C (-76°F to 842°F) for 1.0460 models -60°C to 400°C (-76°F to 752°F) for 1.4541 models -10°C to 450°C (-14°F to 842°F) for 1.5415 models
Pressure	PN 16 / Class 150 (16 bar / 232 PSI) PN 40 / Class 600 (40 bar / 580 PSI)
Connection	Flange Screwed socket (Rp / BSP threaded) Socket end Butt weld end Union with butt weld end
DN	DN 15, DN 20, DN 25, DN 40, DN 50
Medium	Steam, condensate, etc.

Key Features

Thermostatic Sub-Cooling Operation
Operates on the sub-cooling principle, allowing condensate to cool below saturation temperature before discharge, maximizing sensible heat utilization and improving overall steam system efficiency.
Extremely Robust Construction
Uses stacked bimetallic plates as the sensing and actuating element. The simplified mechanical design minimizes moving parts, extending service life and reducing maintenance frequency.
Water Hammer & Freeze Resistant
Normally-open design prevents damage during start-up and shutdown. Highly resistant to water hammer and freezing conditions, making it ideal for outdoor and exposed installations.
Suitable for Superheated Steam
Withstands high-temperature steam applications, including superheated steam lines and tracer systems.
Energy-Saving Performance
By delaying discharge until condensate sub-cools, the trap reduces flash steam losses and improves thermal system efficiency.