COVS060弹簧压力阀

Product Description
The valve, made from valve body, actuator and one pressure-preset spring, applies internal pressurizing structure, automatically adjusts and stabilizes the pressure by using the pressure change of medium itself. It is applicable for steam, weak corrosive gas or low-viscosity liquid, acting the upstream pressure control in the pipeline, when the upstream pressure rises up, the valve is opening excess the pressure.
 
Parameters
Size: 1/2"~16"（DN15~DN400）
Pressure Rating: ASME CLASS 150~300 (PN16~PN40)
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel
Temperature Range:-5℃~230℃
Seat Leakage：ANSI IV or ANSI Ⅵ(bubble-tight)

Special features:

• Single-acting linear actuator with rolling diaphragm and internal springs
• Diaphragm areas from 120 to 2x2800 cm²
• Low overall height
• Powerful thrust at high stroking speed
• Low friction
• Various bench ranges by varying the number of springs or their compression
• No special tools required to change the bench range or reverse the direction of action (also version with handwheel)