Pressure Seal Check Valve Manufacturer and Supplier in USA & Canada — SVR Global
SVR Global is a trusted Pressure Seal Check Valve Manufacturer and Supplier in USA and Canada, offering reliable backflow prevention solutions for high-pressure and high-temperature applications. Designed with a pressure seal bonnet, our valves ensure leak-free performance under extreme operating conditions, making them ideal for power generation, petrochemical, refinery, and steam service industries.
Function & Working
A pressure seal check valve allows flow in one direction and automatically prevents reverse flow. The valve disc opens with forward flow and closes under backflow, ensuring protection of pumps, compressors, and pipelines. Unlike conventional bolted bonnet designs, the pressure seal bonnet uses internal pressure to create a tighter seal at the body-bonnet joint. This makes the valve lighter, more compact, and more reliable for Class 600 and above services, while minimizing the risk of leakage at elevated temperatures and pressures.
Advantages of SVR Global Pressure Seal Check Valves
Designed for high-pressure, high-temperature services
Pressure seal bonnet provides superior sealing as pressure increases
Prevents backflow and protects critical equipment
Compact and lightweight compared to bolted bonnet check valves
Long service life with rugged construction
Low maintenance due to fewer bolting requirements
Compliant with international valve standards
Technical Specifications
Size Range: 2″ – 24″ (DN50 – DN600)
Pressure Class: ASME Class 600 – 2500 / PN100 – PN420
Temperature Range: −29 °C to +600 °C depending on body and trim materials
Body Materials: WCB, WC6, WC9, C12A, Stainless Steel (SS304, SS316, SS321, SS347), Alloy Steel, Inconel
Trim Options: Stainless Steel, Alloy Steel, Stellite hard-faced disc and seat for wear resistance
Design Types: Swing check, tilting disc, and dual plate configurations available in pressure seal design
End Connections: Flanged RF/RTJ, Butt Weld (BW)
Standards: API 6D, API 598, ASME B16.34, BS, DIN, MSS SP
Industries Served
Power generation (boiler feedwater, steam pipelines, turbine systems)
Oil and gas refining and transmission
Petrochemical and chemical plants
Fertilizer and process industries
Marine and offshore applications
High-pressure steam and utility services
