F51 – 5000PSI Check Valve

NSV F51 – 5000PSI Check Valve

This high-pressure check valve features an F51 duplex stainless steel body, rated for 5000PSI service. F51 (S31803/SAF 2205) is a duplex stainless steel with a two-phase microstructure of austenite and ferrite, offering excellent resistance to chloride stress corrosion cracking and pitting . The valve opens automatically under forward flow and closes rapidly when flow ceases or reverses, effectively preventing backflow and protecting downstream equipment.

Key Features

5000PSI Pressure Rating: Designed for high-pressure systems, compatible with Class 2500 and above applications.

F51 Duplex Stainless Steel Body: ASTM A182 F51 material provides superior mechanical strength and exceptional corrosion resistance, particularly in chloride-containing and sour service environments .

Swing or Wafer Design: Available in swing-type or wafer configurations; wafer design offers compact structure with short face-to-face dimensions .

Automatic Operation: Valve disc opens and closes solely by differential fluid pressure, requiring no external actuator.

Spring-Assisted (Optional): Some models feature spring-loaded discs for rapid closure, minimizing water hammer effects .

Wide Temperature Range: Suitable for service from -29°C to 280°C depending on seat and seal materials .

Typical Applications

Widely used in offshore oil and gas platforms, chemical processing, seawater desalination, pulp and paper mills, and high-pressure pipeline systems where both high strength and corrosion resistance are required . Particularly ideal for chloride-laden media such as seawater, brine, and sour gas services.

FAQ

1.Q:How can I visit your company?

A: We always welcome you to factory. However, your visit intention shall be pure. You can visit factory conveniently by noticing your visit to the department in charge depending on your visit purpose in advance. For the way to factory, please refer to map“About Us” of homepage.

2.Q: What’s the brand of your company can supply ?

A:NSV or OEM service.

3.Q:Does your company have any agent/distributor with the exception of China?

A: At present,we have agent in Indonesia,Singapore,Canada,Mexico,Iraq,and welcome contact us if you would like to join us.