Product

Forged Steel Check Valve

Specification

Size: NPS 1/2″ ~ NPS2″
Pressure: 150LB~2500LB
Connection: RF, SW, BW, RTJ
Temperature: -29°C ~ 550°C
Main material: carbon steel, stainless steel, alloy steel
Medium: water, steam oil, nitric acid, acetic acid, etc
Applications: Suitable for tap water, food, pharmaceutical, electric petroleum, liquefied gas, steam, and other media pipelines

Main Parts Material:

Part

A105N

 F22

 F304(L)

 F316(L)

Body

A105N

A182 F22

A182 F304(L)

A182 F316(L)

Disc

A276 420

A276 F22

A276 304(L)

A276 F316(L)

Stem

A182 F6a

A182

A182 F304(L)

A182 F316(L)

Gasket

316+Flexible graphite

316+PTFE

Bonnet

A105N

A182 F22

A182/F304(L)

A182/F316(L)

Features:

  1. Design and manufacture according to API standards, reliable sealing, excellent performance.
  2. 600Lb above gate and seat overlaiedwith sellite, wear resistance, high temperature resistance, corrosion resistance,
  3. The valve stem is tempered and surface nitrided, and has good corrosion resistance and scratch resistance.
  4. It adopts wedge elastic gate structure, and sets rolling bearings with medium and large diameter, which is easy to open and close.
  5. 1500LB, 2500LB middle cavity adopts pressure self-tightening sealing structure
  6. The inverted seal is made of stainless steel threaded connection sealing seat or body overlay welding austenitic stainless steel, the seal is tight, and the packing replacement and maintenance can be carried out without stopping, which is convenient and fast and does not affect the operation of the system