Product
Forged Steel Check Valve
Forged steel check valve is designed to prevent reverse flow in high-pressure industrial pipeline systems. With excellent pressure resistance, reliable sealing performance, and durable construction, they are widely used in oil and gas, petrochemical, chemical processing, and power generation applications.
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:
- Design and manufacture according to API standards, reliable sealing, excellent performance.
- 600Lb above gate and seat overlaiedwith sellite, wear resistance, high temperature resistance, corrosion resistance,
- The valve stem is tempered and surface nitrided, and has good corrosion resistance and scratch resistance.
- It adopts wedge elastic gate structure, and sets rolling bearings with medium and large diameter, which is easy to open and close.
- 1500LB, 2500LB middle cavity adopts pressure self-tightening sealing structure
- 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