Description
1. Overview of Forged Steel Check Valve
VTON forged steel check valves are designed with three types of valve covers to suit various operational needs:
- Bolted Cover: The valve body and cover are connected with bolts and nuts, sealed with a spiral wound gasket (316 flexible graphite). Metal ring connections are available upon request.
- Welded Cover: The valve body and cover are threaded and fully welded for sealing. Penetration welding is optional.
- Pressure Self-Tightening Cover: The valve body and cover are threaded and sealed with internal pressure self-sealing rings.
Additionally, the valves are available in three structural types: lift check, ball check, and swing check valves, providing flexibility for different applications.
2. Technical Parameters
- Design Standards: MSSP-118, ASME B16.34
- Inspection and Testing: API 598
- Marking: MSS-SP-25
- Cover Types:
- Bolted cover with spiral wound gasket sealing
- Threaded cover with fully welded sealing
- Threaded cover with pressure self-sealing rings
- Size Range: DN10-DN50 (1/4″ to 2″)
- Pressure Rating: 6.4MPa ~ 32MPa (150LB ~ 2500LB)
- Working Media: Water, oil, compressed natural gas, nitrogen, oxygen, hydrogen, and other gases
3. Material Specifications
- Body: A105, A182F22, A182F304(L), A182F316(L)
- Disc: A276420, A276304, A276304(L), A276316(L)
- Seal Nut: 316 with flexible graphite
- Seal Ring: A105, A182F22, A182F304(L), A193 B8(M)
- Fixed Nut: Stainless steel
- Lifting Bolt: A193B7, A193B16, A193B8(M)
