Astic International Corp.

Manufacturer of All Kinds of Valves- Ball Valve, Check Valve, Butterfly Valve, Gate Valve, etc.


Swing Check Valve


  • Model No: n/a
  • Factory Location: Taiwan
  • Sample Request: No
  • Target Markets: Worldwide

Detail Information

Description :

1. Product: Cast Steel, Stainless Steel Swing Check Valve
2. Standards
* Design and manufacture: Cast steel swing check valve to BS868 and AAP 6D.
* End flange dimension: ASME B16.5 ( for NPS ≤ 24) : ASME B16.47 series B、API 605 or ASME B16.47 series A、MSS SP-44 ( for NPS>24).
* Face to face and end to end: ASME B16.10.
* BW end dimension: ASME B16.25.
* Inspection and Test: API 598, API 6D.
* Pressure-temperature ratings: ASME B16.34.
3. The features of Check Valve: Bolted cover; Swing type disc; Metallic seating surfaces.
4. Body and Bonnet Connection: The body and bonnet of Class 150~Class 900 swing check valves are usually connected with studs and nuts. And the body and bonnet of Class 1500~Class 2500 check valves are usually of pressurized seal design.
5. Seat: For carbon steel check valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS≤ 10 check valves, and welded on seat can be also optional if being requested by the customer. Welded in seat is used for NPS ≤ 10 carbon steel check valve. For stainless steel check valve, integral seat is usually adopted, or to weld hard directly integrally. Threaded or welded on seat is also optional for stainless steel globe valve if being requested by the customer.
6. Body and Bonnet Joint: Stainless steel + flexible graphite wounded gasket is used for Class 150, Class 300 and Class 600 check valve, and joint gasket is also optional for Class 600 check valve; Ring Joint gasket is used for Class 900 check valve; Pressurized seal design is used for Class 1500~2500 check valve.

Specification :

Parts No.Part NameMaterial
WCB / Trim 1WCB / Trim 8WCB / Trim 5CF8 / Trim 2CF8M / Trim 10
1BodyA216 WCBA351 CF8A351 CF8M
2Seat RingA105+13CrA105+STLA105+STLA351 CF8A351 CF8M
3DiscA216 WCB+13CrA216 WCB+13CrA216 WCB+STLA351 CF8A351 CF8M
4ArmA216 WCBA351 CF8A351 CF8M
5NutA194 2HA194 8A194 8M
6Arm PinA182 F6aA351 CF8A351 CF8M
7YokeA216 WCBA351 CF8A351 CF8M
8Bonnet NutA194 2HA194 8A194 8M
9Bonnet BoltA193 B7A193 B8A193 B8M
10BoltA193 B7A193 B8A193 B8M
11GasketAA304 Sheet+GraphiteSS304+GraphiteSS316+Graphite
12BonnetA216 WCBA351 CF8A351 CF8M
13Eye BoltA181

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Astic International Corp.

  • Taiwan