API Swing Check Valve Cast Steel 300LB Fully Open Metal Seal Hardfaced

Api Swing Check Valve Cast Steel 300LB Fully Open Metal Seal Hardfaced NRV H44H

Quick Details:

1. Type: Api Swing Check Valve
2. Bolted Bonnet, Swing Type Disc,
3. Size Range: 2" to 36".
4. Pressure Ratings: ANSI 300LB / 300#
5. End Connections: Flanged (RF, RTJ), Butt welding (BW).
6. Materials: Cast Steel in WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, 5A or Equivalent,

7. Various trim materials available to suit service conditions
8. NACE MR 0175

Standards

Design and manufacture: Cast steel check valve according to BS 1868, ASME B16.34 and API 6D;
Forged stee! check valve according to API 602.

Inspection and test: API 598 or API 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).

BW end dimension: ASME B16.25.

Face to face and end to end: ASME

Pressure-temperature ratings: ASME B16.34.

Shell wall thickness: API 600 and BS 1868.

Features

1. Generally

Bolted Bonnet;

Swing Disc;

Metallic Seating Surfaces

2. Body and Bonnet Connection

Class300 check valves are usually bolted bonnet.

3. Cover Gasket Style

Stainless steel + flexible graphite wounded gasket is used for Class300.

4. Seat

For carbon steel check valve, the seat is usually forged steel. The seat sealing surface may be spray-welded with hard alloy if specified by the customer. For Stainless steel check valve, integrai seat is usually adopted, or it can be machined integrally after hard alloy welded. The threaded or welded type seat is also optional for stain less steel check valve if being requested by the customer.

Descriptions:

1. Swing Check Valve Parts and Material List:

2. Main Connection Dimensions for Class 300LB: