Description

BB, lift type, renewable seat rings, horizontal service, flanged or BW ends.

Standards compliance

• Design and Manufacture: Cast steel check valve to BS 1868,

• ASME B16.34 and API 6D;

• Forged steel check valve 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.

• Socket-weld dimension: ASME B16.11.

• Face to face and end to end: ASME B16.10.

• Pressure-temperature ratings: ASME B16.34.

• Wall thickness dimension: API 600 and BS 1868.

The features of check valve

• Bolted Bonnet; Swing and lift disc; Metallic seating surfaces.

Flanged ends piston-lift type, check valve, products design features

. Flanged ends piston -lift type check valve are used in pipes under nominal pressures between, Class 150 ~900 working temperatures between -46~550. They are used in industries include oil, chemistry, pharma-ceutical. fertilizer, and power generation to prevent the backward flux of the media. Main structural features:

. 1 Rational structure, reliable sealing, excellent performance, pretty appearance.

2.Co hard alloy welded sealing surface of the valve discs and seats, which is wearing, erosion proof, abrasion proof andlong-lived.

. 3. Different parts materials and different sizes for flange & gasket-welding are available for sensible combination according to different working facts and customer’s requirements.