Description

BB, Swing type, anti-rotation disc, renewable seat rings, non-penetrate disc shaft, horizontal or vertical 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&butt-welding ends swing check valves projets design features.

• Flanged & Butt-Welding Ends Swing Check Valves are used in pipes under pressures between, Class 150 ~900Lb, working temperatures between -29-570°C, They are used in industries include oil, chemistry, pharmaceutical, 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-radix alloy welded sealing surface, anti-wearing, erosion-proof abrasion-proof and longer use life.

• 3.Inside-set bolt-bearing structure reduces leakage and reliable use

• 4. Under pressures 16.0Mpa, Class1500, the valve belly, self-tightening structure offers atighter offers a tighter sealing for a higher medium pres-sure.

• 5. Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers’ requirements.