Swing Type Check Valve

Welcome to wholesale or customized Swing Type Check Valve from our factory at any time. We will provide you with factory discount prices for our products. LYV® is Swing Type Check Valve manufacturers and suppliers in China. Swing Type Check Valve, also named Non return valve, is a kind of common check valves that used in water and wastewater application, which function is to prevent the medium in the pipeline from flow back or return. Usually, check valve is open/closed by the flow and force of the medium in case of the flowing back, that is the category of automatic valves, and mianly used in pipeline where the medium flows in one direction, and only allow to one direction; so the check valve should generally be installed horizontally in the pipeline.

They are cost-effective, are made of a wide range of materials, and have different designs for specific functionality.

Design & Testing International Standard:

Design Standard : BS1868, API 6D, ASME B 16.34

Inspection & Testing Standard : API 598

Flange To Flange Length : ANSI B 16.10

End Connection : Flanged End to ANSI B 16.5, Butt Weld ends, Stock Weld ends.

Manufacturer Size and Pressure Range:

NPS 2” to 36” (for ANSI Class 150LB)

NPS 2” to 36” (for ANSI Class 300LB)

NPS 2” to 24” (for ANSI Class 600LB)

NPS 2” to 24” (for ANSI Class 900LB)

NPS 2” to 20” (for ANSI Class 1500LB)

NPS 2” to 20(for ANSI Class 2500LB)

Bonnet/Cover type: Bolted Bonnet (BB) / Pressurized Seal Bonnet (PSB)

Gasket: Spiral Wound Gasket

Flow Directional: Uni-Directional

Service Medium: Natural Gas, Oil, Water, gas, etc

MOC (Bill of Material – BOM) :

Body &Bonnet: ASTM A 216 GR. WCB (Carbon steel)

: ASTM A352 LCB / LCC (Low temp. carbon steel)

: ASTM A217 WC1/ WC6/ WC9/ C5 (High temp. carbon steel)

: ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316) (Stainless Steel)

: ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L) (Stainless Steel)

: ASTM A351 Gr. CF8C

: ASTM A890 4A / 5A/ 6A (Duplex Stainless Steel)

Disc : ASTM A216 GR.WCB / ASTM A105N

: ASTM A352 LCB / LCC

: ASTM A217 WC1/ WC6/ WC9/ C5

: ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316)

: ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L)

: ASTM A351 Gr. CF8C

: ASTM A890 4A / 5A/ 6A

Gasket: SS Spiral Wound+ Graphite, or SS Spiral Wound + PTFE, or Reinforced PTFE

Gland Packing : Flexible Graphite /PTFE