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Swing check valve

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Swing check valve

Swing valve is a butterfly-style check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle.Although swing check valves can come in various sizes, large check valves are often swing check valves.
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Features and benefits

Body and cover: Precision machined castings.
Exclusive: Disc shaft does not penetrate body.

Body and cover joint: Accurately machined, fully-enclosed gasket.

Disc: Robust one-piece construction to withstand the severe shock of check valve service.

Hardfaced with 13Cr, CoCr alloy, SS 316, or Monel, ground and lapped to a mirror finish.

Sizes NPS 2–6 (DN 50–150) may have solid CA 15 (13Cr) disc. SS 316 disc with CoCr alloy facing also available.
Disc assembly: Non-rotating disc is fastened securely to disc hanger with a lock nut and cotter pin.
Disc hanger is supported on a sturdy disc carrier hinge pin of excellent bearing qualities.
All parts are accessible from top for easy servicing.
ASME Classes 150–300: 1⁄16” raised face.
ASME Classes 600–1500: 1⁄4” raised face.
Finish 125–250 AARH for all valves.

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