Walworth® 5640S-UT Forged Carbon Steel Standard Port Swing Check Valve, Threaded, Class 800, -20 to 800 deg F

Forged Steel Valves
390776P
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Walworth® 5640S-UT Forged Carbon Steel Standard Port Swing Check Valve, Threaded, Class 800, -20 to 800 deg F
  • Body Material: Forged Carbon Steel
  • Manufacturer: Walworth®
  • Connection Type: Threaded
  • Item Name: Check Valve
  • Material Standard: ASTM A105, ASTM A276
  • Pressure Class: Class 800
  • Seal Material: 304 Stainless Steel/Flexible Graphite
  • Seat Material: 410 Stainless Steel
  • Series/Model: Series 5640S
  • Temperature Rating: -20 to 800 deg F
  • Trim Material: 420 Stainless Steel Disc
  • Type: Standard Port, Swing

Swing check valves are generally used to protect pumps or similar equipment whilst allowing the passage of flow in only one direction and preventing the return of it due to backpressure. Swing check valves are designed to produce a low pressure drop on the line. The design provides a tight seal and a quick reaction to the close.

NOMINAL SIZE
  • Features
  • Low fugitive emissions control
  • Body cover union has an adequate design to apply an even load in the gasket so that it can offer a leak proof seal
  • Fork and disc allow an independent movement which achieves a correct close between the disc and the seat
  • Designed to produce a low pressure drop on the line
  • Horizontal or vertical fluid control
  • Stellite seat ring provides increased resistance to wear abrasion and erosion of the sealing surface
  • Connection is secured by a welded disc nut to prevent disassembly due to vibration and closure impact
  • Spiral wound gasket
  • Bolted cover connection
  • Standards/Approvals: API 598, API 602, ASME B16.34, NACE MR0175, NACE MR0103