Univalve® Piston Check Valve

A small bore, forged body piston check valve with a body-guided disc. Available in class 1690, 2680 and 4500 from sizes 1/2 to 4.

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  • Brands:
  • Applications:
    Hydrocarbon Processing, Hydrocracking, Petroleum Production and Refining, Power Generation, Safety Systems, Shutdown Cooling, High Temperature Service, Condensate, Condensate Cooling Water, Geothermal, Heat Recovery Steam Generators, High Pressure Safety Injection, Utility
  • Industries:
    Boiling Water Reactors Non-safety, Boiler Feedwater Systems, Condensate Systems, Cooling Systems, Heavy Oil and Upgrading, Nuclear Power, OEM, Power Generation, Pressurized Water Reactors - Non-safety, Pressurized Water Reactors - Safety, SAGD, Steam Systems, Boiler Circulation Systems, Boiler Feed, Boiling Water Reactors Safety
  • Standards:
    ASME (ANSI), ISO 9001:2000, Nuclear, ISO
  • Misc:
    High Temp, High Pressure

The Flowserve Edward Univalve® Piston Check Valve is small bore with a forged body and a body guided disc. This valve comes equipped with certain aspects and features that allow it to be proficient every time you use it. These features include:

  • Minimized flow direction changes and reduced pressure drop due to an inclined stem construction with an optimum flow shape
  • Eliminated misalignment, galling and stem bending by the use of anti-thrust rings in the body guided disc
  • Positive shutoff and seat life provided by an integral hardsurfaced seat
  • Ease of disassembly due to ACME threads being in the threaded bonnet
  • Unwelded models use a graphitic gasket for dependable sealing. Welded models employ a fillet weld (canopy weld on stainless steel valves) for absolute protection from body-bonnet leakage.
  • Reliable seal provided by a die formed, flexible graphite gasket seated to a prescribed bonnet torque

Available in class 1690, 2680 and 4500 in sizes 1/2 to 4 inches.  

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Edward Univalve User Instructions (IOM)

Select format:
8.5 x 11

Edward Univalve User Instructions: Operation and Maintenance Manual (IOM)

Edward Valves: Check and Stop-Check Valves for High Turndown Applications White Paper

This paper is an extension of the Edward guidelines to address high turndown applications in detail. Edward Valves Check and Stop-Check Valves

Edward Forged Steel Valves Product Catalog

Comprehensive Product Catalog for the entire Flowserve brand of Edward Forged Steel Valves for commercial applications including Bolted Bonnet Stop Valves.

Flowserve Edward and Anchor/Darling Nuclear Application Valves Product Catalog

Comprehensive Product Catalog for the Flowserve brands of Edward and Anchor/Darling Nuclear Application Valves.

Series 1878 Piston Check Valve

Description: The 1878 Piston Check valve features a contoured flow path for maximum Cv, quick disassembly and a smooth, investment cast body.

Edward Bolted Cover Piston Check Valve

Description: A small bore, forged valve with a bolted cover for easy maintenance. Available in class 800 and 1500 from sizes 1/2 to 2 inches.

Series 800 Piston Check

Description: The 800 Series Piston Check valve feratures positive, low pressure sealing, an optional resilient seat for LLRT applications and a contoured flow path for maximum Cv.

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