Prod. # 8066, 1/2″ 316 SS BSS Style Light Spring Basic-Check® Threaded In-Line Check Valve

Description

The DFT® Basic-Check valve is a versatile all-purpose, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of liquids and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc. to form a complete check valve unit ideally suited for a broad range of pipeline applications or incorporated into machinery for OEM applications. The metal-to-metal sealing area of the Basic-Check valve’s disc and seat is precision lapped, providing very tight shut-off of both gas and liquid. If bubble-tight shut-off is required, resilient soft seats are available.

Light spring available: Cracking Pressure = 0.24 PSI (6.5 inches of water)

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    Materials of Construction
    Seat

    303 SS

    Disc

    316 SS

    Guard

    303 SS

    Spring

    316 SS

    Retaining Ring

    316 SS

    Soft Seat Materials
    Soft Seat Materials1

    Buna-N -49 (-70 to 250°F)
    EPDM -57 (-75 to 300°F)
    TFE®-Viton -98 (-40 to 400°F)
    Viton® -51 (-40 to 400°F)
    Zelon® -54 (37 to 400°F)

    1 Soft seats are not available for the Style BSE check Valve. Buna-N and Viton are not suitable for steam service.

    Springs
    Springs

    Inconel® X-750 (-460 to 700°F)
    316 SS (-460 to 450°F)

    Valve Selection Specifications
    ENDS

    NPT

    ASME

    2500 CWP

    2500 CWP

    303 SS

    Codes and Standards
    ANSI

    B1.20.1

    MSS

    SP-25

    Features
    • 1/4″ to 2 1/2″ Line size
    • 450 to 6000 CWP
    • Threaded ends
    • Stainless Steel Construction
    • Spring-assisted silent closing
    • Horizontal or vertical installation
    • Tight shut-off – lapped disc & seat
    • Easy Maintenance
    • Versatile
    Options
    • Inconel® 750 Spring
    • Soft seat
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