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Large Bore Parallel Slide Valves

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Large Bore Parallel Slide Valves

Extra Information

The core ranges are class:
1000, 1690, 2850



The HH range of pressure seal parallel slide gate valves are designed to ASME B16.34 1000, 1690, 2850 class (interpolated ratings). 

The valve range is a true pressure seal design and has seats, discs and backseat hard faced with stellite 6 & stellite 12 and butt weld ends to ASME B 16.5 standard schedules.

The larger bore range of cast steel high pressure parallel slide valves are:-

    ASME class 1000, size range, from 5" NPS to 24" NPS
    ASME class 1690, size range from 5" NPS to 24" NPS
    ASME class 2850, size range, from 5" NPS to 24" NPS

Valves are supplied to ASME B16.25 BWE schedules or customer requirements. Materials are ASTM A216 Gr. WCB and ASTM A217 Gr. WC6, WC9 & C12A.

All of the above are available as forgings if required.

The range can be fitted with locking systems, by-pass and equalising devices. bevell gearbox and electrical or pneumatic actuated operation.

Specification Details

    ASME B16.34 compliant
    Flanged or butt-weld ends
    Hardfaced seats, discs and backseat as standard
    Open / close indication as standard
    Castings to ASTM E446 level 3
    Available in a wide range of materials and trim options
    Available in pressure classes 1000 - 2850
    Pressure sealed bonnet across full range
    Cast/Forged body up to 24" size

Optional Features

    Option for actuator (pneumatic, electric)
    Bevel gear where non standard
    Extension shafts for remote operation
    By-pass and drain connections
    VEE Port seat for flow control