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Low pressure Parallel Slide Valves

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Low pressure Parallel Slide Valves

Extra Information

The core ranges are class:
150, 300, 600



The HH range of low pressure bolted bonnet parallel slide gate valves are designed to ASME B16.34 for service on combined heat and power plants and chemical recovery boilers as well as oil, gas and coal fired conventional power generating plants. These products are also available in ASTM A217 WC6 and WC9 materials, and in low-temperature, carbon-alloy and stainless steel materials. Valve seats, discs, and backseat are hard faced with stellite as standard and gearbox and actuation, by pass, equalizing and drain connections can be fitted as required The small bore range of forged steel parallel slide gate valves for use as drain valves, by-pass valves and equalising devices are supplied in materials A105 and F22 

ASME class 800 sizes range from ½" NB through to 2" NB. 
The larger bore range of cast steel low pressure parallel slide valves for:-

·         ASME class 150, size range, from 2"NB to 36"NB
·         ASME class 300, size range from 2"NB to 24"NB
·         ASME class 600, size range, from 2"NB to 24"NB
·         Valves can be supplied in flanged or BWE design

Materials ASTM A216 Gr. WCB and ASTM A217 Gr. WC6 & WC9
Valves can be fitted with by-pass and equalising devices.and can be hand wheel, gearbox and electrical or pneumatic actuated operation

Specification Details

ASME B16.34, BS EN 1984 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 150 - 600

Optional Features

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