The pressure seal bonnet gate valve can be a type of parallel slide construction can be furnished for high differential pressure services or where thermal expansion may cause sticking of a wedge type. Elastic disc can automatically compensate valve body deformation due to abnormal load or temperature when working. The parallel sliding gate valve is mainly used in the main steam cut-off and isolation of thermal power units, main feed pump isolation, high-pressure heater isolation, steam turbine drainage system or used to control the effective cut-off or opening of high temperature& pressure steam water system.

We are a fully stocked manufacturer and supplier of gate valve and we provides a complete line of pressure seal bonnet gate valve for sale that is supplied to various industries. Available forms are flanged and bolted bonnet parallel slide gate valve. Our parallel slide gate valve is available from 150 up to 2500 pressure. We can also accept the OEM design, so whether you need special valves or have a large order to place, we can provide you with the customized service for you. Please review the charts below for available sizes & pressure & material or fill the contact form below.

  • The channel is smooth and straight, with a small flow resistance coefficient and no pressure loss when fully open;
  • The simple part design and material interchangeability has lower maintenance time and costs ;
  • The bonnet design allows easy access to valve internals while minimizing radiation exposure;
  • This exclusive disk and wedge design resist effects gross thermal transients, high and low differential pressures, and dual-phase fluids.

Parallel slide gate valve design

Application Non-Return Flow
Design Standard
  • API 6D
  • ASME B16.34
F to F Standard ASME B16.10
Testing Standard API 598
End Connection Standard ASME B16.5
  • NPS 2 1/2 to 24
  • DN 65 to 600
Pressure Class Range
  • 150 to 1500
  • PN 25 to 260
Ends Socket weld, Butt weld
  • Body: ASTM A216 Gr.WCB, ASTM A352 LCB, LCC, A217WC9, C5, A351 CF8M,CF3, CF3M,CN7M
  • Disc: 13% Cr, 18%Cr8%Ni, Stellite, Monel Alloy20, Bronze, etc
  • Seat: EPDM, Nitrile, PEEK, PTFE, etc

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