Non-Rising Stem (NRS) means outside stem, also referred to as the rotary stem gate valve or blind stem wedge gate valve. In an NRS valve, the stem will turn to open and close the gate, but the stem does not move up or down as it turns. As the stem turns, it moves into or out of the valve, which also moves the gate to open or seal the valve. The non-rising stem valve features flange designed and widely used in hot and cold water, HVAC, steam, gas and other general utility services.

PERFECT is a fully stocked manufacturer and supplier of gate valve and we make the valve easy to find for your need. We provide a complete line of flanged non-rising stem gate valve for sale that is supplied to various industries, solid wedge and bolted bonnet are available for your choice size from 2″ to 16″. 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.

  • Compact structure and reasonable design offer a wide range of application.
  • Non-rising stem valves take up less space, ideal for gate valve with limited space.
  • The flat face end connection for easy installation and accessibility.
  • Non rising stem offers positive upstream and downstream seal.

Flanged Non-Rising stem gate valves design

Application   Flow connecting or cutting off
Design Standard
  • API 6D
  • ASME B16.34
F to F Standard ASME B16.10
Testing Standard API 598
End Connection Standard ASME B16.5
Size NPS 1/2 to 2

DN 15 to 50

Pressure Class Range
  • 600 to 1500
  • PN 110 to 260
Ends Flange End, 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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