Ring Disc


The NK employs the worldwide proven ring shaped valve disc / radial guide design. With a short face-to-face and reduced weight the compact NK is a lower cost solution to its sister valve, the NB, when marginally higher pressure drops can be accepted. This highly efficient design combined with the highly responsive non-slam operation make this valve ideally suited to demanding check valve applications.



  • Non-slam closure
  • Low pressure loss
  • Friction-free valve disc guiding
  • Metal sealing
  • Low weight
  • Short face-to-face length
  • Maintenance free

Valve design to ANSI B16.34

Size range:

12" - 144" (DN 300 - DN 3600)

Pressure Class:

ANSI 150# - ANSI 2500#,
API 2000 - API 10000

End Connections:

  • Flanged
  • Buttweld
  • Hub End
  • Compact Flange

Type NK Compact - Manufacturers standard face-to-face dimensions
(standard valve for sizes - 12" and above)

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