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455 Double Port Dump/Control Valve

The INVALCO Series 455 Valve can be used in any low to moderate pressure application that requires discharge of large amounts of fluid quickly. This could be large treaters, separators, free water knockouts etc.


  • Ductile Iron Body - Meets most application needs
  • Soft Plug - Assures tight shutoff
  • Double Port Construction - Assures maximum discharge rates
  • Nace Adaptable - Can be modified for use in sour service



Body Material   Ductile Iron A-395   Maximum Working Pressure   175 psi @ -20 F to 150 F (-29 C to 66 C)
150 psi @ 250 F  (121 C)
Body Cover   Ductile Iron A-395   Temperature Limits   -20 F to 250 F (-29 C to 121 C)
End Connections   2”, 3”, 4” and 6” 150# Flanges   Stem Material   303 Stainless Steel  
Diaphragm Operator   Steel, See Chart for Topworks Size
Nylon Reinforced Buna N
Maximum Recommended Operating Pressure 70 psi
Maximum Containment Pressure 100 psi  
Seat Material   304 Stainless Steel Seat/Cage  
Packing  Non-Lubricated Buna N  Plug*  Replaceable Buna-N
*See Valve Trim section for optional trim.  


Trim Characteristics