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434 Flanged Dump/Control Valve

The INVALCO Series 434 Valve can be used in any application that requires a steel bodied flanged valve. This could include high or low pressure separators, treaters, dehydrators, or any other pressure vessel. The Series 434 is perfect for use on offshore vessels.


  • Hammer Union Construction - Reduced downtime for repair
  • Quick Change Trim - Reduced cost for repair
  • Steel Bodies - Meets all application requirements
  • Nace Adaptable - Can be modified for use in sour service


Body Material   Steel WCB   Packing  Non-Lubricated Buna N 
End Connections  2” Flanges   Maximum Working Pressure   Limited by Flange  
Body Cover   Carbon Steel, Union   Temperature Limits   -20 F to 250 F (-29 C to 121 C)
Diaphragm Operator   Carbon Steel, 65 sq. in.
Nylon Reinforced Buna N Diaphragm
Maximum Recommended Operating Pressure 70 psi
Maximum Containment Pressure 100 psi  
Stem Material   303 Stainless Steel  


General Notes:

1. Standard topworks is direct action (normally closed)

2. Cv and Cg values are for fully open inner valve

3. Part numbers applicable only when valve desired is exactly as described above

4. To order specify model number, part number, and trim description

5. See attached pdf below for parts list