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Fisher™ Type C404-32 Internal Valve
Type C404-32 flanged internal valve has gained wide field acceptance for use as primaryshutoff valve, excess flow valve and back check valve.
The valve can be used in conjunction with or without pumps and compressors. Because of the integral back check function of this valve, selective filling of manifold storage tanks requires the use of additional shutoff valve.

CAD Drawings and Models: Click Here
Fisher™ Type C404-32 Internal Valve


Body Sizes and End Connection Styles (inlet x outlet)
Inlet: 3-inch / DN 80 CL300 RF Modified Flange (4.63-inches / 118 mm diameter bore) or 4-inch / DN 100 CL300 RF Modified Flange (5.88-inches / 149 mm diameter bore)
Outlet: 3 or 4-inch / DN 80 or 100 CL300 RF
Maximum Inlet Pressure
400 psig / 27.6 bar WOG
Excess Flow Springs
3-inch: 150, 200, 250, 400, or 500 GPM / 568, 757, 946, 1514, or 1893 l/min Propane
Temperature Capabilities
-40° to 150°F / -40° to 66°C
Approximate Weights
50 Pounds / 23 kg


  • Patented rapid equalization bleed area
  • Unique Serviceability Features
  • Excess Flow Closure
  • Back Check Feature
  • Spring loaded polytetrafluoroethylene (PTFE) stub shaft packing
  • PTFE wear pads Rulon® Bushings at critical wear points
  • Manual, Cable, or Air Open/Close valve actuators
  • Thermal Fusible links or plugs melt at 212 to 220°F / 100 to 104°C and allow valve closure in the event of a fire at the valve