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Fisher™ C486 Series Internal Valves
C486 Series Internal Valve is designed to shutoff remotely or automatically when flow exceeds valves rated capacity or if the valve is sheared off due to an impact.
It is use in bobtails, transport trucks and large stationary tanks. The inlet flange eliminates the need for additional connections and allows to quickly bolt to existing installations.

CAD Drawings and Models: Click Here
Fisher™ C486 Series Internal Valves


Body Sizes and End Connection Styles (inlet x outlet)
Inlet: 3-inch CL300 RF Flange / DN80
Outlet: 3-inch FNPT / DN80
Maximum Allowable Inlet Pressure
400 psig / 27.6 bar WOG
Temperature Capabilities
-20 to 150°F / -29 to 66°C
Approximate Weights
20 Pounds / 9.1 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


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