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Murphy Pneumatic Valve for Fuel Gas Shutoff 2 in. - M5180-P

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Murphy Pneumatic Valve for Fuel Gas Shutoff 2 in. - M5180-P

Product Condition: NEW
Murphy Pneumatic Valve for 2 in. (52 mm) Gas Lines M5180-P
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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The Murphy M5180-P is a pneumatically controlled fuel shut-off valve that opens and closes automatically or semi-automatically. A manual lever aids in opening the valve when control pressure is insufficient. A gas escape vent, when properly vented and maintained, releases trapped gas from the valve after shutoff. The M5180-P is for 2 in. (52 mm) gas lines. It automatically opens at 2 psi (14 kPa) [.14 bar] and fully opens the seat at 3 psi (21 kPa) [.21 bar]. The valve can be manually opened with lever and latched against inlet pressure of 100 psi (689 kPa) [6.89 bar]. The latch will release after pilot pressure reaches 2.5 psi (17 kPa) [.17 bar].


  • Automatic: As the control pressure/vacuum increases the valve will open. When the control pressure/vacuum decreases, the valve will close.
  • Semi-Automatic: If the control pressure/vacuum is too low and the valve does not open automatically, it can be opened manually by lifting the built-in lever arm and setting the latch. The latch resets automatically when control pressure rises enough to release it.



  • For 2 in. (52 mm) gas lines
  • Sandcast aluminum (alodined for corrosion resistance)
  • Pneumatically Open and Shut Off Fuel Gas Automatically or Semi-automatically



  • Part No.: M5180-P
  • Valve Body: Sandcast aluminum (alodined for corrosion resistance)
  • Valve Seat: Buna-N
  • Valve Inlet Pressure (Maximum): 100 psi (689 kPa) [6.89 bar]
  • Parts Exposed to Gas Line Flow: Aluminum • Buna-N
  • Control Diaphragm: Flexweave polyester fabric and Buna-N elastomer
  • Control Pressure (Maximum): 80 psig (552 kPa) [5.52 bar]
  • Shipping Weight: 14 lbs 9 oz (6.61 kg)
  • Shipping Dimensions: 12-1/4 x 12-1/4 x 9-3/4 in. (311 x 311 x 248 mm)

Additional Information

Product Condition NEW
upc No

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