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Allegheny's 30344 is a 3-inch cast aluminum Mark IV coupling designed to join grooved-end pipe on tank trailer and industrial fluid transfer systems. It uses a black Buna-N gasket for reliable sealing and is rated for a maximum working pressure of 250 psi. Maximum recommended bolt torque is 30 ft-lbs.

  • Size: 3 inches
  • Material: Aluminum (Cast)
  • Gasket Material: Buna-N (Black)
  • Maximum Working Pressure: 250 psi
  • Weight: 1.69 pounds
  • Outer Diameter: 3.5 inches
  • Maximum Bolt Torque: 30 ft-lbs

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