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Other Fittings-Fusible Fittings


Hikelok Fusible Fittings are thermally operated but not reusable pressure relief devices.Fusible fittings contain an eutectic alloy plug, and the eutectic alloy plug has a specific melting point. When the fitting is exposed to temperatures at or above this melting point of fusible metals, the eutectic alloy plug will melt and the pressure inside the fitting will be released to atmosphere for protection of systems. Fusible fittings do not protect against overpressure from improper charging practices.There are brass,304 stainless steel,316 stainless steel for choose.


  • Available in sizes from 1/4 to 1/2 in. and 6 mm to 12 mm

  • The body materials include 304 316 316L stainless steel,brass

  • Maximum operating pressure: Tested to 500 psi (3.4 MPa)

  • Temperature rating from 160°F (71°C) to 281°F (138°C) with 4 temperature ranges

  • Two types of fusible fittings: Pipe plug and tube adapters with 316 stainless steel body

  • Eutectic alloy is filled in the stainless plug

  • Fusible fittings function by the yielding or melting of the fuse alloy

  • Two types are available to fit the bleed ports of the transmitters


  • Quality machining of all surfaces ensures product corrosion resistance

  • Heavy wall, plus strength of material, ensures long life in severe service applications

  • All fittings have a high-quality appearance

  • Every fitting is marked with manufacturer’s name for easy source tracing

  • Hikelok Other Fittings provide variety port size for choose

  • Hikelok fittings are easy to install

More Options

  • Optional Instrumentation Pipe Fittings

  • Optional Twin Ferrule Tube Fittings

  • Optional Instrumentation Weld Fittings

  • Optional Miniature Butt-Weld Fittings

  • Optional Long Arm Butt-Weld Fittings

  • Optional Automatic Tube Butt Weld Fittings

  • Optional Metal Gasket Face Seal Fittings

  • Optional Vacuum Fittings

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