Fusible Plug

Fusible Plugs are thermally operated non-reclosing pressure relief devices to function by the yielding or melting of the fusible alloy.

  • Corrosion resistant construction and available in brass or stainless steel
  • Fusible Plugs are limited to be used in applications where the service pressure does not exceed 500 psig (3,440 kPa)
  • Fusible Plugs do not protect against overpressure from improper charging practices
  • Underwriters Laboratories listed and approved as Fusible Plugs, Refrigerant Globe recommends where Fusible Plugs are installed in an atmosphere which can cause stress/strains or corrosion of surfaces, the plugs be examined annually and replaced if evidence of corrosion or stress/strain is evident.
  • Used For Fire Protection
  • Mechanical Heat Activated Device
  • Corrosion Resistant Construction
  • Available in Brass or Stainless Steel
Fusible Plug Enlarge Image
Click on Part Number for Ordering Information
Temp. Rating Model/ Part Number Maximum Exposure Temp.
°F °C Fusible Plugs
1/8" NPT 1/4" NPT 3/8" NPT 1/2" NPT
165° 74° 350165 Brass/Tin Plating 370018 Brass 360015 Brass 370015 Brass 100° F
351165 Brass 370010 SS 360010 SS 370014 SS
212° 100° 350212 Brass/Tin Plating 370019 Brass 360011 Brass 370013 Brass 150° F
351212 Brass 370017 SS 360012 SS 370012 SS
281° 136° 350281 Brass/Tin Plating 370011 Brass 360013 Brass 370021 Brass 225° F
351281 Brass 370016 SS 360014 SS 370022 SS
360° 182° 351360 370023 Brass 370025 Brass 370027 Brass 300° F
370024 SS 370026 SS 370028 SS
450° 232° 370029 Brass 370031 Brass 370033 Brass 375° F
370030 SS 370032 SS 370034 SS

*Other temperatures available upon request