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    6 Products

    Heat-Activated Threaded Pressure-Relief Discs

    Image of Product. Front orientation. Pressure-Relief Discs. Heat-Activated Threaded Pressure-Relief Discs.
    Also known as fusible plugs, these discs have a metal core that melts at a set temperature to exhaust discharge directly and allow unrestricted flow. Install these one-time-use discs in pipelines and tanks.
    500 psi Maximum Pressure—These discs should not be used in a system with an operating pressure greater than 500 psi.
    Maximum Operating Temperature—Exceeding the maximum operating temperature decreases service life and may cause the disc to open below its melting temperature.
    Inlet
    Pipe
    Size
    Location
    Relief Port
    Location
    Max. Pressure,
    psi
    Max. Operating
    Temp., ° F
    Overall
    Ht.
    Disc Material
    Valve Type
    Each
    NPT Male Inlet and Vent Relief Port
     
    Brass Body—165° F Melting Temperature
    1/4
    		BottomTop5001003/4"Bismuth, Cadmium, Lead, TinRupture Disc0000000000000
    3/8
    		BottomTop5001003/4"Bismuth, Cadmium, Lead, TinRupture Disc000000000000
    1/2
    		BottomTop5001007/8"Bismuth, Cadmium, Lead, TinRupture Disc000000000000
     
    Brass Body—212° F Melting Temperature
    1/4
    		BottomTop5001503/4"Bismuth, Lead, TinRupture Disc000000000000
    3/8
    		BottomTop5001503/4"Bismuth, Lead, TinRupture Disc000000000000
    1/2
    		BottomTop5001507/8"Bismuth, Lead, TinRupture Disc000000000000
     
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