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    3 Products

    Adjustable Vacuum-Relief Valves for Air and Inert Gas

    Image of Product. Front orientation. Vacuum-Relief Valves. Adjustable Vacuum-Relief Valves for Air and Inert Gas.
    These valves begin opening at the set vacuum level and fully open at about 10% over the set point. They begin closing as the vacuum level drops and fully close when the system is restored below the set point. Adjust the set vacuum level within the range. Valves have a vented relief port to exhaust discharge directly.
    Inlet
    Vacuum Set Point
    Pipe
    Size
    Location
    Relief Port
    Location
    Range,
    in. Hg
    Adjustment Method
    Overall
    Ht.
    For Use With
    Temp. Range,
    ° F
    Each
    NPT Male Inlet and Vacuum Relief Vent
     
    Brass Body—440C Stainless Steel Seal
    1/4
    		BottomTop0 to 27External Adjustment Screw1 3/4"Air, Inert Gas-15 to 2500000000000000
     
    Brass Body—Buna-N Seal
    3/8
    		BottomTop0 to 27External Adjustment Screw2 1/16"Air, Inert Gas-15 to 2500000000000000
    3/4
    		BottomTop0 to 27External Adjustment Screw2 5/8"Air, Inert Gas-15 to 2500000000000000
     
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