Dual valve pressure relief device

Details Dual valve pressure relief device Dual valve pressure relief device

F - Mech Eng,Light,Heat,Weapons

16

K

137/57

F16K 15/00 (2006.01) H01F 27/14 (2006.01) H01F 27/40 (2006.01)

Patent

CA 1207213

ABSTRACT OF THE DISCLOSURE A pressure relief device is disclosed for use on electrical power transformers. The device utilizes two valve plates for maintaining pressurized medium in a transformer tank, each of the valve plates being maintained in seated position by helical springs acting upon the valve plates in a manner which allows the valve plates to move independently of each other to effect rapid opening and re-seating action. The device allows the rate of discharge and reclosing time to be independently varied, and thus satisfies installations wherein speed and volume of discharge is of paramount importance.

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