Patent ID: 9702473
Date: 2017-07-11
CPC Classifications: F16K

Claim:
1. A fusible plug type pressure relief valve comprising: a housing in which a valve passage is formed; a valve element arranged at a closed position in the housing and movable to an open position, the closed position being a position at which the valve element closes the valve passage, the open position being a position at which the valve element opens the valve passage; a pressing member configured to press the valve element in an open direction that is a direction from the closed position toward the open position; and a supporting body supporting the valve element against pressing force of the pressing member and configured to melt at not less than a predetermined melting temperature, a contact surface of the supporting body contacting the valve element to support the valve element, and the contact surface of the supporting body including an inclined portion inclined relative to an axis line of the valve element.