Patent ID: 8708243
Filing Date: 2014-04-29
Classification: F16K,Y10T

Abstract:
1. A valve, comprising: a housing defining an interior and including a valve seat and a structure fixedly disposed remote from the valve seat; a valve head to open and close the valve seat, fluid being permitted to flow into the interior when the valve seat is open; an elastic system anchored on the structure and coupled to the valve head, the elastic system including a biasing element and an elastic element formed of memory metal alloy disposed to contact fluid permitted to flow into the interior, the biasing element and the elastic element being configured to cooperatively move the valve head toward a valve seat open position when the fluid temperature is below a lower limit, and the biasing element and the elastic element being configured to cooperatively move the valve head toward a valve seat closed position when the fluid temperature is above an upper limit; and further comprising a pressure relief element anchored on the structure and interposed between the structure and the elastic element.