Patent ID: 6530391
Filing Date: 2003-03-11
Classification: E03B,F16K,Y10T

Abstract:
A temperature and pressure sensitive valve comprising:a valve piston for regulating flow through the valve, a valve piston guide in concentric relationship with said piston for directing movement of said piston there through, said piston guide having one or more passages there through, said piston guide being coaxially spaced with said piston a thermal element adjacent to a base of said piston and able to contract and expand based upon variations in temperature, thereby enabling movement of said piston so as to regulate flow, said thermal element able to be adjusted so as to define the opening and closing temperatures, and an elongated housing having an anterior and posterior end and an interior wall able to house said piston, guide and thermal element, wherein said housing is further comprised of two or more passages able to aid said piston in regulating flow, with at least one of said passages placed towards said anterior end of said housing, and at least one of said passages placed towards said posterior end of said housing, whereby placement of the said two or more passages provides two flow regulating passages that are sequentially opened based upon the contraction and expansion of said thermal element, thereby providing a secondary flow regulating passage in the event that the primary flow regulating passage is blocked.