Patent ID: 7228849
Filing Date: 2007-06-12
Classification: F02M

Abstract:
1. A pressure relief valve comprising: a) a valve body having first and second opposite ends and a bore defining a flow channel extending along a longitudinal axis between said first and second ends; b) a substantially spherical valve seat positioned in said valve body bore, said seat having a central opening in fluid communication with said valve body flow channel when said valve is in the open position; c) a valve element having a concave conical surface and positioned in said valve body adjacent said valve seat, said valve element movable along said longitudinal axis of said valve body flow channel; and d) a spring positioned in said valve body flow channel for biasing said valve in the closed position wherein said valve element conical surface sits against said spherical seat surface to create a fluid-tight seal therebetween, whereby a fluid may flow through said central opening and reach said valve element, said valve element moving away from said seat and opening said valve upon the fluid flow exceeding the biasing force of said spring.