Method of making a condition responsive valve construction

A method of making a condition responsive valve construction comprising the steps of forming a first housing means to have an internal chamber therein and an inwardly directed shoulder projecting into said chamber and defining a first valve seat on one side thereof and a spring seat on the other side thereof, said forming step also forming said chamber to define an open end of said first housing means that is spaced outboard of said shoulder thereof, disposing an axially movable valve member in said chamber for controlling said first valve seat, disposing a spring between said spring seat and said valve member to tend to move said valve member in one axial direction in said chamber, interconnecting a condition responsive device to said valve member to move said valve member in the other axial direction upon an increase in sensed condition, securing a second housing means to said first housing means, forming said second housing means with a chamber aligned with said chamber of said first housing means and receiving said valve member therein, forming said second housing means with an inwardly directed shoulder projecting into its respective chamber, forming said first valve seat from a resilient annular member, and disposing said annular member against said one side of said shoulder of said first housing means and against an adjacent side of said shoulder of said second housing means so as to project inwardly beyond said shoulders to sealing engage said valve member, said step of securing said second housing means to said first housing means causing said adjacent side of said shoulder of said second housing means to be disposed in said chamber of said first housing means and, thus, be disposed inboard of said open end of said first housing means.