Fluid timer

A fluid timer for controlling the flow of a fluid, said fluid timer having a body, an inlet passage connected to an annular valve seat, an outlet passage leading from the valve seat, a valve member adapted to seal on said seat under the influence of a spring, a timer mechanism, a cam member driven by said timer mechanism, and a push rod operated by said cam member to move said spring to allow said valve member to open by fluid pressure in the inlet characterized by said timer mechanism being mounted in and drivingly connected to a housing having an opening, and a cap closing said opening, said housing forming said cam chamber, and there being a sealing diaphragm sealed between said housing and cap and with said housing forming a sealed compartment for said timer mechanism.