초록 ▼

A close tolerance fluid pressure relief or check valve includes a one-piece silicone poppet within a valve body. The poppet makes line contact with a concave seat surface at the inlet end of the body when the poppet is closed. A stem of the poppet extends into an inlet passage of the body to guide p

A close tolerance fluid pressure relief or check valve includes a one-piece silicone poppet within a valve body. The poppet makes line contact with a concave seat surface at the inlet end of the body when the poppet is closed. A stem of the poppet extends into an inlet passage of the body to guide poppet movement centrally between open and closed positions. The poppet is biased to its closed position by a spring within the body, the pressure setting of which is controlled by a threaded nut or fitting defining an outlet passage and closing the outlet end of the body.

대표청구항 ▼

A fluid pressure responsive valve comprising: a valve body defining an internal chamber, inlet and outlet fluid passages communicating with the chamber at opposite inlet and outlet ends of the body; a valve poppet within the chamber for controlling fluid communication between the inlet passage and t

A fluid pressure responsive valve comprising: a valve body defining an internal chamber, inlet and outlet fluid passages communicating with the chamber at opposite inlet and outlet ends of the body; a valve poppet within the chamber for controlling fluid communication between the inlet passage and the chamber; the poppet including a stem projecting into the inlet passage to guide the poppet between open and closed positions; the poppet including a lip for making line contact with a valve seat surface at the inlet end when the poppet is in the closed position; the seat surface being spherically tapered; the poppet comprising a one-piece member composed of a monolithic resilient sealing material, the member including an annular integral said sealing lip for engaging the seat surface at the inlet end and sealing the chamber from fluid communication with the inlet passage.