초록 ▼

A check valve is provided comprising a cap having an inlet port and a body with an internal recess whose periphery is engaged with the cap and contains an outlet port. A rib extends across the body recess and is supported and urged against the cap by the rib substantially along the entire length of

A check valve is provided comprising a cap having an inlet port and a body with an internal recess whose periphery is engaged with the cap and contains an outlet port. A rib extends across the body recess and is supported and urged against the cap by the rib substantially along the entire length of the rib. The diaphragm is engaged against the cap to close the valve, with the peripheral edges of the diaphragm being adapted to bend away from the cap to open the valve when a predetermined fluid pressure is exerted at the inlet port.

대표청구항 ▼

A check valve which comprises: a cap; an inlet port extending from said cap, said inlet port defining a bore which extends through said inlet port; a body defining an internal opening and in peripheral engagement with said cap; an outlet port extending from said body and defining a bore which extend

A check valve which comprises: a cap; an inlet port extending from said cap, said inlet port defining a bore which extends through said inlet port; a body defining an internal opening and in peripheral engagement with said cap; an outlet port extending from said body and defining a bore which extends through said outlet port; a rib carried by said body and extending across said opening; and a flexible diaphragm located within said opening and supported and urged against the cap by said rib substantially along the entire length of the rib, said diaphragm being engaged against the cap to close the valve with the peripheral edges of the diaphragm being adapted to bend away from the cap to open the valve when a predetermined fluid pressure differential exists between the inlet port and the outlet port; said inlet port having an area less than 36 percent of the area of said flexible diaphragm, whereby said diaphragm is prevented from being pushed into said inlet port as a result of back pressure.