초록

A gas pressure regulator useful in controlling low pressures in the range of 0 to 100 psig is economical, effective and efficient and can be used to control fixed or variable outlet pressures.

대표청구항 ▼

A pressure regulator comprising: (a) a rigid housing having inlet and outlet ports said inlet port being below said outlet port, a hollow interior, having at least two bores, the upper bore disposed above and having a larger inner diameter than the lower bore and the lower bore being below the inlet

A pressure regulator comprising: (a) a rigid housing having inlet and outlet ports said inlet port being below said outlet port, a hollow interior, having at least two bores, the upper bore disposed above and having a larger inner diameter than the lower bore and the lower bore being below the inlet port, said inlet and outlet ports being in communication with said hollow interior, a top cap sealing the top of the hollow interior and a recycle bore connecting said outlet port with said hollow interior in close proximity to the top cap; (b) A plunger slidably mounted in the hollow interior of the housing and having a lip and an upper portion disposed directly above a lower portion, said upper portion having a larger cross sectional area than the lower portion and the excess surface area of said upper portion forming said lip at the interface of said upper portion and said lower portion, said plunger having at least two sealing means, an upper sealing means and a middle sealing means being below said upper sealing means, both sealing means being in said upper portion of the plunger; (c) The plunger being movable between a closed position, said middle sealing means being above said inlet port and below said outlet port and said upper sealing means being above said outlet port; and an open position, said middle sealing means and said upper sealing means being above the outlet port; (d) A lower sealing means being below said middle sealing means and below said inlet port.