Excess flow limiter

Details Excess flow limiter Excess flow limiter

1988-01-11

1989-03-07

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137 39, 137498, F16K 1724

Patent

active

048097403

ABSTRACT:
An excess flow limiter for attachment in a flow path comprising a main body with a lower inlet chamber and an upper outlet chamber connected by a central vertical passage having an inlet end and an outlet end. A freely movable slide member is sealably housed in the central vertical passage and extends into the lower inlet chamber. The slide member comprises a hollow cylinder with a closed lower end having a flange with sealing means about the closed lower end to seal the inlet end of the central vertical passage. A support is mounted in the lower inlet chamber to support the closed lower end of the slide member that extends into the lower inlet chamber thereby supporting the slide member in the central vertical passage when necessary. A set of outflow apertures are provided in the side wall of the slide member above the flange to allow passage of flowable material from the lower inlet chamber to the upper outlet chamber through the hollow cylindrical interior of the slide member. The apertures are appropriately sized to allow the passage of a specified flow of material. The flow limiter can be reset after it has been triggered to stop excess flow by a button mounted in the outlet chamber directly above the central passage.

REFERENCES:
patent: 1001324 (1911-08-01), Thompson
patent: 1119287 (1914-12-01), Krichbaum
patent: 2245271 (1941-06-01), Guill
patent: 2750956 (1956-06-01), Stevenson

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