Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent
1991-10-25
1992-09-22
Rivell, John
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
137552, 25112904, 251206, F16K 31126, F16K 332
Patent
active
051488299
ABSTRACT:
A multi-orifice plate for use in a modified orifice fitting and a differential pressure-operated, mechanical valve and piston system for vertically adjusting the multi-orifice plate to facilitate recordation of various line pressures on an appropriate recording meter. In a preferred embodiment two or more pressure recording meters are fitted with corresponding meter valves and a common pressure selector valve, along with a spring-loaded plate piston connected to the multi-orifice plate, to facilitate operation of the plate piston and vertical shifting of the orifice plate, alignment of an orifice of selected diameter in the line bore of the orifice fitting and reading of a corresponding recording meter responsive to automatic operation of the pressure selector valve and meter valves. Fully automatic adjustment of the multi-orifice plate may be effected by implementing a remote, radio-operated transceiving unit to actuate a pneumatic switching valve and actuate the pressure selector valve and plate piston.
REFERENCES:
patent: 2314152 (1943-03-01), Mallory
patent: 3294112 (1966-12-01), Watkins
patent: 3776249 (1973-12-01), Wailes et al.
patent: 4364409 (1982-12-01), Jones
patent: 4579143 (1986-04-01), Rollins et al.
patent: 4790514 (1988-12-01), Marks
patent: 4838310 (1989-06-01), Scott et al.
Harrison John M.
Rivell John
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