Pressure-drop activated trap seal primer valve

Details Pressure-drop activated trap seal primer valve Pressure-drop activated trap seal primer valve

1999-07-23

2000-11-28

Rivell, John

Fluid handling

With liquid valves or liquid trap seals

Liquid seal in liquid flow line; flow liquid forms seal

13711805, F16K 1310, F16L 5524

Patent

active

061521647

ABSTRACT:
A trap seal primer valve for automatically charging water into a sewer line trap from a water line containing water under variable pressure.

REFERENCES:
patent: 2233818 (1941-03-01), Matter
patent: 3333597 (1967-08-01), Sullivan
patent: 3422835 (1969-01-01), Watts
patent: 4204556 (1980-05-01), Sullivan
patent: 4497337 (1985-02-01), Mosbrucker et al.
patent: 5263508 (1993-11-01), Perrott
patent: 5287877 (1994-02-01), Ackroyd

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