Sprinkler drain and test valve

Details Sprinkler drain and test valve Sprinkler drain and test valve

1985-01-30

1987-04-07

Frankfort, Charles

Measuring and testing

Blower, pump, and hydraulic equipment

137559, 251207, 251208, G01M 1900, F16K 510

Patent

active

046550780

ABSTRACT:
A sprinker drain and test valve for testing a sprinkler system includes a housing, an inlet and an outlet disposed on either end of the housing, a ball valve disposed within the housing between the inlet and the outlet, the ball valve defining two channels that provide communication between the inlet and the outlet, the first of the channels allowing a flow substantially equivalent to that of one single sprinkler head in the system and the second of the channels allowing a relatively unrestricted flow, a handle for alternatively rotating the ball valve between a first position in which the first channel provides communication between the inlet and outlet and a second position in which the second channel provides communication between the inlet ad outlet, a portion of the ball valve for preventing communication between the inlet and the outlet, and a sight glass disposed downstream of the ball valve.

REFERENCES:
patent: 350510 (1886-10-01), Stretch
patent: 421224 (1890-02-01), Applegarth
patent: 926774 (1909-07-01), Schmidt
patent: 1056344 (1913-03-01), Lester
patent: 1229038 (1917-06-01), Cornelius
patent: 1264775 (1918-04-01), Coles
patent: 1333048 (1920-03-01), Webster
patent: 1666918 (1928-04-01), Scoville
patent: 1757237 (1930-05-01), Deutsch
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patent: 2621012 (1952-12-01), Graham
patent: 2660560 (1953-11-01), Pickard
patent: 2859611 (1958-11-01), Morse
patent: 3134405 (1964-05-01), White et al.
patent: 3386461 (1968-06-01), Fisher
patent: 3517554 (1968-05-01), Smith
patent: 3817097 (1974-06-01), Heroux
patent: 3854497 (1974-12-01), Rosenberg
patent: 4130128 (1978-12-01), Kaneko
patent: 4244393 (1981-01-01), Lehtinen
"Standard for the Installation of Sprinkler Systems", NFPA 13, 1983 Edition, pp. 13-135.

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