Multi-function valve for a riser in a sprinkler system

Details Multi-function valve for a riser in a sprinkler system Multi-function valve for a riser in a sprinkler system

1994-03-07

1995-11-14

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137513, 13751627, 137517, 137541, 13761421, 23953315, 239571, 239572, F16K 1730

Patent

active

054657520

ABSTRACT:
A multi-function valve for installation in a riser of a sprinkler system provides two valve functions. One function is to stop flow automatically when breakage of a sprinkler head causes the flow rate to exceed a predetermined threshold. The second function is to prevent back flow and reduce the risk of the "hammer effect" causing damage to the sprinkler system.

REFERENCES:
patent: 693133 (1902-02-01), Hennebohle
patent: 3794077 (1974-02-01), Fanshier
patent: 3951379 (1976-04-01), Cornelius
patent: 4131235 (1978-12-01), Lieding
patent: 4488566 (1984-12-01), Hicks
patent: 4736889 (1988-04-01), Stephenson
patent: 4842198 (1989-06-01), Chang

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