F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 3/22 (2006.01) A62C 35/68 (2006.01) A62C 37/50 (2006.01) F16K 3/34 (2006.01) F16K 5/06 (2006.01) F16K 5/10 (2006.01) F16K 17/04 (2006.01)
Patent
CA 2245164
A sprinkler drain and test valve for testing sprinkler systems including a housing, an inlet and outlet disposed on either end of the housing, a ball disposed within the housing between the inlet and the outlet having three channels extending therethrough that provide communication between the inlet and outlet. A pressure relief valve is carried within one of the channels for opening the flow through the valve when a pressure from fluid flow exceeds a pre-determined pressure when the valve is in the first position and for blocking fluid flow when the valve is in a hydrostatic test angular position.
Gowling Lafleur Henderson Llp
Johnson Augustus W.
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