Sprayer tank cap with incorporated pressure relief valve

Details Sprayer tank cap with incorporated pressure relief valve Sprayer tank cap with incorporated pressure relief valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/30 (2006.01) F16K 1/52 (2006.01) F16K 39/02 (2006.01)

Patent

CA 2585896

A cap for closing a sprayer tank has integrated therein a pressure relief valve having a tubular member providing a seat with respect to which a valve provided by an o-ring on a stem is displaced in a direction against the seat to close the valve. The stem is connected at one end thereof to a cap and is biased by a spring around the stem at the opposite end thereof into closing position. The cap is guided by a rim around the seat member. The cap defines around the stem a chamber. This chamber communicates with a spout which directs pressurized flow away from the cap when it is rotated to manually open the valve against the bias of the spring so as to relieve pressure in the tank. The passageway provided by the spout and the chamber is much larger than the passageway around the rim of the cap so that substantially all of the pressurized flow is diverted by this snout away from the fingers of the person grasping the cap at ears providing wings on the cap for rotating the cap to displace the valve to open position.

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