Fluid control valve

Details Fluid control valve Fluid control valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/38 (2006.01) F16K 1/36 (2006.01) F16K 25/00 (2006.01)

Patent

CA 2197039

Needle valves which are seated in valve seats defined by circular edges have DELRIN® tips for the purpose of minimizing unseating torque which would otherwise be excessive due to the thermal expansion and contraction characteristics of the valve seats and the needle valves. In salt spreaders with aluminum valve seats and steel needle valves, the needle valves become stuck in the valve seats if the needle valves are seated after operation in frigid weather and the salt spreaders are subsequently garaged to raise the temperature of the valve seat and needle valves. By utilizing the DELRIN® tips, the needle valves do not become stuck.

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