Balanced solenoid valves

Details Balanced solenoid valves Balanced solenoid valves

F - Mech Eng,Light,Heat,Weapons

16

K

137/34

F16K 31/02 (2006.01) F16K 31/06 (2006.01)

Patent

CA 1284078

Abstract A proportional-control solenoid-actuated fluid valve, capable of governing relatively large volumes and rates of flow swiftly and accurately with expenditure of relatively little electrical power, includes a movable valving member positioned by an armature having a substantially frictionless spring suspension, the armature being under influence of a special force-counter-balancer is the form of a bellows proportioned and disposed to exert upon it, automatically, neutralizing forces which are substantially equal and opposite to unavoidable pressure- induced imbalances afflicting the valving member. The same pressures which tend to unbalance the valve member are impressed upon opposite sides of the bellows, one through an enabling bleed port, and resulting forces developed by the bellows over a defined area are exerted upon the armature mechanically in a counterbalancing sense. APPL0879

563493

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