| 摘要 |
A solenoid-operated valve suitable for use in a subsea control pod comprising a valve assembly 2 and a solenoid assembly 1. The valve assembly 2, comprises fluid ports P, T & S for the receipt and delivery of hydraulic control fluid. Valve element 36 is actuable between open and closed positions in order to control the flow of hydraulic control fluid between the fluid ports. The valve element is actuable by an actuating member, push rod 15 figure 1, of the solenoid assembly. The solenoid chamber A is filled with oil and sealed against ingress of hydraulic control fluid from the valve chamber and from the ingress of oil and/or seawater from the control pod. A movable pressure balancing device 30 in the form of a flexible diaphragm is provided in the solenoid assembly so as to ensure that the internal pressure of the oil in the solenoid chamber end the external pressure of the oil in the control pod are balanced. |
