| 摘要 |
A pilot valve element (98) includes a metallic body formed integrally with a plunger, a flexible sealing member (112), fitted on a tip of the body, which touches and leaves a pilot valve seat (51), and a stopper (118) for restricting the displacement of the pilot valve element (98) relative to a driven member (40) in a manner such that the sealing member (112) is stopped in a direction of axis line after the sealing member (112) has seated on a pilot valve seat (51). The stopper (118) is configured such that the pressure-receiving diameter of the sealing member (112), which receives a pressure difference between an upstream side and a downstream side of the pilot valve (8), remains unchanged from when the sealing member (112) comes in contact with the pilot valve seat (51) until when the sealing member (112) is stopped by the stopper (118) with the result that the sealing member (112) has completely seated on the pilot valve seat (51). |
