| 摘要 |
A valve assembly (10) to regulate the flow of a refrigerant. The valve assembly (10) includes a movable valve member (25) to which there are attached two pistons (29 and 30). A refrigerant under pressure is applied to the pistons (29 and 30) to cause movement of the movable valve member (25) to connect or disconnect pipes (17 and 18) through which the refrigerant is to flow. |
