| 摘要 |
<p>A pilot operated change-over valve which can operate either as a double solenoid type or as a single solenoid type by replacement of part of its components, and includes a valve casing accommodating a valve member 8, a large diameter piston 12a and a small diameter piston 12b, an electromagnetic pilot valve 3a provided at one axial end of the valve casing 4 on the side of the large diameter piston 12a for driving same, and a common interfacial end face 6b provided at the other axial end of the valve casing 4 on the side of the small diameter piston 12b, the common interfacial end face being connectible either to a second electromagnetic pilot valve 3b for driving the small diameter piston or to an adapter plate 26 for supplying a pilot fluid constantly toward the small diameter piston. <IMAGE></p> |
