Air or gas cylinder actuators include single or doubleacting, fail open or closed by mechanical spring or pneumatic force. They can be manufactured to accommodate any length stroke.
空气或燃气缸体执行机构包括单动或双动，由机械弹簧或气动力实现故障开启或关闭等各种类型。
2
Four-Way Diaphragm Pilot Valves are for use on all double-actingpneumaticcylinder actuators.