目的大型工业设计特点和益处专为长寿命运行而设计全盾覆盖踏板3孔,用于刚性安装到地板或设备材料内部阀门由有色金属,不锈钢柱塞和Teflon涂层Buna-n O形圈构成。Air flows when plunger is depressed, stops flowing when plunger is released and exhausts back pressure on output side Air exhausts around plunger Plunger can be depressed flush with valve body without damage to valve Standard 1/8-27 N.P.T. input and output ports Filtered and lubricated air supply is required for best operation Line pressure up to 150 P.S.I. Robust cast iron housing Options Hercules AirVal also available as a 3-way in either single or 2-stage versions on special order 2 Stage models available Momentary and maintained versions available