OVERTRAEKSMIDDEL avoids mist from shrouding

摘要

A diaphragm actuator (10) for first-class body manufacture process control equipment includes a shell (26), a diaphragm (56), a bar (22) and a modeling experiment in water tank. Modeling experiment in water tank includes a concave plate (54) and a boss (52), each has internal and external radial portion. Outer radial portion compressively engages and keeps diaphragm. Between the bar for being threaded onto bar and a shoulder (72) for a nut (48), inner-diameter portion forces together onto bar. Therefore, concave plate forcibly engages and directly provides a fluidtight seal without an o-ring or any other increase containment member with the shoulder of bar. In addition, concave and convex plate be in structure it is of equal value, actuator is easily switched between the open architecture of biasing and the closed configuration of biasing.