Pneumatic valve actuator 957/967

linearmembranesingle-acting

1. - Positive action - air-to-close type 2. - Reaction - air-open Spring Range: Positive action: 20~100Kpa, 40~200Kpa Reaction: 80~200Kpa, 120~240Kpa Product Features 1. - This sériés is a linear pneumatic diaphragm actuator with multi-spring structure, light weight, small size, large output driving force and high performance. Its working principle is: the air pressure converted by the electric or gas signal of the regulating instrument through the positioner is input into the diaphragm chamber, acting on the diaphragm to generate thrust, so that the output shaft moves, and at the same time compresses the spring until it is balanced with the reaction force of the spring, so that the output shaft reaches the predetermined position. Position control can also be achieved by directly acting on the diaphragm with the gas signal. 2. - This sériés of actuators are divided into two types: direct action (957) and reverse action (967). The design of this actuator can enable the control valve to be reliably switched or adjusted.