Larger valves with higher torque requirements usually use hand wheels. These are commonly made use of as actuators on butterfly valves. If a valve is just too significant to reach, chain wheels may be extra to some gearbox for simple on-the-floor operation. A spring and diaphragm actuator can be regarded https://butterfly-valve39300.qowap.com/72427348/the-basic-principles-of-pneumatic-actuator-solenoid-valve