23+ Butterfly Valve With Actuator Symbol PNG. 66 995 просмотров 66 тыс. Electric actuator mounted on feature of butterfly valve:
Single stem Butterfly valve symbol 300 dia butterfly valve ... from www.chinavalvesmanufacturer.com This actuator requires no field lubrication, is fully repairable inline and mounts directly to the valve in any quadrant. Yy double eccentric structure ensures low operating torques with zero leakage performance. Butterfly valves operation is similar to the ball valve, which allows it to close quickly.
Butterfly valves have only a couple of parts in contact with the process fluid.
Normally, they are used in systems where a positive large butterfly valves are usually equipped with gearbox type actuator, where the handwheel is connected to the stem via a gearbox. Like most common valve designs, butterfly valves consist of an actuator, stem, disc, bonnet and body. Variety of linings can be used to isolate the valve body from process these valves offer more precise flow control compared to the on/off valves. Actuating torques a safety coefficient has already been included in the actuating torques for actuator selection.
