Electric Butterfly Valve VS Pneumatic Operated Butterfly Valve

The regulation of fluid flow in larger pipes within industries is done with butterfly valves. These valves control the opening/closing of pipes and the process can be made completely automatic with electrical/motorized actuators. But each of the butterfly valves are differentiable from one another which also makes them useful in different situations.  Continue on to find more about how each of these valves contrast with the other.

The Distinctions Between Electric Butterfly Valve And Actuator Pneumatic Butterfly Valve

Functionality

Pneumatic butterfly valves utilize compressed air to manage the valve’s opening/closing. The externally provided compressed air is used to generate movement of the modulating disc. The turning of this disc determines fluid stream.

Pneumatic butterfly valves open/close utilizing motion generated through compressed air. Motors come with electrical actuators which generate electrical energy that’s then used to move the modulating disc. A motorized butterfly valve with actuator also comes with an additional rod that links the motor to the disc. The motor moves the rod, which moves the disc and hence closes/opens fluid flow.

Structural Makeup

The general makeup for both electric butterfly valve and pneumatic butterfly valves is the same. Both are made of the following components:

• Shaft
• Sealing layer
• Valve Structure
• Actuator
• Modulating Disc

The main deviation arises from the motor in electric butterfly valve. The motor requires more gears and additional shafts combining the valve to the motor. The electrical motor utilizes the shaft to control opening/closing. But because of the additional motor, an actuator pneumatic butterfly valve is generally smaller than electric butterfly valve.

Control Precision

China electric butterfly valve offer higher quality precision when compared to pneumatic butterfly valves. Since electric butterfly valve come with a motor, it can be programmed to allow exact amounts of fluid flow by partially closing/opening the valve. 

Durability

A butterfly valve with pneumatic actuator’s general makeup is simpler than that of an electric butterfly valve. And so, it is easier to tend to and will survive a longer time. The pneumatic actuator will require very little maintenance, but other internal pieces will need regular checkups. 

Price

The simpler design of pneumatic butterfly valves make them considerably cheaper than electric butterfly valve. The additional motor and larger size of a China electric valve make electrical actuation costlier.

Final Thoughts

Choosing between a butterfly valve with pneumatic actuator and China electric butterfly valve requires an insight into what situation you need them for. Understanding the key differences and advantages between both valves is a start in identifying which valve you should buy. Still iffy over which valve to go for? Ask your questions at GOWIN Industrial Valve!