Single-Acting Pneumatic Actuated U-PVC Butterfly Valve for Water Applications
What is a Pneumatic Actuated U-PVC Butterfly Valve?
A U-PVC butterfly valve is a type of valve made from unplasticized polyvinyl chloride (U-PVC). Butterfly valves are used to start, stop, or regulate the flow of fluids inside a pipeline or piping system. They are commonly used in water distribution and industrial piping applications.
U-PVC butterfly valves are widely preferred due to their lightweight structure, easy installation, and strong resistance to corrosion. These properties make them suitable for long-term use in various environments.
How Does a Butterfly Valve Work?
The working principle of a butterfly valve is based on a rotating disc inside the pipe:
- When the valve is open, the disc aligns with the flow direction, allowing fluid to pass with minimal resistance.
- When the valve is closed, the disc rotates perpendicular to the flow and completely blocks it.
This quarter-turn operation allows fast and efficient flow control.
Where Are U-PVC Butterfly Valves Used?
- Water treatment plants (filtration and disinfection processes)
- Chemical processing industries (due to corrosion resistance)
- Food and beverage industry (liquid and gas flow control)
- HVAC systems (airflow regulation in ducts)
- Agricultural irrigation systems
- Plumbing and water distribution systems
- Industrial sectors such as oil & gas, pharmaceuticals, and power plants
General Properties of Polyethylene Materials
- High mechanical strength
- Resistant to acids, bases, and solvents
- Excellent electrical insulation (dielectric properties)
- Resistant to environmental conditions
Depending on application requirements, pneumatic actuators with torque values ranging from 9 Nm to 400 Nm are used. Optional accessories such as switch boxes and directional valves can also be integrated.
Pneumatic Actuator Models and Torque Values
- UDA 040 = 9 Nm
- UDA 052 = 25 Nm
- UDA 063 = 50 Nm
- UDA 083 = 94 Nm
- UDA 092 = 135 Nm
- UDA 105 = 270 Nm
- UDA 125 = 400 Nm
Control Types
- On/Off control
- Proportional control
Construction Features
- Aluminum extruded body with high corrosion resistance and low friction for long service life
- Symmetrical design for easy installation and reversible operation
- Compact aluminum alloy pistons for fast response
- High-quality steel pinion for flexible 45°–90° mounting
- Industrial-grade plastic bearing elements to reduce wear and friction
- Precision-machined modular gears for smooth and quiet operation
- Stainless steel fastening elements for long-term durability