Unox Double Acting Pneumatic Actuator U-PVC Ball Valve for Acid Applications
What is a Pneumatic Actuated U-PVC Ball Valve?
A U-PVC (unplasticized polyvinyl chloride) ball valve is a type of valve used to control the flow of liquids, gases, or other media in piping systems. It consists of a spherical ball housed inside a valve body. The ball has a hole through its center; when the valve is open, the hole aligns with the pipeline to allow flow. When closed, the ball rotates 90°, positioning the hole perpendicular to the flow and stopping it completely.
When equipped with a pneumatic actuator, the valve is operated automatically using compressed air, enabling fast, reliable, and remote-controlled operation.
Where Are Pneumatic U-PVC Ball Valves Used?
U-PVC ball valves are commonly used in:
- Plumbing systems
- Water treatment plants
- Chemical dosing systems
- Industrial and commercial process lines
- Corrosive and acidic fluid applications
They are preferred due to their durability, corrosion resistance, and low maintenance requirements. Since they operate with a quarter-turn mechanism, they are easy to use and highly efficient.
General Characteristics of U-PVC Material
U-PVC offers several advantages:
- High mechanical strength
- Resistance to acids, bases, and chemical solvents
- Excellent dielectric (electrical insulation) properties
- Strong resistance to environmental conditions
Pneumatic Actuator Specifications
Depending on system requirements, actuators are selected based on 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
Additional accessories such as switch boxes and directional valves can be integrated as optional components.
Valve Control Types
Ball valve operation is generally classified into two types:
- On-Off control
- Proportional (modulating) control
Actuator Construction Features
- Anodized aluminum extruded body with high corrosion resistance and low friction
- Compact pistons made of special aluminum alloy for fast and flexible operation
- High-quality steel pinion allowing installation at different angles (0°–90°)
- Low-friction engineering plastics to minimize wear and extend service life
- Precision-machined gear system for smooth and silent operation
- Stainless steel fasteners for long-term corrosion resistance
Summary
Pneumatic actuated U-PVC ball valves are reliable, durable, and highly efficient solutions for controlling fluid flow in water, chemical, and industrial systems. They combine chemical resistance of U-PVC with the speed and automation capability of pneumatic actuation, making them ideal for modern industrial applications.