Unox Double-Acting Pneumatic Actuated U-PVC Butterfly Valve

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) material, designed to control the flow of fluid within a pipe or tube. Butterfly valves are commonly used to open and close the flow of liquids or gases. U-PVC butterfly valves are particularly preferred for water plumbing systems or pipelines due to their lightweight construction and easy installation. Furthermore, the corrosion-resistant properties of U-PVC material make these valves durable and long-lasting.

How Does a Butterfly Valve Work?

The operating principle of a butterfly valve is based on a disk-shaped component (often referred to as the "butterfly") that rotates to open or close the valve. The disk is attached to a shaft and is controlled by a lever or actuator. When the valve is opened, the disk aligns with the flow path, allowing fluids to pass through with minimal resistance. The quarter-turn rotation provides an efficient means of controlling the flow of fluid while minimizing the space required for installation. The disk's design ensures low-pressure drop and efficient fluid flow without significantly reducing velocity.

Where Are U-PVC Butterfly Valves Used?

1. Water Treatment Plants: Used in various treatment stages, such as filtration and disinfection, to regulate water flow.

2. Chemical Processing: Ideal for handling corrosive chemicals, making them suitable for chemical processing plants.

3. Food and Beverage Industry: Used to control the flow of air, steam, liquids, or gases through pipelines.

4. HVAC Systems: Employed to control airflow in heating, ventilation, and air conditioning systems.

5. Agricultural Irrigation Systems: Controls water flow to fields and crops.

6. Piping Systems: Commonly used to control the flow of water in plumbing systems.

7. Industrial Applications: Includes oil & gas production, pharmaceuticals, energy plants, and various other industries requiring reliable flow control.

General Characteristics of Polyethylenes:

• Robust: Resistant to physical stress and wear.

• Resistant to Acids, Bases, and Solvents: Ideal for harsh environments and chemical handling.

• Superior Dielectric Properties: Great for electrical isolation in industrial applications.

• Environmental Resistance: Performs well under a wide range of temperatures and conditions.

Pneumatic Actuators and Force Information Based on Their Codes:

• 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 Methods:

1. On/Off Control: Simple binary control where the valve is either fully open or fully closed.

2. Proportional Control: Allows for more precise control of the flow rate, where the valve's position can be adjusted continuously.

Construction Details:

• Aluminum Extrusion: Cylindrical surface produced using highly precise manufacturing techniques for corrosion resistance and low friction, ensuring durability and extended service life.

• Compact Pistons: Made from special aluminum alloys, these pistons are designed for quick operation and easy reversal of direction.

• Pinion: High-quality, corrosion-resistant steel pinions designed to be compatible with piston stroke, ensuring smooth operation at various mounting angles (45°-90°).

• Bearings: Made from industrial-grade plastic, designed to minimize friction and reduce wear on sliding surfaces.

• Gears: Precision-machined modular gears designed for quiet, efficient operation at maximum efficiency.

• Stainless Steel Fasteners: Durable, corrosion-resistant stainless steel fasteners ensure long-lasting reliability in harsh environments.