Unox Three-Piece Top-Flanged Stainless Steel Threaded Ball Valve

What is a Three-Piece Stainless Steel Ball Valve?

A three-piece stainless steel ball valve is a quarter-turn valve that uses a ball-shaped disk to start or stop the flow. It is defined as a mechanical device that directs and modulates the flow of various types of fluids by opening a sphere with an opening in the center of the valve. By turning the handle on the valve, the port controlling the pressure from the fluid flow can be manually opened or closed. Durability and excellent sealing are features that make ball valves advantageous compared to other types of valves.

How Does a Three-Piece Ball Valve Work?

More complex control systems that need to regulate flow from a pipeline will require an actuator. The actuator controls the valve pneumatically or electrically and ensures that the fluid flow is accurately positioned for varying pressures and flow rates. When selecting a suitable valve, factors to consider include temperature and pressure, number of ports, valve size, body material type, end connections, and configurations.

General Features

• Body: AISI304 Stainless Steel

• Ball: AISI304 Stainless Steel

• Connections: BSP Threaded

• Nominal Diameter: DN15 (1/2”) – DN100 (4”)

• Pressure Rating: Max. 63 bar

• Temperature: According to material, -10ºC to +180ºC

Application Areas

• Air, gas, and liquid applications

• Drainage and venting in liquid, gas, and other fluid services

• Steam service

• Food processing facilities

• Chemical industry

• Paper, PET, and recycling applications

Advantages and Disadvantages of Ball Valves

Advantages

• Fast opening and closing operation

• Tight sealing with low torque

• Smaller size compared to most other valves

Disadvantages

• Conventional ball valves have weak throttling capabilities

• In slurry or similar applications, suspended particles can settle, get trapped in the body cavities, and cause wear, leakage, or valve failure