Sanitary ball valves are a type of valve commonly used in hygienic applications across various industries, including food and beverage, pharmaceuticals, and biotechnology. They are designed for easy cleaning, minimal product contamination, and precise control of fluid flow. Here’s a look at the different types of sanitary ball valves:
**1. Two-Piece Sanitary Ball Valve:**
– Two-piece sanitary ball valves consist of two main parts: the body and the valve ball assembly. These valves are relatively easy to disassemble and clean, making them suitable for applications where frequent maintenance and cleaning are required. They are available in various sizes and materials to suit different process requirements.
**2. Three-Piece Sanitary Ball Valve:**
– Three-piece Air Actuated All Stainless Sanitary Ball Valves have three separate components: the body, the bonnet, and the valve ball assembly. This design allows for more thorough cleaning and maintenance, as the valve can be completely disassembled. Three-piece valves are often used in industries with stringent hygiene standards, such as the pharmaceutical and biotechnology sectors.
**3. Single-Seat Sanitary Ball Valve:**
– Single-seat sanitary ball valves have a single sealing seat, providing tight shut-off and precise control of flow. They are commonly used in applications where leak prevention is critical, such as dairy processing and beverage production.
**4. Double-Seat Sanitary Ball Valve:**
– Double-seat sanitary ball valves have two sealing seats on both the upstream and downstream sides of the valve ball. This design provides additional sealing reliability and can be used in applications where a higher level of sealing integrity is required.
**5. Full-Port and Reduced-Port Ball Valves:**
– Full-port sanitary ball valves have a larger internal diameter, allowing for unobstructed flow of the medium. Reduced-port ball valves have a smaller internal diameter, which may result in slightly higher flow resistance but is suitable for applications where space constraints are a concern.
**6. Manual and Automated Sanitary Ball Valves:**
– Sanitary ball valves can be operated manually with a handle or automatically with pneumatic or electric actuators. Automated valves are commonly used in applications that require precise control and remote operation, such as in large-scale processing plants.
**7. Triclamp, Weld, and Threaded End Connections:**
– Sanitary ball valves come with various end connection options to suit different piping systems. Triclamp (also known as tri-clamp or tri-clover) connections are common in sanitary applications due to their easy assembly and disassembly. Weld-end connections are welded directly to the pipeline, providing a permanent seal. Threaded-end connections are used in applications where threaded connections are preferred.
**8. Cavity-Filled and Cavity-Filled-Free Design:**
– Some sanitary ball valves have a cavity-filled design, which means there is a cavity in the valve body when the valve is in the open position. This design can trap a small volume of fluid, which may lead to product retention and contamination concerns. Cavity-filled-free designs aim to minimize or eliminate this issue by modifying the valve body shape.
Choosing the right type of sanitary ball valve depends on the specific requirements of the application, including hygiene standards, flow control needs, maintenance frequency, and end connection preferences. Selecting the appropriate valve design ensures optimal performance and product integrity in hygienic and sanitary processes.