SJ 2 Piece Ball Valve

The function of 2 Piece Ball Valve

Q: What is the main function of a 2 Piece Ball Valve in pipeline systems?

A: The 2 piece ball valve is a quarter-turn manual shut-off valve with a two-part split valve body. Its main function is to reliably cut off or permit fluid flow inside industrial pipelines. Rotating the handle by 90 degrees aligns or separates the ball bore from the pipeline passage to control media flow. It can be used for isolation service, and supports inline inspection and maintenance by separating the two-piece body without fully removing the entire valve from the pipeline.

Conclusion: Therefore, the main function of the 2 piece ball valve is to provide simple, effective fluid on-off isolation for pipelines, while simplifying disassembly and maintenance operations.

The principle of using 2 Piece Ball Valve

Q: What is the working principle of a 2 Piece Ball Valve?

A: It works by 90-degree rotation of the ball inside the two-piece split body. When the valve opens, the through bore of the ball lines up with the pipeline to allow medium to flow through. When closed, the solid spherical surface presses tightly against the valve seat to block fluid passage. The two-piece body consists of a main body and a connecting body bolted together, which can be disassembled for inspection, ball and seat replacement without removing the whole valve assembly from the piping

Conclusion: Therefore, the operating principle of the 2 piece ball valve relies on 90° ball rotation to realize flow on-off. Its split two-piece body design greatly simplifies internal component access and maintenance work.

The operating conditions and advantages of 2 Piece Ball Valve

Q: What are the common applications and key advantages of 2 Piece Ball Valves?

A: This valve is widely used in oil & gas, petrochemical, chemical, water treatment and general industrial pipeline systems, suitable for liquid, gas and low-viscosity media under medium pressure and temperature service. Its key advantages include:

Simple Structure: Two-piece bolted body design with fewer components, easy to assemble.

Convenient Maintenance: Can be disassembled in-line to replace ball and seats without removing full valve from pipe.

Excellent Sealing: Precision ball and seat pairing achieves bubble-tight shut-off, low leakage risk.

Wide Material Selection: Available in WCB carbon steel, stainless steel and alloy to match different media.

Full Bore Option: Full bore design minimizes pressure drop and permits pipeline pigging.

Cost Effective: Competitive price and reliable performance for general and medium-duty isolation.

Conclusion: Therefore, the 2 piece ball valve provides economical and dependable flow isolation for industrial pipelines. With benefits of simple construction, easy maintenance and flexible material options, it is a popular on-off valve for general process applications.

As a leading industrial valve manufacturer, SJ is proud to offer its high-performance 2 Piece Ball Valve solutions, specifically engineered for manual isolation service in oil, gas, and chemical applications. Our two-piece ball valve adopts a bolted split body construction. A simple manual handle drives the ball for 90-degree rotation to quickly open or shut off the pipeline flow. The split body allows easy disassembly for inspection and replacement of internal parts. Available in multiple body materials including WCB, CF8, CF8M, our 2 piece ball valve complies with API 6D and ISO standards, to deliver the safety, efficiency, and durability your process lines demand.