1PC, 2PCS, And 3PCS Ball Valves: A Complete Guide To Choosing The Right Valve

Ball valves are among the most widely used valves in industrial piping systems, known for their simple structure, low flow resistance, and excellent sealing performance. By rotating a spherical ball inside the valve body, they allow quick and reliable control of liquid or gas flow.

Based on construction, ball valves are generally classified into one-piece, two-piece, and three-piece designs. Each has unique features and applications, and understanding their differences can help you make the right choice.

What's the Difference Between One-Piece, Two-Piece, and Three-Piece Ball Valves?

✅ One-Piece Ball Valve

✦ Design: A single solid body with the ball permanently enclosed.

✦ Advantages: Compact, lowest cost, excellent sealing performance.

✦ Limitations: Not serviceable; replacement required if damaged.

✦ Best For: Low-pressure, low-maintenance systems where downtime is not critical.

✅Two-Piece Ball Valve

✦ Design: Two-part body (main body + end cap) with the ball sandwiched in between.

✦ Advantages: Easier to maintain, moderate cost, widely used in industrial systems.

✦ Limitations: Requires partial disassembly of piping during service.

✦ Best For: Standard industrial applications requiring occasional maintenance.

✅Three-Piece Ball Valve

✦ Design: Three-part body (center section + two end caps) that can be fully disassembled.

✦ Advantages: Easy to maintain, allows servicing without removing the valve from the pipeline, highly durable.

✦ Limitations: Higher upfront cost.

✦ Best For: High-pressure, high-temperature, or hazardous environments requiring frequent inspection or online maintenance.

How to Choose the Right Ball Valve?

Selecting the right ball valve depends on your system requirements and operational needs. One-piece ball valves are best for low-cost, compact installations with minimal maintenance. Two-piece ball valves are suitable for most industrial processes where occasional servicing is needed. Three-piece ball valves are recommended for demanding systems that require frequent inspection, high-pressure handling, or online maintenance.

SLVCN - Trusted Valve Manufacturer & Complete Ball Valve Solutions

At SLVCN, we offer a comprehensive range of one-piece, two-piece, and three-piece ball valves designed to meet diverse industry needs. Our valves come with a variety of connection options, including threaded, welded, and clamped, and can be operated manually, electrically, or pneumatically depending on process requirements. We provide a wide range of sizes and pressure ratings, from low-pressure utility lines to high-pressure critical systems, ensuring the right solution for every application. With advanced manufacturing technology and flexible customization, our valves deliver reliable performance even in the most challenging environments, whether for standard service or heavy-duty industrial operations.