Products
Three-piece Threaded Ball Valve

Three-piece Threaded Ball Valve

The Three-Piece Threaded Ball Valve represents the pinnacle of maintenance-friendly valve design, combining superior serviceability with robust performance in demanding fluid control applications. This innovative valve features a three-component construction comprising a central body section housing the ball and seat assembly, flanked by two threaded end caps. The unique design allows for complete removal of the central module for inspection, cleaning, and maintenance without disturbing the pipeline connections. With precision threaded ends conforming to NPT or BSP standards and full-port flow capabilities, this valve delivers exceptional performance while significantly reducing system downtime during service operations.

Product Features & Competitive Advantages

 

1. Revolutionary In-Line Serviceability

The three-piece design enables complete access to internal components by simply removing the connecting bolts and extracting the central body section. This allows for seat replacement, stem maintenance, and internal cleaning without unscrewing the end connections from the pipeline, dramatically reducing maintenance time and costs.

2. Full-Port Flow Optimization

Engineered with full-bore design that matches the pipe internal diameter, providing minimal flow restriction and pressure drop. This configuration ensures optimal flow characteristics, making it ideal for applications requiring maximum flow efficiency and pipeline pigging capability.

3. Premium Material Construction

Manufactured from high-grade materials including 316 stainless steel, carbon steel, or specialized alloys to suit specific service conditions. The valve features precision-machined components with advanced seating materials such as reinforced PTFE, PEEK, or metal seats for extended service life.

4. Enhanced Safety and Reliability

Incorporates multiple safety features including blow-out proof stem design, anti-static devices, and fire-safe construction compliant with API 607 standards. The live-loaded packing system ensures ongoing stem seal integrity while the robust construction withstands high-pressure cycling.

5. Flexible Configuration Options

Available in various trim configurations and material combinations to accommodate diverse media including corrosive chemicals, high-purity applications, and high-temperature services. Optional ISO 5211 mounting pads facilitate easy actuator integration for automated control systems.

 

 

Typical Specifications

Size Range: ¼" to 2" (DN8 to DN50)

Pressure Rating: Up to 3000 PSI (Depending on Configuration)

Temperature Range: -25°C to 232°C (Extended ranges available with special trim)

Body Materials: 304 SS, 316 SS, Carbon Steel, Alloy Steel

End Connections: NPT, BSPT, BSPP Threads

Port Type: Full Port (Standard), Reduced Port (Optional)

Seat Materials: PTFE, RPTFE, PEEK, Metal

Stem Material: 17-4PH Stainless Steel

Design Standards: ASME B16.34, API 608

Test Standards: API 598, ISO 5208

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Applications

 

 

This versatile valve excels in numerous demanding applications:

Chemical and petrochemical processing systems

Pharmaceutical and bioprocessing equipment

Instrumentation and control systems

Power generation and utility services

Industrial process and manufacturing systems

High-purity and sanitary applications

 

After-Sales Support

 

We ensure optimal performance through comprehensive support services:

 

 

◎Maintenance Documentation: Detailed disassembly/assembly guides and torque specifications

◎Technical Support: Application engineering and material selection assistance

◎Spare Parts Program: Complete inventory of seal kits, stems, and replacement components

◎Certification Package: Material test reports, pressure test certificates, and compliance documentation

 

FAQ

 

Q: What maintenance advantages does the three-piece design offer compared to one-piece valves?

A: The three-piece design allows complete access to internal components by simply removing the central body section, enabling seat replacement, stem maintenance, and internal inspection without disturbing the pipeline connections. This eliminates the need for pipe cutting or system realignment during maintenance operations.

Q: Are full-port configurations available across the entire size range?

A: Yes, full-port design is standard across our entire product range from ¼" to 2" sizes. This ensures consistent flow efficiency and minimal pressure drop regardless of valve size, with the additional benefit of pigging capability in larger sizes.

Q: What pressure ratings can be achieved with three-piece threaded design?

A: Our valves are rated for working pressures up to 3000 PSI, with specific ratings dependent on size and material selection. All valves undergo rigorous testing per API 598 standards to ensure reliability under rated conditions.

Q: How do I ensure leak-tight reassembly after maintenance?

A: We provide detailed torque specifications for bolted connections and recommend proper thread sealing techniques for end connections. Using genuine replacement gaskets and following our reassembly procedures ensures leak-tight performance after maintenance.

Q: What is the typical service life and maintenance interval?

A: Service life depends on operating conditions, but with proper material selection and normal service conditions, these valves typically operate for years without major maintenance. The accessible design allows for periodic inspection and preventive maintenance, significantly extending service life compared to non-serviceable designs.

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