2PCS Cast Steel Trunnion Mounted Ball Valve

2PCS Cast Steel Trunnion Mounted Ball Valve – Comprehensive Overview

A 2PCS cast steel trunnion mounted ball valve is a robust, high-performance valve designed for secure isolation and control in demanding industrial applications. The "2PCS" designation refers to its two-piece split body construction, which allows easier access to internal components for maintenance and inspection. The trunnion-mounted design supports the ball from both the top and bottom, reducing seat wear and operational torque, while the cast steel body provides excellent strength and cost efficiency for large-size, high-pressure service.

Typical Operating Conditions

This valve type is widely used in:

• Oil & Gas Transmission Pipelines – For onshore and offshore hydrocarbon transportation.

• Petrochemical and Refining Units – Managing high-pressure process streams in cracking, distillation, and reforming plants.

• Power Generation Facilities – Controlling steam, feedwater, and cooling circuits.

• LNG and Cryogenic Applications – Configurable with low-temperature trims and seals for liquefied gas handling.

• Water and Slurry Systems – Suitable for industrial water distribution and abrasive fluid transport with appropriate lining or coatings.

Material Considerations and Performance

• WCB/WCC Cast Carbon Steel – Cost-effective option for non-corrosive, high-pressure applications.

• LCB/LCC Low-Temperature Carbon Steel – Maintains impact toughness at sub-zero conditions for LNG and cold climates.

• CF8/CF8M Stainless Steel – Enhanced corrosion resistance for chemical and wet gas service.

• Duplex Stainless Steel – Combines high strength with superior chloride corrosion resistance for marine and offshore applications.

Cast steel offers manufacturing flexibility for large-diameter valves, while modern foundry processes ensure high integrity and consistent mechanical properties.

Types and Configurations

• Side Entry 2PCS Design – The most common, with body bolted in two halves for straightforward assembly and maintenance.

• Fully Welded 2PCS Body – Enhanced sealing integrity for buried or subsea service, minimizing external leak paths.

• Soft-Seated or Metal-Seated Options – Adaptable to clean service or high-temperature, abrasive applications.

• Manual, Gear, or Actuated Operation – Configurable for remote control or automated process systems.

Advantages of 2PCS Cast Steel Trunnion Mounted Ball Valves

• Ease of Maintenance – Two-piece construction enables quicker internal inspection without complete pipeline removal.

• Lower Torque Requirements – Trunnion-mounted design minimizes seat loading for smoother operation.

• Enhanced Safety – Fire-safe, anti-static, and anti-blowout stem designs meet critical safety standards.

• Wide Size and Pressure Range – Suitable for medium to ultra-high pressure applications, including ANSI 150 to 2500 classes.

A 2PCS cast steel trunnion mounted ball valve delivers a balance of cost efficiency, strength, and maintainability, making it a preferred choice for operators requiring reliable shutoff in critical process systems. With proper material selection and configuration, it can operate effectively across a wide range of industrial conditions, from cryogenic LNG plants to high-pressure oil pipelines.