Ball Valve Manufacturer in India

A ball valve uses a quarter-turn rotary element to provide rapid isolation with a compact flow path. Ball valve construction can be configured for different isolation duties through the selection of ball support, bore arrangement, seating system, body construction and actuation. Speciality Valve manufactures ball valves for hydrocarbon, gas, steam, water and compatible process services, with the configuration selected according to pressure, temperature, bore, materials and connection requirements.

Ball Valve Configurations:

The ball support arrangement is one of the most important design choices.

• Floating Ball Valve: In a floating ball valve, the ball is supported by the seats rather than fixed by trunnions. Differential pressure moves the ball toward the downstream seat to support shut-off. This arrangement is common in smaller and moderate-size applications.

• Trunnion Mounted Ball Valve: The ball is mechanically supported by trunnions, reducing pressure-induced seat loading and operating torque compared with a floating-ball arrangement in suitable larger-bore or higher-pressure applications.

• Forged Steel Ball Valve: Forged construction is available for compact valve designs and selected demanding pressure-temperature duties within the specified valve rating.

• Fully Welded Ball Valve: A welded body construction can be selected for certain buried or pipeline installations where minimizing bolted body joints is desirable.

• Double Block and Bleed Ball Valve: Uses an isolation and bleed arrangement to isolate the required section and provide a means of venting or verifying pressure between the sealing elements, according to the selected DBB design.

• Jacketed Ball Valve: Provides a heating or cooling jacket around the body for compatible temperature-sensitive process services.

Floating vs Trunnion Ball Valve:

Ball Valve Bore and Seat Selection:

Bore configuration affects flow capacity and pressure loss:

• Full Bore: Provides a passage close to the connecting pipe bore and is commonly selected where low flow restriction and pipeline access are important.

• Reduced Bore: Uses a smaller internal flow passage and may reduce valve weight and cost where the resulting pressure loss and flow capacity are acceptable.

• Soft Seat: Suitable for compatible services requiring tight shut-off within the temperature and chemical limits of the seat material.

• Metal Seat: Used for selected higher-temperature, erosive or demanding services where soft seating may not be appropriate.

Ball Valve Configuration Range:

Ball Valve Materials and Grade Selection:

Actual grades depend on the valve construction, pressure-temperature conditions and approved material specification.

Ball Valve Features for Isolation:

For demanding isolation duties, the specification may include blowout-resistant stem construction, anti-static provisions, cavity-pressure management, fire-tested/fire-safe construction where specified and emergency sealant injection where required by the selected design.
These features should not be treated as universal across every ball valve. They are configuration and service dependent.

Ball Valve Applications:

• Pipeline Isolation: Full-bore shut-off on compatible hydrocarbon and gas transmission pipelines.

• Compressor Stations: Isolation around compressor equipment and associated piping.

• Metering Systems: Isolation upstream and downstream of compatible metering or measurement sections for operation and maintenance.

• Tank Farms: Isolation at storage-tank inlet and outlet connections.

• Gas Processing: Process isolation around separators, treatment equipment and associated gas piping.

• Loading Systems: Rapid isolation of compatible loading, unloading and transfer lines.

Ball Valve Standards and Testing:

• API 608 – Metal ball valves within its applicable scope

• API 6D – Pipeline valves within its applicable scope

• ISO 17292 – Metal ball valves for petroleum, petrochemical and allied industries

• ASME B16.34 – Pressure-temperature ratings, materials, design, testing and marking where applicable

• API 607 / API 6FA – Fire testing where required and applicable to the selected valve/design

Share the process medium, pressure class, operating temperature, required bore and actuation method with Speciality Valve for ball valve selection and quotation.