Two-piece pneumatic ball valves are industrial valves actuated by pneumatic actuators that regulate pipeline flow through 90° rotation, primarily used in petroleum, chemical, power generation, and pulp/paper industries. Featuring a two-piece body construction, an internal sphere rotates about its axis to control media flow. These valves offer minimal flow resistance, broad media compatibility (water, acids, natural gas, etc.), and high-pressure/vacuum resilience.
Operation requires only 90° pneumatic rotation with low torque to achieve bubble-tight shutoff. The full-bore design provides an unrestricted flow path with pressure drop equivalent to straight pipe sections. While traditionally used for on/off service, modern designs have evolved to incorporate throttling and flow control capabilities.
Key Features:
Compact structure facilitating operation/maintenance
Compatibility with standard media (water, solvents, acids, natural gas)
Suitability for harsh services (oxygen, hydrogen peroxide, methane, ethylene)
Availability in monolithic or modular body configurations
Advantages
Negligible Flow Resistance
Flow coefficient matches equivalent straight pipe length
Compact & Lightweight Design
Simplified structure with minimal footprint
Reliable Sealing Performance
Polymer seating materials ensure zero leakage, suitable for vacuum systems
Rapid Quarter-Turn Operation
90° rotation from full-open to full-closed position, enabling remote automation
Ease of Maintenance
Modular design with field-replaceable seals
Erosion-Resistant Sealing
Sphere/seat sealing surfaces isolate from media flow in full-open/closed positions
Universal Applicability
Size range: Millimeters to meters; Pressure range: High-vacuum to high-pressure services
Specification
Piece Ball Valve design according to ASME B16.34
Threads according to ANSI B1.20.1, BS 21/2799, DIN 259/2999, ISO 228
Inspection and test API 598
Material: CF8
Pressure Rating:Temperature Range: -196°C~600°C
Applications
Industrial Sector
Petroleum & Natural Gas
Crude oil transmission pipelines
Refineries
Natural gas processing plants
Chemical Industry
Control of corrosive media flows (acids, alkalis, organic solvents)
Water Treatment
Flow and pressure regulation for:
• Potable water
• Wastewater
• Reclaimed water
Power Generation Industry
Boiler feedwater systems
Steam pipelines
Cooling water circuits
Civilian Applications
Residential Heating
Hot water circulation control for:
• Radiators
• Underfloor heating systems
Gas Supply Systems
Shutoff control for:
• Residential gas stoves
• Water heaters
Fire Protection Systems
Flow regulation in:
• Fire hydrants
• Sprinkler systems
