Pneumatic Three-Way Ball Valve (Single-Acting 0-90-180)
Single-acting three-way valve with 0-90-180 three-position switching.
Product overview
The pneumatic three-way ball valve supports multi-directional switching at 0°, 90° and 180°. It covers DN15~200 and multiple pressure classes under Chinese, American and Japanese standards. Body and seat materials are selectable, and the raised mounting pad accepts a complete automation accessory package directly. The three-way passage diverts, mixes and switches flow, allowing one valve to handle multiple flow paths for inlet and outlet pipeline applications across various industries.
Double-acting and single-acting spring-return pneumatic drives are available, with automatic return on air loss in the single-acting version. It supports on/off shut-off and proportional control and is widely used in chemical, HVAC, petroleum and water-treatment process pipelines. One valve handles switching between multiple media streams, simplifying pipeline layout and reducing purchase and installation costs.
Core technology and operating parameters
| Model | Q644, Q645 |
| Nominal diameter | DN15~200 mm |
| Pressure | 1.6, 2.5, 4.0MPa; 150LB, 300LB; 10K |
| Dimensional standards | Chinese, American and Japanese standards |
| Valve body material | Carbon steel (WCB), stainless steel (CF8, CF8M) |
| Seat material | Polytetrafluoroethylene (F), poly-p-phenylene (P), hard alloy (Y) |
| Action type | Double-acting, single-acting (spring-return) |
| Control mode | Two-position shut-off (on/off), modulating |
| Optional accessories | Solenoid valve, valve positioner, limit switch, air preparation FRL unit, manual override |
Core construction and design advantages
Three-way flow path for diverting, mixing and switching flow
Supports 0°/90°/180° multi-angle directional control
Full DN15~DN200 range with multiple pressure ratings
Flanges compatible with Chinese, American and Japanese standards
Choice of WCB carbon steel or CF8/CF8M stainless steel body
Three seat materials for corrosion-resistant, high-temperature and wear-resistant service
Choice of double-acting or single-acting spring-return drive
Supports on/off shut-off and proportional control
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