Pneumatic Three-Way Ball Valve
L-port/T-port flow path for diverting or mixing.
Product overview
The pneumatic three-way flanged ball valve is an on/off switching valve covering DN15~DN200 and pressure conditions under Chinese, American and Japanese standards. Various body and seat materials are available, and the raised mounting pad accepts automation accessories directly. L-port/T-port three-way passages divert, mix and switch flow, allowing one valve to replace several two-way valves and simplify pipeline layout.
Double-acting and single-acting spring-return pneumatic actuators are available, with automatic return on air loss in the single-acting version and two-position shut-off control. It is widely used for pipeline switching in chemicals, HVAC, water treatment and petroleum product transport. A smooth, low-resistance flow path, rapid opening and closing, and stable sealing meet the switching needs of industrial automated pipelines.
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), poly-p-phenylene (P), stainless steel (CF8, CF8M) |
| Seat material | Polytetrafluoroethylene (F), hard alloy (Y) |
| Action type | Double-acting, single-acting (spring-return) |
| Control mode | Two-position shut-off (on/off) |
| 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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