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Pneumatic Three Way Control Valve Product Information
Pneumatic three way control valve is one type of regulating valve with pneumatic diaphragm actuator, which has two inlets or outlets. When one outlet is open, the other one will be closed, and then alternate. Three way regulating valve can be used as two phase regulation and simple proportion regulation. Sometimes, three way control valve can be used instead of 2pcs two way valve and 1pc three way pipe connector. Flowspec Luokai can manufacture and supply the pneumatic three way control valve according to standard of GB/T 12221-2005 with sizes of 3/4″ ~ 8″ (DN20~DN200mm). Contact us today. Get the better prices. 30 years of experience. Great after-sales service.
1. FEATURES
- S shaped flow port, linear flow characteristic.
- Small pressure drop loss, big flow capacity.
- Compact structure, wide adjustable range.
- Small noise, little cavitation corrosion.
- Excellent regulation performance, accurate flow coefficient.
3. STANDARDS
- Design & manufacturing: GB/T 12221-2005
- Flanged ends: GB/T 9113.1-2000, ANSI 16.5, JIS B2201
- Face to face: GB/T 12221-2005
- Inspection & testing: GB/T 13927-2000
2. TECHNICAL SPECIFICATIONS
- PN1.6~PN6.4Mpa, Class 150LB, 300LB, 600LB, JIS 10K, 16K, 20K
- Size: 3/4″ ~ 8″ (DN20~DN200mm)
- Materials: carbon steel (WCB), stainless steel 304(CF8), stainless steel 316(CF8M)
- Flow characteristic: linear, equal percentage
- Intrinsic error: <±1%
- Hysteresis:<±1%
- Cv ratio: 50:1
- Leakage class: ANSI B16.104 class IV, class VI, class II
3. STANDARDS
- Thermal power plant
- Petroleum
- Chemical industry
- Pharmacy
- Chemical fertilizer
- Hydropower station
- Textile
- Printing & dyeing
- Oil & gas
Why Choose Flowspec Luokai
45+ Years Experience
Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.
Global Certifications
ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.
OEM Custom Solutions
Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.
Worldwide Delivery
Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.
Our Service Promise
Strict Quality Control
Every valve tested to API 598, EN 12266 before shipment
Timely Global Delivery
Reliable logistics to 5 continents with secure packaging
OEM & Custom Design
Tailored material, size, pressure and actuation to your specs
Dedicated After-Sales
Technical support and service throughout product lifecycle