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Electric / Pneumatic Ball Valve Switch (on-off) , Control Valve (4~20mA control) , Q641 Pneumatic on-off Ball Valve (with solenoid valve, limit switch)
Pneumatic ball valve switches are composed of high-precision pneumatic actuators and precision-cast ball valves. They are mainly divided into two types: pneumatic soft-seal ball valves and pneumatic metal-sealed ball valves. These valves feature a compact design, small size, reliable operation, low flow resistance, excellent sealing performance, easy maintenance, simple installation, and strong adaptability.
When paired with a limit switch, solenoid valve, pressure-reducing valve, and a gas source of 0.4–0.7 MPa, the pneumatic ball valve can achieve on-off control. It can also output two passive contact signals to control the valve's opening or closing. The O-type pneumatic ball valve is particularly suitable for media that are viscous, contain particles, or have fibrous properties. These valves are widely used in industrial automatic control systems across sectors such as petroleum, chemical processing, laboratory equipment, light industry, high-pressure systems, pharmaceuticals, and paper production, serving both long-distance centralized control and local control applications.
The AT pneumatic actuator features a symmetrical gear rack and dual-piston mechanism, ensuring quick and stable operation. It offers high accuracy and significant power output, allowing for reverse rotation by simply adjusting the piston position. The actuator is made of aluminum alloy, and both single-acting and double-acting models share the same cylinder and side cover. A complex spring group allows for easy adjustment of the number of springs, enhancing safety and flexibility. Two separate bolts on either side make it easy to adjust the ON/OFF positions, and extending the bolt enables full travel adjustment. The multifunctional position indicator provides local display and complies with standards such as VID/VIE3845 and NAMUR. It supports the installation of accessories like limit switch boxes, electric positioners, and location transducers. The air inlet conforms to the NAMUR standard, enabling direct installation of NAMUR-standard solenoid valves. The composite bearing, piston guide ring, and output shaft bearing at the back of the gear ensure metal-to-metal rubbing protection, significantly increasing service life. All fastening components are made of stainless steel, offering corrosion resistance.
**Technical Specifications**
| Nominal Diameter (DN) | DN15–300 |
|------------------------|-----------|
| Nominal Pressure (PN) | 1.0, 1.6, 2.5, 4.0, 6.4 MPa |
| Test Pressure | |
| Strength | 1.5, 2.4, 3.75, 6.0, 9.6 MPa |
| Seal | 1.1, 1.76, 2.75, 4.4, 7.04 MPa |
| Low Pressure Gas Test | 0.5–0.7 MPa |
| Suitable Media | Water, oil, steam, Nitric Acid (≤200°C), Acetic Acid (≤200°C) |
This detailed technical information ensures the product meets international standards such as CE, SGS, and ISO. It is manufactured in Tianjin, China, and is packaged in wooden cases or cartons for safe shipping. The model number is Q641 Pneumatic On-Off Ball Valve, and it is branded under Tianjin U-ideal Instrument. The HS Code for this product is 848140000.