Ball valves pneumatic

Ball valves are used in many applications in machine and plant construction and in the process industry. A drilled ball serves as a blocking body and the flow is enabled or prevented by means of a 90° rotation.

In addition to manual or electrical operation, ball valves can also be automated pneumatically. Compressed air is available in almost all industrial plants and is used directly for pneumatic applications. Wherever electrical power is not available, ball valves can be operated easily and cost-effectively.

The function of a pneumatic ball valve is based on the use of compressed air to actuate the rotary actuator. Depending on the design, actuation is either via a single-acting system (with spring return) or a double-acting system in which the opening and closing process is controlled by air pressure. This allows the flow to be precisely regulated or switched off.

Ball valves with pneumatic rotary actuators work reliably and efficiently in simple and demanding processes, regardless of the temperature and ambient conditions. Valves with single-acting pneumatic rotary actuators close or open reliably even in the event of power or system failure. Thanks to this safety function, the ball valve automatically returns to the defined initial position in the event of an air failure, which is particularly advantageous in safety-relevant applications.

Intelligent electro-pneumatic positioners can be combined with the valves as accessories. In this way, they can be used as control or metering valves. The speed of the pneumatic actuator can be continuously controlled with throttle valves. In addition to positioners and throttle valves, TRI-MATIC has Namur solenoid valves, TRI-Namur accessories or TRI-SWITCH boxes for controlling pneumatic ball valves in its range of accessories.

TRI-MATIC offers pneumatic ball valves in various sizes and configurations. The selection of the right size depends on the medium, pressure, temperature and the desired degree of automation:

In aggressive environments, PTFE-coated or completely stainless steel pneumatic actuators are available. Even for the pneumatic connection of the rotary actuators, we are happy to supply screw fittings and pneumatic hoses in various designs and materials.

Thanks to the robust design and the absence of electrical components, the low-maintenance, robust ball valve requires significantly less maintenance. This makes the pneumatic ball valve an ideal solution for automated processes where reliability and a long service life are required.