Choose a pneumatic valve by the process duty first, then confirm instrument-air conditions, actuator output, accessory scope and the position required after a failure. Air-powered actuation does not by itself define the valve body, seat, control signal or shut-off performance.
The range includes different valve types and both switching and modulating applications. Confirm each product's configuration and distinguish the valve, actuator, positioner, solenoid and air-treatment accessories in the quotation.
For modulating duties, compare pneumatic and electric control valve actuation; for capacity checks, use the Cv/Kv sizing guide.
State the available supply pressure and capacity, expected pressure losses, air quality and site conditions. The actuator and accessory requirements determine the suitable supply. A static pressure reading alone does not show whether the assembly has enough air during movement.
No. The final position depends on actuator action, springs, valve construction and the air/accessory circuit. A double-acting assembly is not automatically fail-closed or guaranteed to hold position. Specify the required actions after air, power and control-signal failure separately.
Not by default. A modulating package may use a suitable positioner and feedback arrangement; a switching package may use different accessories. Specify the control input, feedback, communications, solenoid and power requirements individually.
Provide the medium, temperature, working and shut-off pressures, size, connections, body/seat materials, switching or modulating duty, frequency, air supply, control/feedback requirements and failure position. Include hazardous-area, enclosure and maintenance requirements where applicable.
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