Industry Insights
Product knowledge, selection, installation, maintenance and industry insights.
Industry Insights · 75
Disassembly Steps for Double-Acting Pneumatic Actuators
Introduction A double-acting pneumatic actuator consists of two air chambers, a central piston, and a rack output shaft, using the pressure difference between the two chambers to produce an output torque that turns the shaft, opening and closing the valve. It has a simple structure, responds quickly, and provides high torque, and is widely used in the automated pipeline valve…
Components to Inspect in Pneumatic Actuator Overhaul
Introduction Pneumatic actuator maintenance is usually divided into two categories: minor repair and major overhaul. Minor repair means "treating the specific problem", taking targeted action according to the actual fault the valve shows; a major overhaul means dismantling the actuator and checking and restoring it component by component. Whether a major overhaul is done well depends on whether these components…
Pneumatic Actuator Maintenance Cycle and Grease Types
Introduction A pneumatic actuator plays a key role in an automated control system, and its operating stability directly affects the accuracy of valve action and system safety. The core of keeping it stable over the long term comes down to two things: setting the cycle by duty conditions and choosing grease by duty conditions. This article explains point by point…
Why Pneumatic Actuators Come Loose from Positioners
Introduction In automatic control systems, to achieve accurate positioning of a pneumatic actuator, it is often used together with a valve positioner: the positioner receives the controller's output signal and then outputs a proportional air signal to drive the actuator. But in industrial production, the actuator and the positioner gradually come loose from each other because of vibration, loosening and…
How to Test the Airtightness of a Pneumatic Actuator
Introduction Airtightness is the most basic "health indicator" of a pneumatic actuator. Once it leaks, at best the action slows down and air consumption rises; at worst it won't open or close to position or even cannot move at all. The purpose of airtightness testing is very direct — to check whether any leakage exists at the various connection points.…
What to Test on a Pneumatic Valve Before Delivery
Introduction From parts to a finished product, a pneumatic valve goes through assembly and adjustment, and finally a key process — performance testing. If testing is not done well before delivery, the problems are carried onto the user's pipeline: won't close tightly, won't travel to position, insufficient service life. This article breaks the factory testing of a pneumatic valve into…
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