PID control valve actuatorSpecially designed for flow control requirements of water, steam, or 50% ethylene glycol and other media in HVAC systems.
Product Features:
Equal percentage traffic characteristics.
There are three control modes: switch control, floating point control, or continuous adjustment.
Design working pressure for DN15~50: 2.0Mpa; Design working pressure for DN65~150: 1.6Mpa.
Working pressure difference: 0.35Mpa.
Preparation work:
Tool preparation: Allen wrench (3mm, 8mm, etc.), open-end wrench (13mm, 24mm, etc.), locking pin, sealant, etc.
Valve status: Ensure that the valve is in the fully open position and confirm that the valve stem scale is aligned.
Connection between actuator and valve body:
Mechanical fixation:
Loosen the connecting screw between the actuator and the valve body, insert the valve stem into the actuator shaft hole, and adjust the height to align the connecting piece.
The snap on actuator needs to be aligned with the valve stem slot and fixed with a pin or bolt inserted.
Locking scale: Rotate the actuator dial to the target position (such as scale 3 corresponding to valve body 5), and use a wrench to lock the nut to prevent loosening.
Electrical/Pneumatic Debugging:
Electric actuator:
After wiring, power on and switch the zero position through the function keys (if the reverse valve needs to be set to the upper zero position) to perform automatic calibration of the stroke.
Check if the indicator ring (red/blue) is tightly attached to the pointer to ensure accurate valve position feedback.
Pneumatic actuator: It is necessary to connect the pneumatic circuit and adjust the locator to test the correspondence between signal pressure and stroke.
Final inspection:
Manual operation: Verify whether the actuator action is flexible and there is no jamming phenomenon.
Sealing: Threaded joints can be coated with sealant to prevent leakage (especially in pneumatic systems).