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No liquid flow

Liquid pressure too low

Increase the liquid pressure of the liquid storage device

The operating pressure is too low

Increase the air pressure of the valve controller
reach70 psi (4.8 bar)

Needle blockage or damage

Replace the needle

Liquid solidifies inside the valve chamber

Remove the valve and thoroughly clean it

Turn off the adjustment switch

Turn on the adjustment switch counterclockwise

Unstable liquid flow

Unstable liquid pressure

Ensure a constant liquid pressure

The operating pressure of the valve is too low

Raise the valve operating pressure of the valve controller
High to70 psi (4.8 bar)

The opening time of the valve is inconsistent

Check the valve controller to ensure it provides stability
Fixed air pressure output

Gas is trapped in the valve cover

Discharge gas from the valve

After the valve is closed, liquid still drips out and stops after a period of time

Gas is trapped in the liquid shield

Discharge gas from the valve

Leakage at the needle interface

Needle defective

Replace the needle to ensure that it is being usedTESeries Needle