STEP 7
Opening Speed Flow Control Adjustment: The Opening speed
needle valve restricts flow out of the cover of the main valve.
If the main valve is opening too slowly turn the adjustment screw
OUT, counterclockwise, increasing the rate of opening (See Figure
2B).
If the main valve is opening too quickly, turn the adjustment screw
IN, clockwise, decreasing the rate of opening (See Figure 2A).
STEP 6
Actuate the solenoid to open the main valve, checking that the
main valve opens.
Step 8
Actuate, either electrically or manually, the solenoid to closed
position to check that the main valve closes.
STEP 9
Closing Speed Needle Valve Adjustment: The closing speed
needle valve regulates fluid pressure into the main valve cover
chamber, controlling the valve closing speed.
If the main valve is opening too quickly, turn the adjustment screw
OUT, counterclockwise, increasing the rate of closing.
4 IOM-A-ACV-930-01-19_630-01-19 2115
EDP# 1917086
© 2021 Watts
IOM-A-ACV-930-01-19_630-01-19 2115
EDP# 1917086
© 2021 Watts 5
Counterclockwise to INCREASE
the rate of opening
Clockwise to DECREASE
rate of opening
2A
2B
Figure 2
Flow Control
