Counterclockwise to INCREASE
the rate of opening
Clockwise to DECREASE
rate of opening
STEP 7
Opening Speed Flow Control Adjustment: The Opening speed
needle valve restricts flow out of the cover of the main valve.
If valve opening is too slow, turn the adjustment screw OUT, coun-
terclockwise, increasing the rate of opening (See Figure 5B).
If valve opening is too quick, turn the adjustment screw IN, clock-
wise, decreasing the rate of opening (See Figure 5A).
STEP 8
Closing Speed Control Adjustment: The closing speed needle
valve regulates fluid pressure into the main valve cover chamber,
controlling the valve closing speed. If valve closing is too slow, turn
the adjustment screw OUT, counterclockwise, increasing the rate
of closing.
Setting the Delayed Opening
Control
STEP 9
Adjust the tank draw-down Delayed Opening Control by turning
the adjustment screw IN, clockwise, to increase, or OUT, counter-
clockwise, to decrease opening delay (See Figure 6B) .
5A
5B
Figure 5
Flow Control
6A
6B
4 IOM-ACV-127-11_6127-11 2115
EDP# 1917059
© 2021 Watts
IOM-ACV-127-11_6127-11 2115
EDP# 1917059
© 2021 Watts 5
Counterclockwise to DECREASE
opening delay
Clockwise to INCREASE
opening delay
Figure 6
CP15 — Delayed Opening Control
