STEP 6
Slowly open downstream isolation valve to establish flow through
the system.
STEP 7
With a demand for flow on the system, the valve can now be ad-
justed for the proper flow rate. This requires a meter to
read the
flow that the valve is providing.
STEP 8
While reading the meter register, adjust the Rate of Flow Control:
Turn the adjustment screw IN, clockwise, to increase the flow rate
regulated (See Figure 2A).
Turn the adjustment screw OUT, counterclockwise, to reduce or
lower the flow rate regulated (See Figure 2B).
Setting the Rate-of-Flow Control Pilot
Counterclockwise to REDUCE
Flow Rate Limit
Clockwise to INCREASE
Flow Rate Limit
2A
2B
STEP 9
Opening Speed Flow Control Adjustment: The Opening speed
flow control allows free flow into the cover and restricted
flow out
of the cover of the main valve.
If valve opening is too slow, turn the adjustment screw OUT,
counterclockwise, increasing the rate of opening (See Figure 3B).
If valve opening is too quick, turn the adjustment screw IN, clock-
wise, decreasing the rate of opening (See Figure 3A).
STEP 10
Closing Speed Needle Valve Adjustment: The closing speed nee-
dle valve regulates fluid pressure into the main valve cover cham-
ber, controlling the valve closing speed.
If the valve closes too slowly, turn the adjustment screw OUT,
counterclockwise, increasing the rate of closing.
STEP 11
Actuate the solenoid to close the main valve, checking that the
main valve closes.
Counterclockwise to INCREASE
the rate of opening
Clockwise to DECREASE
rate of opening
3A
3B
Figure 3
Flow Control
Figure 2
CP14-1 Rate-of-Flow Control Pilot
4 IOM-A-ACV-950-15_650-15 2115
EDP# 1917072
© 2021 Watts
IOM-A-ACV-950-15_650-15 2115
EDP# 1917072
© 2021 Watts 5
