Manual

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com
01/05
R
Classic Series
RATE-OF-FLOW VALVE
f114 link
Operation
The Watts ACV Rate-of-Flow Control Valve is designed to automatically limit flow rate to a constant, adjustable,
maximum. It is controlled by a normally open, differential control pilot designed to: 1) Open (allowing fluid
out of the main valve cover chamber) when the differential pressure across the orifice plate is below the
adjustable set point, and, 2) Close (allowing fluid to fill the main valve cover chamber) when the differential
pressure across the orifice plate is above the adjustable set point. A decrease in differential pressure causes
the valve to modulate towards an open position, increasing flow rate. An increase in differential pressure
causes the valve to modulate towards a closed position, decreasing flow rate.
NOTE: Please specify desired flow rate prior to ordering.
Installation Guidelines
• Prior to installation, flush line to remove debris.
• Install valve horizontally “in line” (cover facing UP), so flow arrow matches flow through the line. Avoid
installing valves 6” or large vertically. Consult factory prior to ordering if installation is other than
described.
• Install inlet and outlet isolation valves. NOTE: When using butterfly valves, insure disc does not contact
control valve. Damage or improper valve seating may occur.
• Provide adequate clearance for valve servicing and maintenance.
• Install pressure gauges to monitor valve inlet and outlet pressure.
Other Watts ACV Rate-of-Flow Control Valves
F114-1 / F1114-1 Rate-of-Flow Control Valve with Solenoid (On-Off) Feature
F114-2 / F1114-2 Rate-of-Flow Control Valve with Pressure Reducing Feature
F114-3 / F1114-3 Rate-of-Flow Control Valve with Hydraulic Check Feature
F114-8 / F1114-8 Rate-of-Flow Control Valve with Pressure Sustaining Feature
F114 (Globe)
F1114 (Angle)