Watts F1116-31 - Manual

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com
01/05
R
Classic Series
F116-31 (Globe)
F1116-31 (Angle)
Operation
The Watts ACV Pressure Sustaining and Solenoid (On-Off) Control Valve is designed to permit flow when
upstream pressure is above the adjustable setpoint of the control pilot, and throttle toward closed when
upstream pressure falls below the adjustable setpoint. It is controlled by a normally closed control pilot
designed to: 1) Open (allowing fluid out of the main valve cover chamber) when upstream pressure is above
the adjustable setpoint, and, 2) Close (allowing fluid to fill the main valve cover chamber) when upstream
pressure is below the adjustable setpoint. An increase in upstream pressure causes the valve to modulate
toward an open position. A decrease in upstream pressure causes the valve to modulate toward a closed
position.
The Solenoid Pilot will either open to allow regulating action, or close the valve drip-tight when energized.
Specify energize to open or close the Main Valve and voltage PRIOR to ordering.
When the valve is located “in line” connecting two distribution zones, the valve acts as a Pressure
Sustaining Control Valve. When pressure in the upstream zone falls below the pilot setting, the valve
modulates toward a closed position, sustaining pressure in the upstream zone. The valve will close, if
necessary, until upstream pressure is above the pilot setting. The valve should be specified to include the
optional opening speed control and position indicator when used for Pressure Sustaining applications.
PRESSURE SUSTAINING VALVE
with SOLENOID (On-Off) FEATURE