User guide

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com
01/05
R
Stainless Series
ON-OFF FLOAT VALVE
(4” and Smaller)
S110-14 or S6110-14 (Globe)
S1110-14 or S61110-14 (Angle)
s110-14 four link
Operation
The Watts ACV On-Off Float Control Valve is designed to open fully or close drip-tight as commanded by
the Float Control Pilot. The Float Pilot may be either valve or remote mounted. The valve closes drip tight
when water level reaches the adjustable high-level setpoint, and opens fully when water level is below the
adjustable low-level setpoint, allowing a calculated “draw-down” of water level to increase tank circulation.
The On-Off Float Pilot commands the routing of fluid and pressure into and out of the cover chamber of
the main valve. When water level reaches the adjustable high-level setpoint, the Float Pilot connects the
cover chamber of the valve to upstream pressure, closing the valve drip tight. The valve remains closed as
water level decreases. When water level reaches the adjustable low-level setpoint, the Float Pilot connects
the cover chamber of the valve to atmosphere (wet drain), opening the valve fully. High and low levels
are separately adjustable by positioning stop collars on the float rod(s) at desired opening and closing
setpoints.
If desired, the on-off action of the valve can be “reversed” by modifying the hydraulic connections of the On-
Off Float Pilot.
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” and larger 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 gauge to monitor valve inlet pressure.
• Provide adequate drain for cover chamber discharge. Consult “Valve Cover Capacity” chart on appropriate
main valve Engineering Bulletin.
• If On-Off Float Pilot is remotely mounted it should be field connected with 3/8” minimum copper tubing in
accordance with factory piping schematic.
• Float Pilot, Rods, and Ball should be mounted in a field installed “stilling well” for protection against
surface turbulence and interference.
• Additional 12” Float Rods available. Consult Factory.
Other Watts ACV Float Control Valves
S110-10 / S6110-10 Modulating Float Control Valve
S110-13 / S6110-13 Modulating Float Control Valve with Pressure Sustaining Feature
S110-AS / S6110-AS Modulating Float Control Valve with Solenoid (On-Off) Feature
S110-18 / S6110-18 On-Off Float Valve with Pressure Sustaining Feature