Watts M1110-14 - Manual

02/09
M
ustang
s
eries
Standard Components
Options & Accessories
Schematics
12541 Gulf Freeway • Houston, Texas 77034 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
910 link
M110-14 (Globe)
M1110-14 (Angle)
Operations
ON-OFF FLOAT CONTROL VALVE
(4” and Smaller)
1 – Main Valve (Single Chamber)
2 – On-Off Float Control
3A – High Level Adjustment Stop
3B – Low Level Adjustment Stop
1
X
Y/FC
2
3A
3B
P/L
X
CLOSES VALVE
OPENS VALVE
FLOW
○ X – Isolation Cocks
○ FC – Flo-Clean Strainer
○ Y – Y-Strainer (Replaces Flo-Clean)
○ ACS – Adjustable Closing Speed
(Replaces Fixed Orifice)
○ AOS – Adjustable Opening Speed
○ P – Position Indicator
○ L – Limit Switch
• Opens when float reaches low level stop
• Closes when float reaches high level stop
• Low and High Level stop collars are adjustable
Standard 3” & Smaller
Standard 4” & Larger
Optional All Sizes (3)
(2)
(1)
(3)
(3)
(3)
(3)
(2)
(2)
(1)
The 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.