Watts LFM1115 - Manual

○ 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
Options & Accessories
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
LEAD FREE
*
Mustang Series
ES-ACV-SB-LFM115_LFM1115
Standard Components
(3)
(3)
(3)
(2)
(2)
(1)
(1)
Standard 3" & Smaller
Standard 4" & Larger
Optional All Sizes (3)
(2)
(1)
Schematic
• Throttles to reduce high upstream pressure to
constant lower downstream pressure
1
X
X X
Y/FC
P/L
3
2
CLOSES VALVE
OPENS VALVE
FLOW
(AOS)
LFM115 (Globe) LFM1115 (Angle)
Pressure Reducing Control Valve
Operations
1 – Main Valve (Single Chamber)
2 – Pressure Reducing Control
3 – Fixed Orifice
• Reducing setpoint is adjustable
The Watts ACV Pressure Reducing Control Valve is designed to automatically reduce a fluctuating higher
upstream pressure to a constant lower downstream pressure regardless of varying flow rates. It is con-
trolled by a normally open, pressure reducing pilot designed to: 1) Open (allowing fluid out of the main
valve cover chamber) when downstream pressure is below the adjustable setpoint, and 2) Close (allowing
fluid to fill the main valve cover chamber) when downstream pressure is above the adjustable setpoint. A
decrease in downstream pressure causes the valve to modulate toward an open position, raising down-
stream pressure. An increase in downstream pressure causes the valve to modulate toward a closed
position, lowering downstream pressure.
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.