Full Port Ductile Iron Single Chamber Valve
• Designed for Tank Fill and Discharge applications
• Opens when Tank head pressure is below setpoint
• Closes when Tank head pressure is above setpoint
• Opens for return flow when upstream system pressure is below
Tank head pressure
• Solenoid (On-Off) Feature provides electrical override of Tank Fill
function
• Tank Sense Line is field installed (to Tank or standpipe)
• Adjustable Opening and Closing Speed
• Altitude set-point is adjustable
Operation
The Two-Way Flow Altitude Automatic Control Valve (ACV) with
Solenoid Override Feature is designed to open, allowing flow into
a reservoir or elevated storage tank (tank fill), and close drip tight
when high water level is achieved. The valve will also open allowing
return flow (tank discharge), when upstream pressure falls below
reservoir head pressure. The Altitude Pilot remotely senses static
tank head pressure (water level) through a field installed sensing line,
and directs pressure into and out of the cover chamber of the 3-way
Accelerator Pilot. When the cover of the Accelerator Pilot is pres-
surized, the main valve cover chamber is vented downstream (dry
drain) or to atmosphere (wet drain), causing the valve to open fully.
When the cover of the Accelerator Pilot is de-pressurized, the main
valve cover chamber is connected to upstream pressure, causing
the valve to close drip tight.
As water level decreases, static tank head pressure falls below the
adjustable setpoint of the Altitude Pilot, causing it to pressurize the
cover of the Accelerator Pilot, opening the valve. As water level
increases, static tank head exceeds the adjustable setpoint of the
Altitude Pilot, causing it to depressurize the cover of the Accelerator
Pilot, closing the valve drip tight. Valve opening and closing speeds
are separately adjustable. The Position Indicator with Air Bleed
Petcock allow for visual indication of valve position, and allows easy
venting of air entrapped in the main valve cover chamber.
When upstream pressure falls below reservoir head pressure, a
Check Valve installed in the pilot control system "Return Flow Line"
opens, connecting the main valve cover chamber to the upstream
pressure zone, causing the valve to open allowing reservoir pressure
to return into the upstream pressure zone (Tank Discharge).
The Solenoid Override Feature provides remote electrical, or local
manual closure of the valve. When the Solenoid Pilot is energized,
it vents the cover of the Accelerator Pilot, causing the main valve
to close regardless of water level. Engaging the Solenoid Manual
operator simulates power to the solenoid, manually closing the main
valve. Disengaging the Solenoid Manual operator returns the valve to
normal on-off service.
Specify Tank height and Solenoid voltage PRIOR to ordering.
P(L)
1
X
X
X
X
Y/FC
8
4
7
2
(Tank Sense Line)
4
CLOSES VALVE
OPENS VALVE
FLOW
3
5
6
Options and Accessories
Standard Components
{
FC – Flo-Clean Strainer
{
Y – Y-Strainer (Replaces Flo-Clean)
{
L – Limit Switch
1 – Main Valve (905GD - Single Chamber)
2 – Model 22-1 Accelerator Control
3 – Altitude Control
4 – Check Valve
5 – Adjustable Opening Speed
6 – Adjustable Closing Speed
7 – 3-Way Solenoid
8 – 3-Way Ball Valve
P – Position Indicator
X – Isolation Cocks
2
ES-A-ACV-LF960GD-15-17 2115
© 2021 Watts
Two-Way Flow Altitude Control Valve with Solenoid (On-Off) Override Feature
Features
LEAD FREE
*
The information contained herein is not intended to replace the full
product installation and safety information available or the experi-
ence of a trained product installer. You are required to thoroughly
read all installation instructions and product safety information
before beginning the installation of this product.
NOTICE
* The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Series LF960GD-15-17
