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Ames Fire & Waterworks 920GS-15 Stainless Steel Pressure Sustaining Control Valve with Solenoid (On-Off) Feature User Manual

920 series, Model

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01/06

920 Series

Model

8550 Hansen Road

Houston, Texas 77075

(Ph) 713.943.0688

(Fx) 713.944.9445

www.amesfirewater.com

Operation

The AMES Model 920-15 / 620-15 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 Model 920-15 / 620-15 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.

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” or higher 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 gauges to monitor valve inlet and outlet pressure.

• Connect Solenoid to proper electrical source in compliance with local electrical codes.

Other AMES Pressure Relief / Backpressure or Sustaining Control Valves

920 / 620

Pressure Relief / Backpressure or Sustaining Valve

920-01 / 620-01

Pressure Sustaining Valve with Hydraulic Check Feature

920-01-15 / 620-01-15

Pressure Sustaining Valve with Solenoid (On-Off) and Check Feature

925 / 625

Surge Anticipator and Pressure Relief Valve

PRESSURE SUSTAINING VALVE with
SOLENOID (On-Off) FEATURE

920-15
620-15