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8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com

01/05

Classic Series

NON-SURGE CHECK VALVE

(6” and Larger)

F118-4 (Globe)

F1118-4 (Angle)

Operation

The Watts ACV Non-Surge Check Valve is designed to control pipeline surges caused by ﬂow reversal

by slowly opening and closing at separate adjustable rates. The valve opens when upstream pressure is

greater than downstream pressure. When upstream pressure is greater than downstream pressure, the

Adjustable Opening Speed Control allows ﬂuid out of the main valve cover chamber, providing a controlled

rate of opening. When a pressure reversal occurs and downstream pressure becomes higher than upstream

pressure, the two Adjustable Closing Speed Controls allows the higher downstream pressure to enter the

main valve cover chamber, providing a controlled rate of closure.

NOTE: A maximum pipeline velocity of six feet-per-second is recommended when installing this type of

check valve. When pipeline velocities exceed six FPS, consideration should be given to adding a Watts

ACV Model F116 Pressure Relief Valve or Model F116-52 Combination Surge Anticipator and Pressure

Relief Valve to the system.

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 gauges to monitor valve inlet and outlet pressure.

Other Watts ACV Control Valves

F116 / F1116 Pressure Relief Valve

F116-52 / F1116-52 Surge Anticipator and Pressure Relief Valve

F118-3 / F1118-3 Non-Surge Check Valve (4” & smaller)

M513-5 / F1513-5 Pump Control Valve

M513-AK / F1513-AK Pump Control Valve with High Capacity Pilot System

M513-6 / F1513-6 Deep Well Pump Control Valve

M513-14 / F1513-14 Deep Well Pump Control Valve with Pressure Relief Feature

F113-21 / F1113-21 Pump Control Valve

Classic Series 1

Sommario

Pagina 1 - Classic Series

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com01/05RClassic SeriesNON-SURGE CHECK

Modelli collegati F118-4

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Sommario

Modelli collegati F118-4

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