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DO NOT USE OXYGEN - EXPLOSIVE!

 

Protect against freezing temperatures. Never 

pre-charge below 50% of maximum system pressure.

EXPLOSION OR RUPTURE HAZARD. 

relief valve must be installed to prevent 

pressure in excess of local code requirement or maximum 

working pressure designated in the Product Manual, whichever is 

less. At least once every 3 years or if discharge is present, a 

licensed contractor should inspect the pressure relief valve and 

replace if corrosion is evident or the valve does not function.

 

FAILURE TO INSPECT THIS VALVE AS DIRECTED COULD 

RESULT IN UNSAFE PRESSURE BUILD-UP WHICH CAN 

RESULT IN PRODUCT FAILURE, SERIOUS INJURY OR 

DEATH AND/OR SEVERE PROPERTY DAMAGE AND VOID 

THE PRODUCT WARRANTY.

Pre-Installation

1.  Visually inspect the Surge-Trol

®

 for any damage. If damage 

exists return product for replacement.

2.  Remove air cap.
3.  For applications with pump start-up creating water hammer, 

adjust the factory pre-charge setting to 15% below 

 

static pressure.

4. For applications with surge issues created by pump shut 

down, adjust the factory pre-charge setting to 50% below 

static pressure.

5.  Replace and tighten cap on air valve.

 

If increasing the pre-charge pressure 

above 55 psig, the following steps must 

be followed:
a. Tank must be connected to the system with isolation  

valve open.

b. System must be pressurized slightly higher than the 

pre-charge setting of the tank.

c.  Isolation valve then needs to be closed.
d.  The pre-charge pressure of the tank can now be increased 

to the recommended high pressure setting.

e.  Bring system up to pressure, and then open the isolation 

valve to the tank.

Failure to follow these instructions could result in 

damage to the bladder and void all warranties.

Installation

1. The Surge-Trol should be installed after the pump and/

or check valve assembly, on the supply side of the system 

isolation valves.

2.  The Surge-Trol should be installed as close to the pump as 

possible in surge applications. 

3.  Once the Surge-Trol is installed and the pre-charge adjusted 

properly, check for any leaks. Make repairs if necessary.

Maintenance

1.  A licensed professional should check the complete system, 

including the Surge-Trol, yearly and more frequently as the 

system ages.

Operation

1.  The Surge-Trol is designed to provide surge protection as well 

as provide a cushion to prevent water hammer and column 

separation depending on its application.

2.  Water temperature must not exceed 210°F or fall below 35°F.
3.  The factory pre-charge setting is 25 PSIG and should only be 

adjusted at the time of the installation.

4.  System velocity shall not exceed 22 fps.

Warranty

Surge-Trol Models: One (1) Year Limited Warranty

Visit www.amtrol.com for complete warranty details.

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY

IMPORTANT GENERAL SAFETY INFORMATION - 

ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.

Typical Installation

Pump

Check Valve

System

Valve

Do not reduce pipe size 

from tank to system.

To System

SURGE-TROL

Tank

© 2019 Worthington Industries Inc. 

Part #: 9017-140 (01/19)

One or more features of this product are covered by U.S. patents, visit www.amtrol.com/patents for more information. 

1400 Division Road, West Warwick, RI  USA 02893

T: 800.426.8765  

www.amtrol.com

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