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Pre-Installation

1.  Visually inspect the Diatrol

®

 for any damage. If damage exists 

return product for replacement.

2.  Adjust pre-charge to equal 10% below system pressure.

3.  Replace and tighten plastic cap on air fitting.

Installation

1.  The Diatrol should be installed as close to the offending fixture 

or source of water hammer as possible.

2.  Once the Diatrol is installed, check the CWS line for leaks. 

Make repairs if necessary.

Maintenance

1. A licensed professional should check the complete system, 

including the Diatrol, yearly and more frequently as the  

system ages.

Operation

1. The Diatrol should be installed in the line as close to the 

offending fixture as possible. Its sealed-in air pre-charge 

prevents water from entering it until the system pressure 

exceeds the pre-charge pressure. A properly pressurized tank 

will only allow a small volume to enter its bladder under normal  

flow conditions.

2.  When a sudden valve closure occurs, the resulting pressure 

surge travels back from the valve to the bladder-type shock 

suppressor forcing the bladder to expand into the air cushion.

3. The shock is absorbed by the compressing of the air. After 

absorption of the shock, the system water pressure and the 

air chamber pressure equalize at the static pressure level.

4.  Water temperature is not to exceed 240°F or fall below 35°F.

Warranty

Diatrol 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.

© 2019 Worthington Industries Inc. 

Part #: 9017-130 (06/19)

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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