Amtrol D-70 Leaflet

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.

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 any 

leakage. Make repairs if necessary.

1.  A qualified professional should check the complete system,

including the Diatrol, yearly and more frequently as the system 

ages.

1. The Diatrol is 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.

Diatrol models: One (1) Year Limited Warranty

© 2014 AMTROL Inc. 

Part #: 9017-130 (01/14)

1400 Division Road, West Warwick, RI  USA 02893  

T: 800.426.8765    F: 800.293.1519