Instruction Manual

SENTRY™ dampeners are pressure vessels containing a exible bladder or bellows inside that separates an inert pressurized gas
(air or Nitrogen) from a system uid in the lower chamber. Depending on how dampeners are congured, they are used as Pulsation
Dampeners, Inlet Stabilizers or Surge Suppressors to control pressure uctuations and spikes in liquid piping systems.
Dampeners work on the principle that volume is inversely proportional to pressure (P
1
V
1
=P
2
V
2
). Compressed air or Nitrogen (never
Oxygen) is introduced into the non-wetted side of the dampener. The gas charge is contained by the bladder or bellows preventing
contact between the system uid and the gas.
When the dampener is sized correctly, properly installed and charged according to the instructions provided it will greatly reduce the
damaging e󰀨ects of pressure variations in piping systems and signicantly improve the e󰀩ciency of transferring liquids.
All dampeners manufactured by BLACOH use pressure bodies made in the USA to ensure quality. Prior to shipment, each
and every dampener is factory pressure tested to assure proper function and leak-free operation.
Visit Blacoh.com for literature in multiple languages.
Installation and Operation Manual
Chargeable Dampeners
Metal and Plastic Models to 300 PSI