SENTRY® FAQ's
 "What is the difference between a pulsation dampener, surge suppressor, accumulator, inlet stabilizer and standpipe?"
These designations, with the exception of standpipe, are used to describe a pressure vessel with an elastomeric bladder which separates nitrogen or other compressed gas charge from the process liquid. Their use and location in a liquid handling system generally determines the name designation. A standpipe is simply a pipe with a cap on one end, and does not separate a gas charge
from the product being pumped.
 "What sizes are available?"
Blacoh has dampeners available from stock in sizes from 2 cubic inches (.023 L) to 10 gallons (37L). Sizes up to 100 gallons (378L) are available upon special order
"What is the maximum pressure rating available in Blacoh dampeners?"
Units with maximum pressure ratings up to 4000 PSI (276 BAR) are available from stock depending upon the specific design and material of the unit. Pressure ratings up to 25,000 PSI (1724 BAR) are available upon special order.
"What is the minimum and maximum temperature limit?"
The materials of construction of the unit determine temperature limitations. Operating temperatures can be -40°F (-40°C) to over 400°F (205°C). When consulting the material specifications for temperature ranges, be sure to check the bladder material and the wetted and non-wetted housing material. If you are unsure of the proper component materials, or you need
assistance, please Contact Us.
CAUTION: All materials lose strength as temperature rises.
 "How do I size a dampener, suppressor or stabilizer?"
Proper sizing is based upon several variables. The Blacoh sizing formulas allow you to input the specifics of your application to calculate the proper size. You can contact your local distributor or Blacoh for any sizing and application assistance you require. You can also request a CD with complete sizing
formulas.
"What is the difference between the Automatic, Adjustable, Chargeable and Stabilizer air controls on SENTRY units?"
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