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Blacoh Sentry Installation & Operation Manual

Pulsation & surge control dampener (chargeable model)
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I N S T A L L A T I O N & O P E R A T I O N M A N U A L
D A M P E N E R
( C H A R G E A B L E M O D E L )
SENTRY dampeners are pressure vessels containing a flexible bladder or bellows inside that separates
an inert pressurized gas (air or Nitrogen) from a system fluid in the lower chamber. Depending on how
dampeners are configured, they are used as P
D
, I
S
or S
ULSATION
AMPENERS
NLET
TABILIZERS
URGE
S
to control pressure fluctuations and spikes in liquid piping systems.
UPPRESSORS
Dampeners work on the principle that volume is inversely proportional to pressure (P1V1=P2V2).
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 fluid and the gas.
When the dampener is sized correctly, properly installed and charged according to the instructions
provided, it will greatly reduce the damaging effects of pressure variations in piping systems and
significantly improve the efficiency of transferring liquids.
All dampeners manufactured by BLACOH use pressure bodies made in the USA to insure quality.
Prior to shipment, each and every dampener is factory tested at design pressure or higher to assure
proper function and leak-free operation.
Foreign language versions available online at:
http://blacoh.com/literature/literature_instructions.aspx

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Summary of Contents for Blacoh Sentry

  • Page 1 ( C H A R G E A B L E M O D E L ) SENTRY dampeners are pressure vessels containing a flexible bladder or bellows inside that separates an inert pressurized gas (air or Nitrogen) from a system fluid in the lower chamber. Depending on how...

  • Page 2: Table Of Contents

    Information in this document is subject to change without notice. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic or mechanical, including photocopying and recording for any purpose other than the purchaser’s personal use without the express written permission of Blacoh Fluid Controls, Inc. BLACOH F...

  • Page 3: Safety Warnings

    NOTE: EC standard EN-13463-1 and EN- 13463-5 (ATEX) require grounding (earthing) on dampeners when the potential for static sparking is present. A grounding point is located marked ATEX specific dampener models. BLACOH F LUID ONTROL...

  • Page 4: Equipment Misuse Hazard

    Temperature, pressure and chemicals affect the appropriate safety equipment when installing, strength plastic, elastomer, metal charging or repairing dampener. components. Many plastics lose strength rapidly temperature increases. Consult factory if in doubt. BLACOH F LUID ONTROL...

  • Page 5: Installation Notes

    After the initial torque of fasteners, bolts will usually lose up to 20% of their strength when re-torqued. Failure to replace both nuts and bolts upon each vessel reassembly will void the product warranty given by Blacoh Fluid Control, Inc. and Blacoh Fluid Control, Inc. will have no liability whatsoever for any vessel failure or malfunction.

  • Page 6: Temperature Limits

    (27°C) (32°C) (38°C) (43°C) (48°C) (54°C) Maximum 150 psi 142.5 psi 135 psi 112.5 psi 97.5 psi 90 psi 75 psi Pressure (10.3 bar) (9.8 bar) (9.3 bar) (7.6 bar) (6.7 bar) (6.2 bar) (5.2 bar) BLACOH F LUID ONTROL...

  • Page 7: Installation & Operation Instructions: Dampener (Chargeable Model)

    150 psi (10.3 bar). If maximum pressure will exceed 150 psi (10.3 bar), dampener must be pre-charged with Nitrogen only. Use a hand pump, Nitrogen tank or air compressor to charge dampener. DO NOT USE OXYGEN. Charging hose kits are available from BLACOH. BLACOH F...

  • Page 8: Installation For Pump Inlet

    Chargeable models do not require an air line connection. Dampener must be pre-charged with compressed air or Nitrogen, using a hand pump, Nitrogen tank/bottle, or compressor. DO NOT USE OXYGEN. Charging hose kits are available from BLACOH. A. Suction Lift/Dampener: When using the dampener in a suction lift application no pre-charge is required. Start the pump to generate working pressure.

  • Page 9: Installation For Surge / Water Hammer

    Nitrogen only. Use a hand pump, Nitrogen tank or air compressor to charge dampener. DO NOT USE OXYGEN. Charging hose kits are available from BLACOH. The dampener must be pre-charged after installation but prior to system operation. The only method to get an accurate pressure charge in the dampener is to charge it prior to system start up or with a closed isolation valve at the dampener inlet.
  • Page 10 OTES BLACOH F LUID ONTROL...

  • Page 11: Manufacturer's Limited Warranty & Return Policy

    Blacoh in Blacoh’s sole discretion: (a) refund of the purchase price; or (b) replacement or repair of the defective part or parts at Blacoh’s facility. This Warranty will be null and void if the product is used in an inappropriate application or if the product has been altered, misapplied, improperly installed, or not properly inspected and maintained.
  • Page 12 Blacoh's acknowledgment or agreement that the warranty claim is justified or correct. If an RMA number is issued by Blacoh, customer should then deliver the product in question to the address specified on the RMA, freight prepaid.

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