Blacoh AODDampener Installation And Operation Manual
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Blacoh AODDampener Installation And Operation Manual

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Installation and Operation Manual
The AODDampener™ is designed specifically to handle the large pressure pulses that air operated double diaphragm
pumps produce. The automatic valve on the AODDampener adjusts the charge in the air chamber to compensate for
varying conditions in the discharge piping system, maximizing the reduction in pulsation. When sized correctly and properly
installed the AODDampener will greatly reduce the damaging effects of pressure variations and improve the efficiency of
transferring fluids.
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.

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Summary of Contents for Blacoh AODDampener

  • Page 1 The AODDampener™ is designed specifically to handle the large pressure pulses that air operated double diaphragm pumps produce. The automatic valve on the AODDampener adjusts the charge in the air chamber to compensate for varying conditions in the discharge piping system, maximizing the reduction in pulsation. When sized correctly and properly installed the AODDampener will greatly reduce the damaging effects of pressure variations and improve the efficiency of transferring fluids.

  • 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. AODDAMPENER™...

  • Page 3: Safety Warnings

    (MAWP) specified on dampener serial tag or marked on dampener. If missing, DO NOT use dampener without ▪ AODDampener models are designed to operate with compressed air only. Other compressed gases have not been consulting distributor or factory for maximum pressure rating.

  • Page 4: General Information

    A Blacoh back pressure valve may be required downstream of dampener, except when dampener is used as an inlet stabilizer for the inlet side of the pump. It is recommended that a Blacoh pressure relief valve be installed in all pump systems to ensure compliance with pressure limits on system equipment.

  • Page 5: Installation & Operation Instructions: Aoddampener™ Models

    (Figure 1). Step 2 — Air Line Connection AODDampener models have an automatic valve with two NPT ports fitted in the non-wetted housing. Supply compressed air to the dampener using a 1/4” or larger air line to ensure adequate air supply to the dampener.

  • Page 6: Maintenance And Repair

    If a diaphragm failure occurs, it is possible for the pumped product to enter the dampener air chamber and be expelled from the dampener exhaust. It is recommended that the exhaust be plumbed to a safe area or to a Blacoh SPILLSTOP™ unit if the dampener location and/or the nature of the pumped product presents a hazard.
  • Page 7 7. To remove the shaft from the backup diaphragm, secure the shaft in a vise with soft jaws to protect the shaft from nicks and scratches. Hold the used backup diaphragm with two hands and gently turn it counterclockwise to unscrew it from the shaft. Discard used backup diaphragm. AODDAMPENER™...
  • Page 8 Install O-Rings with O-Ring Installation Tool: It is highly recommended that the AODDampener O-Ring Installation Tool be used to install O-rings in the automatic valve to ensure proper placement on reassembly. The tool is engineered to properly install O-rings one at time in the correct position and is available in three sizes to fit 1”...
  • Page 9 Pull the shaft part way out of the automatic valve. Compressed air should stop flowing. If air flow does not stop, one or more O-rings are installed in the wrong groove. e. Remove the compressed air line from the dampener, and the non-wetted housing from the vise. AODDAMPENER™...
  • Page 10 ▪ AOD-10, 1” inlet model, (10) 3/8” bolts − 17 ft-lb / 23 Nm ▪ AOD-15 and AOD-20, 1.5” and 2” inlet models, (12) 7/16” bolts − 30 ft-lb / 40 Nm ▪ AOD-30, 3” inlet model, (24) 7/16” bolts − 27 ft-lb / 36 Nm AODDAMPENER™...

  • Page 11: Exploded View

    Exploded View Item Description Wetted Housing Non-wetted Housing Bolt Washer PTFE Diaphragm Backup Diaphragm Air Control Shaft O-Ring Backup Plate Retaining Ring Plug Muffler Automatic Valve AODDAMPENER™...

  • Page 12: Manufacturer's Limited Warranty & Return Policy

    Manufacturer’s Limited Warranty & Return Policy Details regarding warranty and return policy are available on Blacoh’s website at www.Blacoh.com PROUDLY MANUFACTURED IN THE USA Blacoh Headquarters 601 Columbia Ave, Bldg D, Riverside CA 92507 USA 951.342.3100 | www.Blacoh.com | Sales@Blacoh.com...

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