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ARI.D26 2-3.IOM.EN.0824
Installation, Operation & Maintenance
D-26 2"-3" Polymeric
Combination Air Valve
The following is a step-by-step narrated description of the A.R.I. D-26 combination air valve installation,
operation and maintenance processes.
The D-26 air valve is designed for systems that operate within the pressure and temperature framework of
the model's specifications table. Please consult Aquestia for products designed for other hazardous liquids
systems.
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Related Manuals for Aquestia A.R.I. D-26
Summary of Contents for Aquestia A.R.I. D-26
- Page 1 D-26 2”-3” Polymeric Combination Air Valve The following is a step-by-step narrated description of the A.R.I. D-26 combination air valve installation, operation and maintenance processes. The D-26 air valve is designed for systems that operate within the pressure and temperature framework of the model's specifications table.
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Page 2: Table Of Contents
IOM A.R.I. D-26 3” Table of contents 1. Safety Instructions ............................4 Safety Instructions - General ........................... 4 Safety Instructions - Handling ..........................4 Safety Instructions - Installation ..........................4 Safety Instructions - Commissioning and Operation .................... 5 Safety Instructions - Maintenance .......................... 5 Safety Instructions - Before returning to regular operation .................. - Page 3 Aquestia technicians. If you are not a qualified technician, you must not take any action in reliance upon this document, unless otherwise permitted in writing by Aquestia Aquestia has made every effort to ensure that this document is accurate;...
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Page 4: Safety Instructions
10. Use the product only for its intended use as designed by Aquestia. Any misuse of the product may lead to undesired damages and may affect your warranty coverage. Please consult with Aquestia prior to any non-regular use of this product and make no change or modification to the product without a prior written consent to be provided by Aquestia at Aquestia's sole discretion. -
Page 5: Safety Instructions - Commissioning And Operation
In order to achieve maximum performance and smooth operation of the product, it is crucial to perform the startup and first operation procedures exactly as described in this manual. In cases where formal commissioning procedure is required, it should be done by an authorized Aquestia technician prior to the first operation of the product. -
Page 6: Installation
IOM A.R.I. D-26 3” 2. Installation Important: Before performing any work on the air valve make sure that all workers on site are familiar with the safety instructions and the relevant local and general safety instructions and work regulations. 2.1. Installation Recommendations Single Air Valve on an Isolating Valve at 45°... -
Page 7: Conventions And Measurements
IOM A.R.I. D-26 3” 2.2. Conventions and Measurements This paragraph presents and explains the terms and measurements used for the Installation process. D = Diameter of pipeline Isolation d = diameter of riser Valve H = Height of riser on the pipeline (Measured from crown of pipeline) •... -
Page 8: Installation Instructions
IOM A.R.I. D-26 3” 2.3. Installation Instructions 1. Flush the system before installing the air valve to avoid any debris or sharp objects getting into the air valve. 2. Carefully remove the air valve from the shipping package. Unload all air valves carefully to a sturdy level surface taking care not to drop them. -
Page 9: Operation
IOM A.R.I. D-26 3” 3. Operation The Air & Vacuum component, with the large orifice, discharges air at high flow rates during the filling of the system, and admits air into the system, at high flow rates, during system’s drainage and at water column separation. -
Page 10: Periodic Maintenance
IOM A.R.I. D-26 3” 4. Periodic Maintenance Please note that the periodic maintenance of the air valve is an integral part of the proper pipeline maintenance regime; it should be maintained at least once a year in accordance with the quality and composition of the fluid in the system. -
Page 11: First Stage Maintenance
IOM A.R.I. D-26 3” 4.3. First Stage Maintenance 1. SAFETY WARNING: Prior to maintenance, perform the following steps: a. Shut the isolating valve underneath the air valve. b. Open the Tap (27) to release pressure and drain the liquid from the valve body. Leave it open. -
Page 12: Second Stage Maintenance
IOM A.R.I. D-26 3” 4.4. Second Stage Maintenance 1. SAFETY WARNING: Prior to maintenance, perform the following steps: a. Shut the isolating valve underneath the air valve. b. Open the Tap (27) to release pressure and drain the liquid from the valve body. - Page 13 IOM A.R.I. D-26 3” e. Insert the 2-pronged adjustable spanner wrench into the two holes in the Stopper and screw the Float Assembly into the bottom side of the new Sealing Assembly. f. Attach the lower Disc Arm to the Sealing Assembly by inserting the Bolt and Washer into the holes of the Sealing Assembly and tightening the Nut.
- Page 14 IOM A.R.I. D-26 3” A.R.I. D-26 3” Air valve – Assembly BOM Table and Drawing Threaded Plug Cover NS Component Disk Arm Air & Vacuum Seal Disc Bushing Washer Bolt Air & Vacuum Seal Air Release Seal Air Release Seal Seat Air &...
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Page 15: Troubleshooting
IOM A.R.I. D-26 3” 5. Troubleshooting Symptom Possible Causes Solution a. Dirt particles stuck in the orifice. a. Follow the instructions for: 1. Leaking from the air valve First Stage Maintenance outlet b. Torn Rolling Seal b. Follow the instructions for: Second Stage Maintenance Non-slam disc doesn’t move freely in...
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