ARI Valve 025-D Installation Manual
D025.IOM.ENG02
Installation, Operation & Maintenance
COMBINATION AIR VALVE
MODEL D-025
The following is a step by step narrated description of the A.R.I. D-025 industrial combination air valve
installation, operation and maintenance processes.
The D-025 air valve is designed for systems that operate within the pressure and temperature framework
of the model's specications table. Please consult A.R.I. for products designed for other hazardous liquids
systems.
IOM D-0252
TABLE OF CONTENTS
1. Safety Instructions ........................................................................................................ Page 3
2. Installation ....................................................................................................................... Page 6
3. Operation ........................................................................................................................ Page 8
4. Troubleshooting ........................................................................................................... Page 8
5. Periodic Maintenance ................................................................................................. Page 9
6. Assembly BOM Table and Drawing ........................................................................ Page 21
7. Ordering Replacement Parts .................................................................................... Page 22
8. Limited Warranty .......................................................................................................... Page 24
Disclaimer
This document is an Installation, Operation and Maintenance (IOM) manual for A.R.I. Flow Control Accessories Ltd. (A.R.I.) products. The information enclosed herein
contains restricted, privileged, proprietary and condential information, intended only for usage by authorized A.R.I. technicians. If you are not a qualied technician,
you must not take any action in reliance upon this document, unless otherwise permitted in writing by A.R.I.
A.R.I. has made every eort to ensure that this document is accurate; A.R.I. disclaims liability for any inaccuracies or omissions that may have occurred.
All the procedures, drawings, pictures and/or any other information provided in this document are presented as general information only; they can be altered,
removed or changed without A.R.I.'s prior written approval. A.R.I. makes no commitment to update or keep the information in this document current and/or up-todate, and reserves the right to make improvements, alterations and/or modications to this document and/or to the products described in this document, at any
time without providing any notice with respect thereto. Nothing in this Disclaimer derogates in any way whatsoever from the condential nature of any document
enclosed hereto, including for avoidance of doubt, any mistake or clerical error or other error. None of the procedures provided in this Disclaimer and/or in any
document enclosed hereto may be used in any form or by any means without the prior written consent from A.R.I. If you received this Disclaimer and/or in any
document enclosed hereto in error or by mistake or if this Disclaimer and/or in any document enclosed hereto is not intended for you, please notify A.R.I. in writing
immediately.
A.R.I. assumes that all users understand the risks involved within this Disclaimer and/or in any document enclosed hereto.
A.R.I. accepts/assumes no liability whatsoever, whether caused by: accessing and/or relying upon this Disclaimer and/or in any document enclosed hereto including
without limitation any links, procedures or materials.
A.R.I. shall NOT assume any liability for any costs, direct or indirect, including loss of income, loss of prots and/or goodwill, legal actions and/or damages of any kind
whatsoever including any, damages accidents, equipment damage or bodily injury resulting from and/or related to any of the following:
• product has not been duly installed and thereafter maintained in strict compliance with its designated Maintenance Instructions and/or any other installation
and operation manuals provided by A.R.I. for the product and/or applicable ordinances and/or codes;
• Repairs made in and to the products by personnel not authorized by A.R.I.
• Maintenance or repairs using parts or components other than those specied by A.R.I. and in their original condition.
• Operating the products in ways other than the operating procedures described in the manuals provided by A.R.I., or resulting from not following the
cautionary remarks and warnings in the product manual.
• Improper storage, workplace conditions and environmental conditions which do not conform to those stated in the Product manual.
• Fires, earthquakes, oods, lightning, natural disasters, or acts of God.
A.R.I. does not warrant and hereby disclaims any express or implied warranties that the product will work properly in environments and applications other than its
original design purpose, and makes no warranty and representation, either implied or expressed, with respect to the quality, performance, merchantability, or tness
for any other particular purpose.
Except as provided herein and to the full extent permitted by law, A.R.I. shall not be responsible and/or liable for direct, special, incidental or consequential damages
or loss resulting from any breach of the above or under any other legal theory.
This document does not replace any certied drawing, procedure or information provided by A.R.I. in reference to a specic customer, site or project.
All rights reserved.
IOM D-0253
1. SAFETY INSTRUCTIONS
General
1. A.R.I. products always operate as components in a larger system. It is essential for the system designers, installers, operators
and maintenance personnel to comply with all the relevant safety standards.
2. Installation, operation or maintenance of the product should be done only by qualied workers, technicians and/or
contractors using only good engineering practices, complying with and observing all conventional safety instructions in
order to minimize risk and/or danger and/or hazard to workers, the public or to property in the vicinity in accordance with all
relevant local standards.
3. Extra safety considerations should be taken with hot and hazardous liquids or in hazardous environments' applications to
avoid bodily/physical harm and damage to public or private property.
4. All individuals installing operating and/or handling the products including all workers should at all times adhere to the
occupational safety and health (OSH) instructions and wear safety helmets, goggles, gloves, and any other personal safety
equipment required by the local standards and regulations.
5. Use only appropriate standard tools and equipment operated by qualied operators when installing, operating and
maintaining the product.
6. Prior to installation, operation, maintenance or any other type of action carried out on the product, read carefully the safety,
installation and operation instructions of the product.
7. Please note:
- Pressurized uid and/or gas may be discharged from the product without prior warning. Make sure that the product's outlet
port is not directed toward electrical elements (pumps) or people.
- The pressurized uid and/or gas that can be discharged from the product may create high noise levels. Take this into
consideration when installing the product in areas sensitive to noise.
8. Always open and close valves slowly and gradually.
9. Please note that the maximum working pressure indicated at the product’s specications table doesn't include pressure
changes caused by water hammer and pressure surge eects. Use the product only according to its designated pressure rate
specications.
10. Use the product only for its intended use as designed by A.R.I. Any misuse of the product may lead to undesired damages and
may aect your warranty coverage. Please consult with A.R.I. prior to any non regular use of this product and make no change
or modication to the product without a prior written consent to be provided by A.R.I. at A.R.I.'s sole discretion.
11. Please note that A.R.I. shall NOT assume any liability with respect to any damage losses and/or expenses caused to any person
and/or property whatsoever unless the product has been duly installed and thereafter maintained in strict compliance with its
designated maintenance Instructions and/or any other installation and operation manuals provided by A.R.I. for the product
and/or applicable ordinances and/or codes.
Handling
1. Shipping and handling the product must be done in a safe and stable manner and in accordance with the relevant standards
and regulations.
2. Storage should be in the original delivery crates or cases. Storage should be o the ground in a clean, dry indoor area.
3. For lifting and positioning the product, use only approved lifting equipment operated by authorized employees and
contractors.
4. Prior to the installation visually verify that the product was not damaged during shipment to the installation site.
IOM D-0254
Installation
1. Install the product according to the detailed Installation Instructions provided with it by A.R.I. and according to the description
given in this manual.
2. The user should install a manual Isolation Valve under the product's inlet port.
3. In all installation sites, the user should enable good visibility and verify that the work and auxiliary equipment used are
done in accordance with the relevant local authorized standards. Extra safety considerations should be taken on hazardous
environment sites.
4. Check and re-tighten the bolts connecting the product to the pipeline during commissioning and before operating the
product for the rst time.
Commissioning and Operation
1. Read carefully the operation instructions prior to any attempt to operate the product.
2. Observe the safety stickers on the product and never perform any operation contradicting the instructions given.
3. In order to achieve maximum performance and smooth operation of the product, it is crucial to perform the startup and rst
operation procedures exactly as described in this manual.
4. In cases where formal commissioning procedure is required, it should be done by an authorized A.R.I. technician prior to the
rst operation of the product.
Maintenance
Before any maintenance or non-regular operation, please read the following:
1. Servicing the product should be done only by qualied technicians for this type of work.
2. Make sure that you know the exact type of the system uid. Act accordingly and comply with all the relevant standards and
regulations set for handling this type of uid.
3. Before disconnecting the product from the system and before releasing the residual pressure do NOT:
- loosen or unscrew the product bolts;
- remove any protection cover;
- open any service port.
4. Before any maintenance or non-regular operation, shut o the Isolation valve and release the residual pressure:
A. For air valves with a pressure release outlet, slowly open the pressure release plug or the ball valve and make sure that all
pressure is released. Please note that some air release valves, especially the wastewater models, may contain a signicant
volume of compressed gas with accumulated energy!
B. For air valves without a pressure release outlet, slowly unscrew the ange bolts until all the pressure is released from the
valve.
5. Make sure the air valve is empty of all liquid prior to commencing maintenance.
6. Remove the product from the line only after ensuring that internal pressure has been released.
7. Place warning signs around the work area as required by the local standards and procedures.
8. Inspect the product’s safety stickers and replace any damaged or faded sticker.
9. Manual cleaning of the product and/or its components using high water pressure or steam should be performed in
accordance with its specic cleaning instructions, the local standards and regulations and without endangering the operator
or the vicinity
10. Manual cleaning of product and/or its components using acid or other chemical agents should be performed in accordance
with the specic cleaning instructions, the relevant safety instructions for using that chemical as given by its supplier, the local
standards and regulations and without endangering the operator or his vicinity.
11. For products used in potable water systems, if it is required to disinfect the product, do so according to the local water
authority standards and regulations before putting the product into service.
IOM D-0255
Before returning to regular operation
1. Re-assemble any protection covers or protection mechanisms removed during service or maintenance operations.
2. Make sure that all the tools, ladders, lifting devices, etc. used during the maintenance procedures are taken away from the
product area and stored.
3. Remove grease and fat material residues in order to avoid slipping.
4. In order to return the product to regular operation, follow the First Start-up Operation instructions as detailed in your user
manual.
IOM D-0256
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° to Air Valve outlet
Two Air Valves on a shared Isolating Valve. Air Valves outlets
face outward and the Isolating Valve at 45° to Air Valve outlets
Two Air Valves on an Air Trap with separate Isolating Valves. Air
Valve outlets face outward and the Isolating Valves at 45° to Air
Valve outlets
Underground Installations
⋅ Underground installations require a venting pipe from the
manhole
⋅ Use an angular installation to bypass an obstacle directly
above the pipeline.
IOM D-0257
2.2. Conventions and Measurements
This paragraph presents and explains the terms and
measurements used for the Installation process.
D = Diameter of pipeline
d = diameter of riser
H = Height of riser on the pipeline
(measured from crown of pipeline)
• For pipelines up to 12" (300mm) in diameter (D), the Air Trap
diameter (d) should be the same as the pipeline diameter.
• For larger pipelines of up to 60" (1500mm) in diameter (D), the
Air trap diameter (d) should be 60% of the pipeline diameter.
Isolation valve
Air trap riser
d
• For larger than 60" (1500mm) pipelines (D), the Air trap diameter
(d) should be 35% of the pipeline diameter.
• The Air trap length (H) should allow easy access to the air valve
from below and should be at least 6" (150mm).
H
D
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.
3. Air valves tted with hoist rings should only be lifted and conveyed using these hoist rings.
4. Install an isolating valve below the air valve, connected by a Riser to the crown of the pipe.
5. Mount the air valve carefully on the rubber gaskets of the isolating valve.
6. Place washers on each of the bolts & nuts that connect the air valve ange to the isolating valve ange.
7. Tighten all the bolts and nuts using the crossover method.
a. The closure tightness of the bolts and nuts shall be according to the standard torque for their specic size.
b. Use ring wrench keys for the closing and opening of all bolts of the air valve (including the ange bolts).
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