A.R.I. Aquestia D-090 Owner's manual

Installation, Operation & Maintenance
RI.D090.IOM.EN.0523
D-090
Underground Combination Air Valve
The following is a step-by-step narrated description of the A.R.I. D-090 underground combination air valve
installation, operation and maintenance processes.

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IOM A.R.I. D-090
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.................................................................................. 5
2. Installation................................................................................................................................................. 6
2.1 . Installation Recommendations ......................................................................................................................... 6
2.2. Installation Instructions ............................................................................................................................... 7
2.3. Directions for Discharge Outlet..................................................................................................................... 7
3. Operation .................................................................................................................................................. 8
4. Periodic Maintenance ................................................................................................................................. 9
4.1. Preparation ................................................................................................................................................... 9
4.2. Maintaining the D-090 air valve ................................................................................................................. 9
4.3. A.R.I. D-090 –Assembly BOM Table and Drawing .................................................................................. 11
5. Troubleshooting ........................................................................................................................................12

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IOM A.R.I. D-090
Disclaimer
This document is an Installation, Operation and Maintenance (IOM) manual for Aquestia Ltd. The
information enclosed herein contains restricted, privileged, proprietary and confidential information,
intended only for usage by authorized 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; Aquestia 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 Aquestia's prior
written approval. Aquestia makes no commitment to update or keep the information in this document
current and/or up-to- date, and reserves the right to make improvements, alterations and/or
modifications 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 confidential 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 Aquestia 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
Aquestia in writing immediately.
Aquestia assumes that all users understand the risks involved within this Disclaimer and/or in any
document enclosed hereto.
Aquestia 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.
shall NOT assume any liability for any costs, direct or indirect, including loss of income, loss of profits
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 Aquestia for
the product and/or applicable ordinances and/or codes;
•Repairs made in and to the products by personnel not authorized by Aquestia
•Maintenance or repairs using parts or components other than those specified by Aquestia and in their
original condition.
•Operating the products in ways other than the operating procedures described in the manuals provided by
Aquestia, 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, floods, lightning, natural disasters, or acts of God.
Aquestia 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 fitness for any other particular purpose.
Except as provided herein and to the full extent permitted by law, Aquestia 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 certified drawing, procedure or information provided by Aquestia in
reference to a specific customer, site or project. All rights reserved.

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1. Safety Instructions
Safety Instructions - General
1. Aquestia productsalways operateascomponents inalargersystem.Itisessentialforthesystemdesigners,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 qualified 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 qualified operators when installing, operating and
maintaining theproduct.
6. Priortoinstallation, operation,maintenanceorany other typeof action carried out on theproduct, readcarefullythesafety,
installation and operation instructions oftheproduct.
7. Please note:
- Pressurized fluid 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 fluid 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 tonoise.
8. Always open and close valves slowly and gradually.
9. Please note that the maximum working pressure indicated at the product’s specifications table doesn't include pressure
changes caused by water hammer and pressure surge effects. Use the product only according to its designated pressure rate
specifications.
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 productwithout a prior written consenttobeprovidedby Aquestia atAquestia's solediscretion.
11. Please note that Aquestia 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 Aquestia for
the product and/or applicable ordinances and/or codes.
Safety Instructions - 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 off 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.
Safety Instructions - Installation
1. Install the product according to the detailed Installation Instructions provided with it by Aquestia 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 onhazardous
environment sites.
4. Check and re-tighten the bolts connecting the product to the pipeline during commissioning and before operating the
productforthefirsttime.

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Safety Instructions - Commissioning and Operation
1. Readcarefullytheoperation instructions priortoany attempt to operatetheproduct.
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 first
operation procedures exactly as described in this manual.
4. In cases where formal commissioning procedure is required, it should be done by an authorized Aquestia technician prior to
the firstoperationoftheproduct.
Safety Instructions - Maintenance
Before any maintenance or non-regular operation, please read the following:
1. Servicing the product should be done only by qualified technicians for this type of work.
2. Make sure that you know the exact type of the system fluid. Act accordingly and comply with all the relevant standards and
regulations set for handling this type of fluid.
3. Before disconnecting the product from the system and before releasing the residual pressure do NOT:
- loosen or unscrew the product bolts;
- removeanyprotectioncover;
- open any service port.
4. Beforeany maintenanceornon-regularoperation,shutofftheIsolation valveandreleasetheresidualpressure:
A. Forair 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 waste water models, may contain a significant
volume of compressed gas with accumulated energy!
B. Forair valves without a pressure release outlet, slowly unscrew the flange 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’ssafety stickers andreplace anydamaged 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 specific cleaning instructions, the local standards and regulations and without endangering the operator
or thevicinity
10. Manual cleaning of product and/or its components using acid or other chemical agents should be performed in accordance
with the specific 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.
Safety Instructions - Before returning to regular operation
1. Re-assemble any protection covers or protection mechanisms removed during service or maintenanceoperations.
2. Make sure that all thetools, ladders, lifting devices, etc.used during the maintenance procedures are taken away from the
productareaandstored.
3. Remove grease and fat material residues in orderto 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.

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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
Underground Installations
•Underground installations require a venting pipe from the manhole
•Use an angular installation to bypass an obstacle directly above the pipeline.

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IOM A.R.I. D-090
2.2. Installation Instructions
1. Flush the system before installing the air valve to avoid any debris or sharp objects getting into the air
valve.
2. Carefullyremovetheairvalvefromtheshippingpackage.Unload allairvalvescarefullytoa sturdylevel
surface taking care not to dropthem.
3. Air valves fitted with hoist rings should only be lifted and conveyed using these hoist rings.
4. Mount the air valve carefully on the rubber gasket of the main pipe riser’s crown.
5. Place washers on each of the bolts & nuts that connect the air valve flange to the main pipe riser’s
crown.
6. Use ring wrench keys totighten all the bolts and nuts using the crossover method.
7. The closure tightness of the bolts and nuts shall be according to the standard torque for their specific
size.
2.3. Directions for Discharge Outlet
1. Recommended to leave the discharge outlet completely open andunhindered.
2. Avoid directing the discharge outlet opening in the direction of workers, bystanders or animals.
3. Avoid directing the discharge outlet opening in the direction of vulnerable equipment that can be
damaged, such as electrical equipment, unstable structures, etc.

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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. High velocity air does not blow the float shut. Water lifts the float which seals the valve.
At any time during system operation, if the internal pressure of the system falls below the atmospheric
pressure, air enters the system.
The smooth discharge of air reduces pressure surges and other destructive phenomena.
The intake of air in response to negative pressure protects the system from destructive vacuum conditions,
and prevents damage caused by water column separation. Air entry is essential to efficiently drain the system.

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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.
Important: Before performing any work on the air valve, make sure that all workers on site are familiar with the
safety instructions as appear chapter of this document and with all the relevant local and general safety
instructions, standards and work regulations.
4.1. Preparation
Releasing Pressure:
The check valve integrated at the bottom of the air valve box makes it possible to remove the valve under
operating pressure.
If a secondary shut off valve was installed, close it and continue the maintenance procedure listed below
4.2. Maintaining the D-090 air valve
Please refer to the drawings on the next two pages:
1. Disassemble the cover by turning the cover counterclockwise or alternatively unscrew the cover screw
2. Remove the cover together with the bridge and the bridge Rod (#2).
3. Remove the D-040 Air Valve (#3) from the air valve box.
4. Unscrew the body assembled to the bridge rod) (#5).
5. Slid out the Sealing assembly (# 3c), the float (# 3d) and the Clamping stem (# 3e) from the air valve body
6. Wash the Air & Vacuum Assembly parts (# 6) thoroughly under clean running water.
7. Visually examine the Sealing assembly (# 3c) for cracks or tears. Remove and replace, if necessary.
Manually verify the free and unhindered movement of the slots between the Upper and Lower
Components of the Air & Vacuum Assembly (# 6). Clean any debris that might cause interference.
8. Wash the base (# 3g) and the body (# 3b) thoroughly under clean running water.
9. Visually examine the O-Rings (# 3f, # 3h) for cracks or tears. Remove and replace, if necessary.
10. ** Non-Slam version only:
Wash the Non-Slam Component thoroughly under clean running water. Make sure the internal parts are
moving freely, Remove all debris.
11. Slide the Sealing assembly (# 3c), the float (# 3d) and the Clamping stem (# 3e) into the air valve body.
12. Reinstall the body (# 3b) Back to the base (# 3g)

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13. Reconnect the D-040 Air Valve to the air valve box.
14. Reassemble the cover by turning the cover clockwise or alternatively screw the cover screw.
After correctly performed maintenance, when opening the check valve, an audible escape of the air from
the housing should be evident, indicating that the valve was closed tightly.
The following is a drawing of the D-090 Main Components:
2
3
3
6
5

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4.3. A.R.I. D-090 –Assembly BOM Table and Drawing
Parts List D-90
Part
Material
1
Valve Box Assembly
1a
Cover
Polypropylene
1b
Air Valve Box
PVC
1c
Insulation Cover
Aluminum Coated Foamed PE
1d
Base
Reinforced Nylon
1e
Drainage Connector
Polypropylene + Acetal
1f
Check Valve
Acetal + NBR + Stainless Steel
1g
Adaptor
Stainless Steel 316
2
Bridge & Rod Assembly
2a
Bridge Assembly
Reinforced Nylon
2b
Tightening Rod
Stainless Steel 304
2c
Lock Pin
Stainless Steel 304
3
D-40 Air Valve Assembly
3a
One-Way or NS Check
Valve(Optional)
Acetal + NBR + Stainless Steel
3b
Body
Reinforced Nylon
3c
Sealing assembly
Stainless Steel + R.N + EPDM
3d
float
Polypropylene
3e
Clamping stem
Reinforced Nylon
3f
O-ring
BUNA-N
3g
Base
Reinforced Nylon
3h
O-ring
NBR
4
Flange Assembly (Optional)
4a
O-ring
NBR
4b
Flange
Reinforced Nylon

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5. Troubleshooting
Symptom
Possible Causes
Solution
The Valve is leaking
•Contamination of deposits and foreign
objects can affect the function of the valve.
•Incorrect assembly after inspection.
•Insufficient operating pressure.
•Carry out a thorough inspection of
the valve and all its components.
See the Maintenance chapter of
this document.
•Make sure that all components of
the valve are installed correctly.
Pay special attention to the correct
assembly of the interior of the
valve.
•The valve is designed for a working
pressure of 0.2 to 16 bar. Make sure
that the minimum sealing pressure
was reached at the installation site
of the valve.