Armstrong Delta2 FLY Series Manuale utente

IOM 576 v1 –16/07/2020 1 [Tapez ici]

FLY

2 Ways Control Valve

Installation and Operation Manual

IOM-576 v1

IOM 576 v1 –16/07/2020 2 [Tapez ici]

Armstrong

Index

Preface 3

Scope 4

1. Installation 5

2. Recommandations 6

3. Commissioning 8

4. General Maintenance 9

4.1 Preventive and scheduled valve maintenance 9

4.2 Notes and instructions 10

4.3 Components Maintenance 11

5. Repair 22

6. Spare Parts List 24

7. Limited Warranty and Remedy 26

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Preface

For detailed material specifications, options, approximate dimensions and weights, see Armstrong

literature or consult your local Representative.

These control valve are manufactured to the strict standards of our ISO 9001 certified quality

management system. It was tested for compliance with all applicable regulations and guidelines and

fully conforms with all contractually agreed specifications.

To ensure a faultless and reliable operation of this product, please read and observe these installation

and operating instructions before using this product. Failure to comply with these installation and

operating instructions will render the manufacturer’s guarantee and liability null and void.

Unless otherwise agreed, the manufacturer’s General Terms and Conditions of Sale shall apply.

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Scope

These operating instructions shall apply to:

- Two Way Control Valves (PN 6-250, Class 150-1500)

- Three Way Control Valves (PN 10-160, Class 150-900)

- Special valves "Taylor made"

- Valves with fitted Pneumatic or Electrical linear actuator

- Valves with or without accessories

Product Description

Control valves control gases, vapours or liquids and change the flow conditions of a process.

The control valves consists of body and actuator which, depending on the control signal, changes the

position on the closure member (plug) relative to the seat.

Our range also includes a series on peripheral units such as positioners, boosters, filter-regulators,

solenoid valves, limit switches, quick exhaust and special panels on req.

Positioners and solenoid valves can be assembled directly or according to NAMUR

recommendations. Refer to the relevant manufacturer's instruction manual for information regarding

peripheral equipment.

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1.Installation

1.1 "As delivered" status

Valves are generally delivered assembled together with the actuators fitted and calibrated. All valves will

be delivered after a complete test session as required. Parts on the body and actuator

subject to corrosion are protected by a coat of paint.

1.2 Transport

Careful loading and transport arrangements are required to avoid the product suffering impacts and

movements. We recommend the use on a length of rope that is looped around the valve head

underneath the yoke. Promptly touch up any damage to the corrosion protection.

1.3 Storage

Upon arrival on site, store the control valve on a solid base in a closed room. Until its installation, the

valve must be protected from the weather, dirt and other potentially harmful influences. Under no

circumstances should the valve remain in storage for more than 6 months, as the impregnation in the

stuffing box packing evaporates and leaks may develop. Do not remove the plugs protecting the flanges

and the inside of the control valve until it has arrived at its place of installation.

1.4 Preparation for installation into the piping

The valve must be installed and commissioned by qualified personnel who are familiar with the

installation, commissioning and operation of this product and possess the relevant qualifications in their

field of activity. The pressure, leak and operation tests performed in the factory and the quality

management system introduced by the manufacturer ensure that the execution of the control valve

complies with the specifications set forth in the contract, the series number and the fundamental valve

actuator data are found on the rating plate.

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2.Recommandations

The valve must be installed and commissioned by qualified

staff. Qualified staff is defined as personnel who are familiar

with the installation, commissioning and operation of this

product and possess the relevant qualifications in their field of

activity.

A safe access to the valve for installation and maintenance must be ensured by stairs, ramps or

platforms where necessary. Also arranging tools for valve lifting and movement shall be prevented.

Before installation employees must know the pipeline conditions in terms of knowledge of the eventual

hazards like high/low temperature, noise, toxicity, explosion or flammable medium.

Pipeline shall be cleaned by blow-off to avoid that impurities as welding particles can damage valve trim.

2.1 Recommended Installation details

All the above indications are strongly recommended to avoid injuries to people or damages to plant

during installation or maintenance.

Commissioning spares are suggested to avoid the risk that any unexpected damage or mistake during

operations could not permit the valve installation with a consequent huge loss of time and money.

Spare parts shall be requested by supplying the correct Serial Number (reported on valve plate located

on yoke) to Armstrong office for a precise quotation.

Armstrong valves will be supplied complete of a flow direction arrow on valve body casting. Where

process and piping design permit we suggest the installation of:

- Y filter to avoid impurities or suspensions that can damage valve trim parts (mesh to be defined

case by case)

- By-pass valves to permit an easier maintenance. Usually ball or butterfly to stop and a globe for

by-pass modulation

- Sensors or transmitters of Temperature, Pressure or Flow-rate depending on the specific

condition that the Armstrong valve is requested to control.

2.2 Installation sample scheme

The correct use of Armstrong control valve is conditional on the availability of a suitable installation

environment. Here below a Typical Scheme for correct valve installation.

As per standard construction the correct installation of Armstrong control valve shall be done with flow

direction that opens the plug (flow under the seat) and valve should be mounted on horizontal

pipeline with actuator oriented on top of piping as shown.

However, different installations are possible due to special process cases or skid design but

manufacturer shall be informed during quotation stage to include correct accessories and orientation

needed.

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Any deviation from the standard installation not agreed with Armstrong can result in significant control

deviations and in worst case expensive rerouting of the piping will be necessary.

Instrument air supply shall be clean and dry and the temperature of the same should be ambient as per

relative normative indications.

More information for air supply on positioners manual.

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3.Commissioning

When the valve is installed in the piping:

Air Supply Connection

For actuators without positioners, control air is connected directly to the air supply port of the

appropriate actuator housing:

- For direct-acting actuators (fail-open in case of 2-way) to connect to the upper housing

- For reverse-acting actuators (fail-close in case of 2-way) to connect to the lower actuator housing.

The air connections for tandem actuators are the same of single actuators but eventually connected

together.

For actuators with positioners, the air piping is factory installed depending on the required action

direction.

In the field, only the air supply needs to be connected to the positioner or to the air filter regulator.

The threads of the actuator supply ports are 0.25-inch NPT. Other air connections are

available on request.

Suggested Maximum Air Supply for Diaphragm Actuator is 3,5 Barg (52 PSIG) but can be used up to 5,0

Barg.

- In case of Electric Actuators connect according to the wiring diagram in the removable actuator cover

or according to manufacturer's actuator documentation.

- Continuously increase load until operation parameters are reached !

- After the first loading in depressurised and cool conditions, evenly tighten screw connections of

sealing components if required.

- Excessive levels of noise and vibration during operation indicate critical operating conditions and

must be avoided at all costs.

- Keep the operating medium clean and free from external particles.

- The instrument air must conform to at least the lSO 8573-1 class 2 or the requirements of the

accessory manufacturer.

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4.General Maintenance

4.1 Preventive and scheduled valve maintenance

A preventive scheduled check and maintenance on control valves is suggested to have perfect efficiency

from Armstrong control valves.

Any leak or extra friction can reduce process performance and cause eventual delays with not scheduled

maintenances.

For ATEX classified area all maintenences shall follow EN.1127‐1 Directives.

Operation

Suggested Check schedule

Packing Box leaks check &

eventual tighten (Do not

Over-Seal)

Valve to be checked at least once a month to avoid eventual leaks.

- Internally energized packings should be checked every 50.000

cycles or at least 6 months.

If the valve is installed on dirty or severe service cycles will be

reduced to 10.000 and time reduced to 3 months at least.

- Externally energized packings should be checked every 100.000

cycles or at least 1 year of operation. If the valve is installed on

dirty or severe service cycles will be reduced to 20.000 and time

reduced to 6 months at least.

- No spring energized packings should be checked every

10.000 cycles or at least 3 months of operation. If the valve is

installed on dirty or severe service cycles will be reduced to 5.000

and time reduced to 1 month at least.

Packing Box spring

tension check

If packing's spring tension is no more efficient it should be

replaced with a new spring that permit a secure tightness to the

valve stem. This operation is suggested every start-up or every

year at least.

Valve and actuator

stems cleaning in case of

heavy environment

Only in case of dust, dirty or dangerous liquid that could damage

valve. This operation is suggested every start-up or every year at

least.

Pneumatic or Electric actuators

check

Actuators are largely maintenance free. Only suggestion concern to

check actuator diaphragm and stem seal (if fail close) if eventually

leaks. This operation is suggested every start-up or every year at least.

Body Gasket check

Check if body gasket leaks. This operation is suggested every start-

up or every year at least.

Couplings and screwed

parts tightness

Check if any coupling, screwed components of valve or

mounting kit (accessory) are not tighten and fasten enough to

guarantee an efficient and long period of work. This

operation is suggested every start-up or every year at least.

Check at paint

Check if paint is homogeneous and free from oxidation or rusty

components. This operation is suggested every start-up or every

year at least.

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4.2 Notes and instructions

Due to the risk of injury, it is prohibited to work

between the yoke/columns area while the valve is

in operation.

4.2.1 General notes for maintenance

Before to start with any maintenance on the control valves please double check the following points:

- Valve are pressure vessels. Actuator shall not be under pressure during maintenance.

- Upstream pipeline is correctly by-passed or out of service. - Valve temperature is ambient.

- Valve is not contaminated by dangerous substances contained in the process medium or on the

valve surface.

If any of the above mentioned points will not be checked or taken in consideration the risk of injuries or

death is existing. lf the customer performs the repairs himself, these operating instructions and the

respective disassembly/assembly instructions must be followed to the letter and carried out in a

competent manner. Original replacement parts must be used in every case.

4.2.2 Maintenance instructions

Maintenance instructions described below shall be printed and followed step by step from assigned

personnel on plant site during every operation on the control valve.

This operating manual scope is to list all the necessary operations to:

- substitute a Valve part (disassembling the Valve body)

- calibrate/adjust actuator's spring load

- regulate valve stroke

- adjust packing friction

- reverse the valve action

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