Spirax Sarco HV3 Manuale utente

IM-P060-04 CMGT Issue 3

1. Safety information

2. General product information

3. Installation

4. Commissioning

5. Operation

6. Maintenance

7. Spare parts

Printed in GB

0601050/3

HV3

Stop Valve

Installation and Maintenance Instructions

IM-P060-04

CMGT Issue 3

IM-P060-04 CMGT Issue 3

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Safe operation of these products can only be guaranteed if they are properly installed,

commissioned, used and maintained by qualified personnel (see Section 1.11) in compliance with

the operating instructions. General installation and safety instructions for pipeline and plant

construction, as well as the proper use of tools and safety equipment must also be complied with.

1.1 Intended use

Referring to the Installation and Maintenance Instructions, name-plate and Technical Information

Sheet, check that the product is suitable for the intended use/application. The products comply

with the requirements of the Pressure Equipment Directive (PED) and fall within the category

'SEP'. It should be noted that products within this category are required by the Directive not to

carry the mark.

Product Group 1

Gases

Group 2

Gases

Group 1

Liquids

Group 2

Liquids

HV3

DN15 - DN25 -SEP -SEP

DN32 - DN40 -SEP -SEP

DN50 - 1 - SEP

i) The product has been specifically designed for use on steam, compressed air,water and other

industrial fluids that are in Group 2 of the above mentioned Pressure Equipment Directive.

ii) Check material suitability, pressure and temperature and their maximum and minimum values.

If the maximum operating limits of the product are lower than those of the system in which it

is being fitted, or if malfunction of the product could result in a dangerous overpressure or

overtemperature occurrence, ensure a safety device is included in the system to prevent such

over-limit situations.

iii) Determine the correct installation situation and direction of fluid flow.

iv) Spirax Sarco products are not intended to withstand external stresses that may be induced

by any system to which they are fitted. It is the responsibility of the installer to consider these

stresses and take adequate precautions to minimise them.

v) Remove protection covers from all connections and protective film from all name-plates, where

appropriate, before installation on steam or other high temperature applications.

1.2 Access

Ensure safe access and if necessary a safe working platform (suitably guarded) before attempting

to work on the product. Arrange suitable lifting gear if required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or intricate work is required.

1.4 Hazardous liquids or gases in the pipeline

Consider what is in the pipeline or what may have been in the pipeline at some previous time.

Consider: flammable materials, substances hazardous to health, extremes of temperature.

1. Safety information

IM-P060-04 CMGT Issue 3

1.5 Hazardous environment around the product

Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases, extremes of

temperature, hot surfaces, fire hazard (e.g. during welding), excessive noise, moving machinery.

1.6 The system

Consider the effect on the complete system of the work proposed. Will any proposed action (e.g.

closing isolation valves, electrical isolation) put any other part of the system or any personnel

at risk?

Dangers might include isolation of vents or protective devices or the rendering ineffective of

controls or alarms. Ensure isolation valves are turned on and off in a gradual way to avoid system

shocks.

1.7 Pressure systems

Ensure that any pressure is isolated and safely vented to atmospheric pressure. Consider double

isolation (double block and bleed) and the locking or labelling of closed valves. Do not assume

that the system has depressurised even when the pressure gauge indicates zero.

1.8 Temperature

Allow time for temperature to normalise after isolation to avoid danger of burns.

PTFE - Gland packing

If seals made from PTFE have been subjected to a temperature approaching 260 °C (500 °F) or

higher, they will give off toxic fumes, which if inhaled are likely to cause temporary discomfort.

It is essential for a no smoking rule to be enforced in all areas where PTFE is stored, handled or

processed as inhalation of the fumes from burning tobacco contaminated with PTFE particles can

develop 'polymer fume fever'.

1.9 Tools and consumables

Before starting work ensure that you have suitable tools and/or consumables available. Use only

genuine Spirax Sarco replacement parts.

1.10 Protective clothing

Consider whether you and/or others in the vicinity require any protective clothing to protect against

the hazards of, for example, chemicals, high/low temperature, radiation, noise, falling objects, and

dangers to eyes and face.

1.11 Permits to work

All work must be carried out or be supervised by a suitably competent person.

Installation and operating personnel should be trained in the correct use of the product according

to the Installation and Maintenance Instructions.

Where a formal 'permit to work' system is in force it must be complied with. Where there is no such

system, it is recommended that a responsible person should know what work is going on and, where

necessary, arrange to have an assistant whose primary responsibility is safety.

Post 'warning notices' if necessary.

IM-P060-04 CMGT Issue 3

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1.12 Handling

Manual handling of large and/or heavy products may present a risk of injury. Lifting, pushing,

pulling, carrying or supporting a load by bodily force can cause injury particularly to the back.

You are advised to assess the risks taking into account the task, the individual, the load and the

working environment and use the appropriate handling method depending on the circumstances

of the work being done.

1.13 Residual hazards

In normal use the external surface of the product may be very hot. If used at the maximum

permitted operating conditions the surface temperature of some products may reach temperatures

of 260 °C (500 °F).

Many products are not self-draining. Take due care when dismantling or removing the product from

an installation (refer to 'Maintenance instructions').

1.14 Freezing

Provision must be made to protect products which are not self-draining against frost damage in

environments where they may be exposed to temperatures below freezing point.

1.15 Disposal

Unless otherwise stated in the Installation and Maintenance Instructions, this product is recyclable

and no ecological hazard is anticipated with its disposal providing due care is taken, EXCEPT:

PTFE - Gland packing:

-Waste parts can only be disposed of by an approved method, not incineration.

-Keep PTFE waste in a separate container, do not mix it with other rubbish, and consign it to

a landfill site.

1.16 Returning products

Customers and stockists are reminded that under EC Health, Safety and Environment Law,

when returning products to Spirax Sarco they must provide information on any hazards and the

precautions to be taken due to contamination residues or mechanical damage which may present a

health, safety or environmental risk. This information must be provided in writing including Health

and Safety data sheets relating to any substances identified as hazardous or potentially hazardous.

IM-P060-04 CMGT Issue 3

2.1 General description

A bronze bodied globe valve for steam, water, oil or air applications. To BS 5154 Series A.

Note: For further information see the following Technical Information Sheet, TI-P177-01-EN-ISS1, which gives

full details of: Materials, sizes and pipe connections, dimensions, weights, operating ranges and capacities.

2.2 Sizes and pipe connections

½", ¾", 1", 1¼", 1½" and 2" screwed BSP parallel.

Fig. 1

2. General product information

IM-P060-04 CMGT Issue 3

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0 50

100 150 200 250 300 350

0 5 10 15 20 25

260

200

150

100

-10

500

400

300

200

100

Pressure bar g

Temperature °C

Steam

saturation

curve

2.3 Pressure/temperature limits

The product must not be used in this region.

Maximum body design conditions PN25

PMA Maximum allowable pressure 25 bar g @ 170 °C (362.5 psi g @ 338 °F)

TMA Maximum allowable temperature 260 °C @ 10.5 bar g (500 °F @ 152 psi g)

Minimum allowable temperature -10 °C (14 °F)

PMO Maximum operating pressure 25 bar g @ 170 °C (362.5 psi g @ 338 °F)

TMO Maximum operating temperature 260 °C @ 10.5 bar g (500 °F @ 152 psi g)

Minimum operating temperature -10 °C (14 °F)

Designed for a maximum cold hydraulic test pressure of: 38 bar g (551 psi g)

Pressure psi g

Temperature °F

IM-P060-04 CMGT Issue 3

Note: Before actioning any installation observe the 'Safety information' in Section 1.

Wherever practicable, valves should be installed where there is adequate space available so that they can

be conveniently operated and maintained.

Before installing a valve, check to ensure that size, pressure rating, materials of construction, end connections,

etc. are suitable for the service conditions of the particular application.

Care must be taken to ensure that all dirt which may have

accumulated in the valve during storage is removed before

installation, maintain cleanliness during installation since

the introduction of dirt can result in damage to the valve

seats and operating mechanism.

To minimise the danger of abrasive particles damaging

the seats, pipeline strainers should be fitted upstream

of the valves.

Install the valve in the direction of flow given by the arrow

on the body with the handwheel in a suitable position. The

preferred position is with the spindle vertical. The valve

can be installed from the vertical to the horizontal plane

(see Figure 2 below).

Do not mount the valve upside down.

Fig. 2

Incorrect installation Correct installation

3. Installation

After installation or maintenance ensure that the system is fully functional. Carry out tests on any alarms

or protective devices.

4. Commissioning

IM-P060-04 CMGT Issue 3

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The Spirax Sarco HV3 stop valve is operated manually by a handwheel. Special care must be taken to ensure

that the movement is made in the correct direction.

To open the valve fully, turn the handwheel clockwise until the shaft is raised to the maximum position, and

then lower the shaft by giving the wheel an 1/8 to ¼ turn anticlockwise to remove any backlash. This is to

prevent the possibility of attempting to force open a valve, which is already fully open, resulting in damage

to the stem or other components.

Note: Before actioning any maintenance observe the 'Safety information' in Section 1.

6.1 General information

As with all mechanical devices, regular maintenance is the most efficient means of ensuring continual

operational efficiency.

Regular scheduled inspection of the valves is essential, especially on valves which are only occasionally

operated.

6.2 How to change the gland packing:

-Isolate the valve and allow the pressure and temperature to normalise.

-Unscrew the handwheel nut (12) and remove the handwheel (11).

-Unscrew the packing nut (10) and remove the gland (9).

-Dispose of the PTFE gland packing by observing the Safety information in Section 1.

-Replace the gland packing.

-Replace the gland (9) and packing nut (10) and tighten as required.

-Replace the handwheel, washer and handwheel nut and tighten as required.

-Open the isolation valves slowly to allow the system pressure to build up.

-Check for leaks.

6.3 How to change the seat and valve assembly:

-Isolate the valve and allow the pressure and temperature to normalise.

-Unscrew the bonnet (5) and remove the valve (3) and seat (2).

Note: Removing the seat requires a special tool, which is available from Spirax Sarco.

Contact your local Spirax Sarco office for further details.

-Replace the valve (3) and seat (2) with new parts.

-Replace the bonnet (5) and tighten as required.

-Open the isolation valves slowly to allow the system pressure to build up.

-Check for leaks.

6. Maintenance

5. Operation

IM-P060-04 CMGT Issue 3

Fig. 3

IM-P060-04 CMGT Issue 3

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Table 1 Recommended tightening torques

Item Part Size or

mm N m (lbf ft)

2 Seat

½" 30 (22)

¾" 40 (29)

1" 45 (32)

1¼" 50 (36)

1½" 100 (72)

2" 150 (107)

5 Bonnet

½" 25.5 A/F 100 (72)

¾" 30.5 A/F 150 (107)

1" 37.0 A /F 175 (125)

1¼" 42.0 A/F 200 (143)

1½" 47.0 A / F 250 (179)

2" 55.5 A/F 380 (272)

10 Packing

nut

½" 25.5 A/F 20 (14)

¾" 25.5 A/F 20 (14)

1" 25.5 A/F 25 (18)

1¼" 30.5 A/F 40 (29)

1½" 30.5 A/F 40 (29)

2" 34.0 A/F 45 (32)

Fig. 4

Indice

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