Spirax Sarco HV3 User manual

IM-P060-04 CMGT Issue 3
1
1. Safety information
2. General product information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
© Copyright 2018
Printed in GB
0601050/3
HV3
Stop Valve
Installation and Maintenance Instructions
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

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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.

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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.

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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

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0 50
100 150 200 250 300 350
0 5 10 15 20 25
260
200
150
100
50
0
-10
500
400
300
200
100
0
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

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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

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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

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Fig. 3
12
11
10
9
5
2
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
10
5
2