Spirax Sarco DN15 User manual

IM-P405-54 EMM Issue 4 1
BBV Automatic or Manually Actuated Boiler Blowdown Valves
M
manually
actuated
PN/M
automatically
actuated
1. Safety information
2. General product information
3. Installation & commissioning
4. Maintenance of the actuator
5. Maintenance of the valve
6. Spare parts
© Copyright 2021
Printed in France
4057050/4
BBV
Automatic or Manually Actuated
Boiler Blowdown Valves
Installation and Maintenance Instructions
IM-P405-54
EMM Issue 4
DN15 - DN50

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
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.
Safety note - PTFE handling precautions
Within its working temperature range PTFE is a completely inert material, but when heated
to its sintering temperature it gives rise to gaseous decomposition products or fumes
which can produce unpleasant effects if inhaled. The inhalation of these fumes is easily
prevented by applying local exhaust ventilation to atmosphere as near to their source as
possible.
Smoking should be prohibited in workshops where PTFE is handled because tobacco
contaminated with PTFE will during burning give rise to polymer fumes. It is therefore
important to avoid contamination of clothing, especially the pockets, with PTFE and to
maintain a reasonable standard or personal cleanliness by washing hands and removing
any PTFE particles lodged under the fingernails.
WARNING:
This product should only be used to purge boiler water containing non-metallic sludge
and sediment within the pressure and temperature limits.
For optimum performance, ensure that TDS value is in accordance with the boiler's
instructions.
In the event that lever fails to return to the closed position, do not turn the actuator and
refer to the maintenance instructions.
If the actuator is turned, the plug will not close properly in the seat and the valve will leak.
The product guarantee invalid if it is dis-assembled before returning.
1. Safety information

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
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.
These products comply with the requirements of the EU Pressure Equipment Directive/UK Pressure
Equipment (Safety) Regulations, carry the mark when so required and fall within the Pressure
Equipment Directive (PED) categories as stated on page 4.
i) The products have been specifically designed for use with liquids and gases which are in Groups
1 and 2 of the above mentioned Pressure Equipment Directive. The products’ use on other fluids
may be possible but, if this is contemplated, Spirax Sarco should be contacted to confirm the
suitability of the product for the application being considered.
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.
vi) Prior to use, the user shall ensure the fluid compatibility with the equipment material.
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.

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
BBV boiler blowdown valves - PED categories
Product Group 1
Gases
Group 2
Gases
Group 1
liquids
Group 2
liquids
BBV43
PN40
JIS 20/KS 20
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 SEP SEP
NPT screwed SW
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 2 SEP
ASME 300
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 2 SEP
JIS 20/KS 20
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 1 1 SEP SEP
ASME 600
PN63/PN100
JIS 30/KS 30
JIS 40/KS 40
BW/SW
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP 2SEP
DN40 - DN50 2 1 2 SEP
BBV63
BSP screwed
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 SEP SEP
PN40 JIS 20/KS 20
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 SEP SEP
NPT screwed SW
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 2 SEP
ASME 300
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 2 1 SEP SEP
DN50 - DN50 2 1 2 SEP
JIS 20/KS 20
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP SEP SEP
DN40 - DN50 2 1 SEP SEP
ASME 600
PN63/PN100
JIS 30/KS 30
JIS 40/KS 40
BW/SW
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP 2SEP
DN40 - DN50 2 1 2 SEP

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
BBV boiler blowdown valves - PED categories
Product Group 1
Gases
Group 2
Gases
Group 1
liquids
Group 2
liquids
BBV83
ASME 600
PN63/PN100
JIS 30/KS 30
JIS 40/KS 40
BW/SW
DN15 - DN25 SEP SEP SEP SEP
DN32 2SEP 2SEP
DN40 - DN50 2 1 2 SEP
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.
1.5 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 the danger of burns and consider
whether protective clothing (including safety glasses) is required.
PTFE SEALS
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 persons inhaling the fumes from burning tobacco contaminated with PTFE particles
can develop 'polymer fume fever'.

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
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.
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 538 °C (1000 °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. However, if
the valve is fitted with a Viton or PTFE seat, special care must be taken to avoid potential health
hazards associated with decomposition/burning of these seats.
PTFE:
- Can only be disposed of by approved methods, not incineration.
- Keep PTFE waste in a separate container, do not mix it with other rubbish, and consign it to a
landfill site.

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
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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BBV Automatic or Manually Actuated Boiler Blowdown Valves
ASME 600
EN 1092 PN100
ASME 300
EN 1092 PN40
2.1 General description
The BBV is specifically designed for the removal of suspended/deposited solids and water from the bottom
of steam boilers.
The BBV is available in air-actuated and manual versions. The air-actuated version is supplied with a manual
hand lever. The valve is spring-to-close on power failure and the manual version 'M' can easily be upgraded
to an automatic version 'PN/M'.
When used with a Spirax Sarco blowdown controller the automatic version provides timed control of blowdown,
ensuring that the recommended blowdown occurs with the minimum of heat loss and avoids duplication and
omissions.
The valve can be fitted with a mechanical switchbox. This can be linked to the blowdown controller or a
BMS system to indicate when the valve has not closed. An optional ¼" 3-way solenoid valve may be directly
mounted on the side of the actuator.
Fig. 1 Typical example of a BBV_3 PN/M automatic boiler blowdown valve
DN15
2. General product information

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
Available types of boiler blowdown valve *:
Air pneumatically actuated
supplied with a manual
actuation lever
BBV4_ PN/M Steel body
BBV6_ PN/M Stainless steel body
BBV8_ PN/M Alloy steel body
Manually actuated complete
with a manual actuation lever
BBV4_ M Steel body Please note that all of the 'M'
versions can be automated to
'PN/M'.
BBV6_ M Stainless steel body
BBV8_ M Alloy steel body
* Please note that the underscore '_' represents either: 1= Screwed or 3= Flanged.
Standards
These products comply with the requirements of the EU Pressure Equipment Directive/UK Pressure Equipment
(Safety) Regulations.
Certification
These products are available with material certification to EN 10204 3.1.
Note: All certification/inspection requirements must be stated at the time of order placement.
Note: For additional product data see the following Technical Information sheet TI-P405-51.
2.2 Size and pipe connections
DN15, DN20, DN25, DN32, DN40 and DN50 Other available options:
Butt weld
Socket weld
JIS/KS 30 and JIS/KS 40
For alternative connections to those stated opposite
please contact Spirax Sarco.
½", ¾", 1", 1¼", 1½", 2"
Flanged EN 1092 PN40, PN63 and PN100
Flanged ASME 300 and ASME 600
2.3 Technical data
Actuator
Temperature range -20 °C to +110 °C (-4 °F to 230 °F)
Maximum operating inlet pressure 6 bar g (87 psi g)
Air supply connection ¼" NPT
Actuator travel 1.0 to 2.0 bar (14.5 to 29 psi) 20 mm (8/10")
Valve
Leakage Metal-to-metal 10% of standard seat class IV
Rangeability Fast 10:1
Travel DN15 to DN50 ( ½" to 2") 20 mm (8/10")
Pressure/temperature
limits
ASME Class 300 and
EN 1092 PN40
EN
BBV4x Carbon steel
BBV6x Stainless steel
ASME
BBV4x Carbon steel
BBV6x Stainless steel
ASME Class 600,
EN 1092 PN63 and
EN 1092 PN100
BBV4x Carbon steel
BBV6x Stainless steel
BBV8x Alloy steel

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BBV Automatic or Manually Actuated Boiler Blowdown Valves
2.4 Materials (Parts 1 to 15)
No. Part Material
1Body
BBV4_ Carbon Steel
BBV6_ Stainless Steel
BBV8_ Alloy Steel
2Plug Stainless Steel + stellite
3Seat Stainless Steel + stellite
4Seat gasket Reinforced exfoliated graphite
5Seat retainer Stainless Steel
6Cover
BBV4_ Carbon Steel
BBV6_ Stainless Steel
BBV8_ Alloy Steel
7Packing
BBV_ _P PTFE
BBV_ _H Graphite
8Cover gasket Reinforced exfoliated graphite
9Bonnet nuts
BBV_ _H Stainless Steel
BBV6_
Other Carbon Steel
10 Bonnet studs
BBV_ _H Stainless Steel
BBV6_
Other Carbon Steel
11 Actuator clamp nut
BBV6_ Stainless Steel
Other Carbon Steel
12 Gland nut Stainless Steel
13 Scraper ring PTFE
14 Yoke SG Iron
15 Closed plate Stainless Steel
Parts 16 to 42
continued on pages 12 and 13