Spirax Sarco DN15 Manuale utente

IM-P405-54 EMM Issue 4 1

BBV Automatic or Manually Actuated Boiler Blowdown Valves

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

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

IM-P405-54 EMM Issue 4

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

IM-P405-54 EMM Issue 4 3

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.

IM-P405-54 EMM Issue 4

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

IM-P405-54 EMM Issue 4 5

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'.

IM-P405-54 EMM Issue 4

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.

IM-P405-54 EMM Issue 4 7

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.

IM-P405-54 EMM Issue 4

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

IM-P405-54 EMM Issue 4 9

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

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

IM-P405-54 EMM Issue 4

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

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