Spirax Sarco AE50S User manual

IM-P017-11 CMGT Issue 4 1
1. General safety
information
2. General product
information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
© Copyright 2017
Printed in GB
IM-P017-11
CMGT Issue 4
0176050/4
AE50S
Automatic Air and Gas Vent for Liquid Systems
Installation and Maintenance Instructions

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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 11 on this
document) 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. 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 listed below comply with the requirements of the
European Pressure Equipment Directive 97/23/EC and carry the mark when
so required. It should be noted that products rated as 'SEP' are required by the
Directive not to carry the mark.
The products fall within the following Pressure Equipment Directive categories:
Product Group 1
Gases
Group 2
Gases
Group 1
Liquids
Group 2
Liquids
AE50S SEP SEP SEP SEP
i) AE50S has been specifically designed for use on steam, air or water / condensate
which 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 before installation.
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.
3. Lighting
Ensure adequate lighting, particularly where detailed or intricate work is required.
1. General safety information

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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.
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.
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.
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.
8. Temperature
Allow time for temperature to normalise after isolation to avoid danger of burns.
If parts made from Viton have been subjected to a temperature approaching
315 °C (599 °F) or higher, it may have decomposed and formed hydroflouric acid.
Avoid skin contact and inhalation of any fumes as the acid will cause deep skin
burns and damage the respiratory system.
If parts made from PTFE have been subjected to a temperature approaching
260 °C (500°) 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'.
9. Tools and consumables
Before starting work ensure that you have suitable tools and/or consumablesavailable.
Use only genuine Spirax Sarco replacement parts.
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.

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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.
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.
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 100 °C (212 °F).
Many products are not self-draining. Take due care when dismantling or removing
the product from an installation (refer to 'Maintenance instructions').
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.
15. Safety information - Product specific
See the relevant Sections of the attached Installation and Maintenance Instructions
for specific details relating to these products.
16. 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.
17. 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
The AE50S automatic air and gas vent is designed for use on liquid systems. It has welded
construction and the body is manufactured in 304L austenitic stainless steel.
Certification
The product is available with material certication EN 10204 3.1.B for bowl, cover and inlet
connection as standard.
Note:
For further information see the following Technical Information Sheet, TI-P017-10, which
gives full details of: Materials, sizes and pipe connections, dimensions, weights, operating
ranges and capacities.
2.2 Sizes and pipe connections
Inlet: ¾" female BSP or NPT
Outlet: ½" female BSP or NPT
Fig. 1 AE50S
2. General product information

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Pressure bar g
Temperature °C
The product must not be used in this region.
Body design conditions ANSI 300
PMA Maximum allowable pressure 41.4 bar g (600 psi g)
TMA Maximum allowable temperature 427 °C (800 °F)
PMO Maximum operating pressure 41.4 bar g (600 psi g)
TMO Maximum operating temperature 427 °C (800 °F)
∆PMX Maximum differential pressure 30 bar (435 psi)
Designed for a maximum cold hydraulic test pressure of: 63 bar g (880 psi g)
Minimum specific gravity of liquid 0.65
2.3 Pressure / temperature limits
0
0
100
200
300
400
427
10 20 30 40 50

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Discharge to
safe visual
point
Air bottle
Fig. 2 Typical application
Note: Before actioning any installation observe the 'Safety information' in Section 1.
Refering to the Installation and Maintenance Instructions, name-plate and Technical
Information Sheet, check that the product is suitable for the intended installation:
3.1 Check materials, pressure and temperature and their maximum values. If the
maximum operating limit of the product is lower than that of the system in which
it is being tted, ensure that a safety device is included in the system to prevent
overpressurisation.
3.2 Determine the correct installation situation and the direction of uid ow.
3.3 Remove protective covers from all connections.
3.4 The AE50S should be installed vertically with the inlet at the bottom. Because of
the way automatic air and gas vents operate they all dribble water and liquid when
discharging air and gas. This is perfectly normal.
We recommend piping the discharge to a safe visible point or drain via an air break.
3.5 For installation on superheated water applications: We at Spirax Sarco
recommend 1 to 2 m of ¾" v e r t i c a l p i p e l i n e s h o u l d b e  t t e d p r i o r t o t h e i n l e t o f t h e v e n t .
On superheated water systems the outlet pipework must be sized to accommodate
any ash steam created during discharge.
Direct the out let pipework to a safe point of discharge where there is no ris k of injur y
to persons or damage to property.
3. Installation
Because of the way automatic air vents operate they all
dribble water when discharging air. This is perfectly normal,
because of this we recommend piping the discharge to a
drain via an air break.

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Note: Before actioning any maintenance programme observe the 'Safety information'
in Section 1.
The AE50S is a sealed automatic air and gas vent. It is adjustable and requires no
maintenance.
After installation or maintenance ensure that the system is fully functioning. Carry out tests
on any alarms or protective devices.
At st ar t- up the air vent is op en allowin g air to pass throug h the main valve. As soo n as water
reaches the vent the oat is raised and the lever mechanism closes the valve.
When more air reaches the vent it displac es water and the oat falls thus opening the valve.
After the air is discharged the valve is closed, as the water level rises to replace the air.
4. Commissioning
5. Operation
6. Maintenance
The AE50S is a sealed automatic air and gas vent, no spare parts are available.
How to order a new product:
Example: 1 o 󰀨 ¾" Spirax Sarco AE50S automatic air and gas vent manufactured in austentic
stainless steel screwed BSP.
7. Spare parts