Spirax Sarco FTGS14 User manual

IM-P145-12 ST Issue 5 1
FTGS14
Ball Float Steam Trap DN15 (½") to DN25 (1")
Installation and Maintenance Instructions
IM-P145-12
ST Issue 5
1458050/5
1. Safety information
2. General
product information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
Printed in the UK © Copyright 2009

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1. Safety information
Safe operation of this product can only be guaranteed if it is 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 product listed below complies with the requirements of the European Pressure
Equipment Directive 97/23/EC and carries the mark when so required. The product
falls within the following Pressure Equipment Directive categories:
Group 2 Group 2
Product Gases Liquids
FTGS14 SEP SEP
i) The product has been specifically designed for use on steam, air or water/
condensate which is in Group 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.
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.

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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 the danger of burns.
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.

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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 in excess of 250°C (482°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.
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. General product information
2.1 General description
The FTGS14 ball float steam trap has an austenitic stainless steel body, stainless steel
working internals and integral automatic air venting facility. The SG iron cover is electroless
nickel-plated offering increased resistance to erosion. The trap can be supplied with
either screwed or flanged horizontal connections and can be maintained without disturbing
the pipework.
Available options
FTGS14 (R-L) Horizontal connections with flow from right to left
FTGS14 (L-R) Horizontal connections with flow from left to right
Capsule
The BP99/32 capsule which is used in the FTGS14 is suitable for use on:
150°C superheat @ 0 bar g and 50°C superheat @ 32 bar g.
Optional extras
A manually adjustable needle valve (designated 'C' on the nomenclature i.e. FTGS14-C) can
be fitted to the trap. This option provides a steam lock release (SLR) feature in addition to
the standard air vent. For further information please consult Spirax Sarco.
An integral strainer screen (designated 'X' on the nomenclature i.e. FTGS14X) can be fitted
to the trap. For further information please consult Spirax Sarco.
Standards
This product fully complies with the requirements of the European Pressure Equipment
Directive 97 / 23 / EC.
Certification
This product is available with a manufacturers Typical Test Report. Note: All certification/
inspection requirements must be stated at the time of order placement.
Note: For further information see the following Technical Information Sheets:
TI-P145-11 for the FTGS14 screwed and TI-P145-18 for the FTGS14 flanged.
2.2 Sizes and pipe connections
½", ¾" and 1" screwed BSP and NPT.
DN15, DN20 and DN25 flanged EN 1092 PN16, ASME (ANSI) 150 and JIS / KS 10.
Fig. 2 FTGS14-C (R-L)Fig. 1 FTGS14 (R-L)

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Temperature °F
Steam
saturation
curve
2.3 Pressure /temperature limits (ISO 6552)
The product must not be used in this region.
Body design conditions PN16
PMA Maximum allowable pressure 16 bar g @ 120°C (232 psi g @ 248°F)
TMA Maximum allowable temperature 250°C (482°F)
Minimum allowable temperature -10°C (14°F)
PMO Maximum operating pressure
for saturated steam service 14.6 bar g (211.7 psi g)
TMO Maximum operating temperature 250°C @ 13.8 bar g (482°F @ 200 psi g)
Minimum operating temperature 0°C (32°F)
Maximum FTGS14-4.5 4.5 bar (65.25 psi g)
PMX differential FTGS14-10 10 bar (145 psi g)
pressure FTGS14-14 14 bar (203 psi g)
Designed for a maximum cold
hydraulic test pressure of: 24 bar g (348 psi g)
Temperature °C
Pressure psi g
Pressure bar g

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Note: Before actioning any installation observe the 'Safety information' in Section 1.
Warning
The cover gasket contains a thin stainless steel support ring which may cause physical
injury if not handled and disposed of carefully.
Referring 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 fitted,
ensure that a safety device is included in the system to prevent overpressurisation.
3.2 Determine the correct installation situation and the direction of fluid flow. Please note
that the FTGS14 is designed for horizontal flow only.
3.3 Remove protective covers from all connections and protective film from all name-plates,
where appropriate, before installation on steam or other high temperature applications.
Installation notes:
- If the trap is to discharge to atmosphere ensure it is to a safe place, the discharging
fluid may be at a temperature of 100°C (212°F).
- The trap must be fitted with the float arm in a horizontal plane so that it rises and
falls vertically, therefore the arrow on the name-plate must point downwards.
- Unless specified, traps will be supplied with R-L (right to left) flow. Traps can be
supplied with left to right (L-R) flow but must be specified at the time of
order placement.
- The connection orientation can be changed on site by undoing the four cover bolts
and moving the cover to the preferred orientation. Please note that the FTGS14 is
not designed for vertical flow. A new gasket must always be fitted before
reassembly.
- Minimum withdrawal distance to remove the cover is 105 mm (4.13").
3.4 Open the isolation valves slowly until normal operating conditions are achieved.
3.5 Check for leaks.
Installation of the manually adjustable needle valve (SLR assembly):
3.6 The SLR assembly is fitted to all float traps with the suffix 'C'.
e.g. FTGS14-10C. 'C' = Combined steam lock release and thermostatic air vent.
3.7 Check if the application requires the SLR assembly for correct operation. The SLR
should only be used to prevent 'steam locking' and therefore is designed to pass only
a small amount of steam.
3.8 The SLR assembly will be dispatched, pre-set to a partial bleed condition. The unit
should be screwed clockwise to close and anticlockwise to open. When required the
SLR should be used as a controlled continuous bleed, it is not recommended that the
SLR be left in the fully open condition as this may lead to premature trap failure and
more frequent maintenance schedules.
Please consult Spirax Sarco should further information be required.
3. Installation

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6. Maintenance
4. Commissioning
After installation or maintenance ensure that the system is fully functioning. Carry out tests
on any alarms or protective devices.
5. Operation
The float trap is a continuous discharge trap, removing condensate the instant it forms. On
start-up, the thermostatic air vent allows air to bypass the main valve preventing the system air
binding. Hot condensate will close the air vent tightly, but as soon as it enters the main chamber
of the trap, the float rises and the lever mechanism attached to it opens the main valve - keeping
the system drained of condensate at all times. When steam arrives, the float drops and closes
the main valve. Float traps are renown for their high start-up load handling capability, clean
tight shut-off and resistance to waterhammer and vibration.
Note: Before actioning any maintenance programme observe
the 'Safety information' in Section 1.
Warning
The cover gasket contains a thin stainless steel support ring which may
cause physical injury if not handled and disposed of carefully.
6.1 General information
Before undertaking any maintenance on the trap it must be isolated from both the supply line
and return line and any pressure allowed to safely normalise to atmosphere. The trap should
then be allowed to cool. When reassembling, ensure that all joint faces are clean.
6.2 How to fit the main valve assembly:
- Undo the cover bolts (2) and lift off the body (1).
- Remove the complete float assembly (7, 8, 10 and 11) by undoing the two screws (7).
- Remove the main valve seat (5) and replace with a new one supplied with new gasket (6).
Note: A valve spring (Item 28) is fitted to the DN25 (1") traps only.
- Fit a complete new float assembly by tightening the assembly set screws (7) to the
recommended torque (see Table 1).
- Refit the body (1) using a new gasket (3).
6.3 How to fit the air vent assembly:
- Remove the spring clip, element and spacer plate (17).
- Unscrew the seat.
- Fit a new gasket (18), seat and frame.
- Assemble the spacer plate, fit element and clips.
- Align the complete air vent (17) horizontally so that the frame clears the cover.
- Refit the body (1) using a new gasket (3).

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6 5 11 10 7 8 3
19
+
21
20 18 17
Fig. 5
6.4 How to fit the manually adjustable needle valve
(SLR assembly):
- Unscrew the complete SLR assembly (19 and 21).
- Remove the SLR gasket (20).
- Replace the SLR assembly (19 and 21) and gasket (20) with new ones.
- Tighten the SLR assembly to the recommended torque (see Table 1).
- To provide the maximum steam bleed turn the slotted SLR stem anticlockwise until the limit
is reached. The amount of bleed can be adjusted by turning the SLR stem clockwise to close.
The steam bleed will be fully closed within ¾ of a turn from fully open.
3
Air vent assembly
Steam lock
release assembly
2
Table 1 Recommended tightening torques
Item Part
or
N m (lbf ft)
mm
2 Cover bolts 17 A /F M10 x 30 47 - 50 (35 - 37)
5 Main valve seat 17 A /F 50 - 55 (37 - 40)
7 Main valve assembly screws Pozidrive M4 x 6 2.5 - 3.0 (1.8 - 2.2)
17 Air vent assembly 17 A /F 50 - 55 (37 - 40)
19 SLR body 19 A /F 57 - 63 (42 - 46)
SLR gland nut 13 A /F 3 - 5 (2.2 - 3.7)
29 19 A/F M14 x 1.5 57 - 63 (42 - 46)
Frame
Seat
Main valve assembly
Note: Item 28 is required for DN25 (1") size only
1
28
SLR
body
SLR
gland
nut

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7. Spare parts
Spare parts
The spare parts available are shown in solid outline. Parts drawn in broken line are not
supplied as spares.
Available spares
Maintenance kit 3, 5, 6, 7 (2 off), 8, 10, 11, 17, 18, 28 (DN25 / 1" only)
Main valve assembly with float 3, 5, 6, 7 (2 off), 8, 10, 11, 28 (DN25 / 1" only)
Air vent assembly 3, 17, 18
Manually adjustable needle valve (FTGS14-C only) 19 + 21, 20
Cover gasket (packet of 3) 3
Plug and gasket 20, 29
How to order spares
Always order spares by using the description given in the column headed 'Available spares'
and state the size, type of trap and pressure range.
Example: 1 - Main valve assembly for a Spirax Sarco ½" FTGS14-10 ball float steam trap.
17
8
7
11 10
5
6
Main valve assembly
Note: Item 28 is required for the DN25 (1") size only
19
+
21
20
Manually
adjustable
needle valve
18
Air vent assembly
3
3
28
Fig. 6

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