Spirax Sarco UIB30 User manual
IM-P113 -02 CMGT Issue 6 1
UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
UIB30
and
UIB30H
1. Safety information
2. General product information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
1130050/6
UIB30 and UIB30H
Sealed Inverted Bucket Steam Traps
for use with Pipeline Connectors
Installation and Maintenance Instructions
IM-P113 -02
CMGT Issue 6
© Copyright 2021
Printed in GB
IM-P113 -02 CMGT Issue 6
2
UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
IM-P113 -02 CMGT Issue 6 3
UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
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.
Warning
The inner and outer gaskets used when installing/maintaining the UIB to a PC_ pipeline connector
contain thin stainless steel support rings which may cause physical injury if not handled and
disposed of carefully.
1.1 Intended use
Referring to the Installation and Maintenance Instructions, product marking and Technical
Information Sheet, check that the product is suitable for the intended use/application. The UIB30
and UIB30H comply with the requirements of the Pressure Equipment Directive (PED) and fall
within category 'SEP'.
It should be noted that products within this category are required by the Directive not to carry
the mark.
i) The product has been specifically designed for use on steam, compressed air and 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 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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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
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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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
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 the product may reach temperatures
up to 425 °C (797 °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.
IM-P113 -02 CMGT Issue 6
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
Fig. 1 UIB30
The UIB30 and UIB30H are sealed inverted bucket steam
traps for either horizontal or vertical installation (with the
cover hanging downwards). The UIB30H is designed for
higher capacities. When installed with a suitable pipeline
connector (available separately from Spirax Sarco) the UIB
can easily and simply be removed without breaking into the
pipeline, thus speeding up trap replacement with minimal
system downtime. Pipeline connectors are available with
The body and cover meet typical industry standards including
Charpy testing of 27J @ -30 °C.
Standards
This product fully complies with the requirements of the
Pressure Equipment Directive (PED).
Certification
Note:
Note: For additional information see Technical Information
Sheet: TI- P113- 01 for the UIB30 and UIB30H.
2.2 Sizes and pipe connections
PC10HP Straight connector ASME 600 (see TI-P128-10)
PC20 Connector with 'Y' type strainer ASME 300 (see TI-P128-15)
PC30 Connector with one piston isolation valve ASME 600 (see TI-P128-02)
PC40 Connector with two piston isolation valves ASME 600 (see TI-P128-03)
See the relevant Technical Information Sheet as listed above for details of the connections available on
pipeline connectors.
1 Cover 13 *
14 *
2. General product information
2.1 General description
* Optional extras
See page 9
IM-P113 -02 CMGT Issue 6 7
UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
425
400
300
200
100
0
-29
0 10 20 30 40 49.6
700
600
500
400
300
200
100
0
0 100 200 300 400 500 600 700
The product must not be used in this region.
Note: The model of pipeline connector and connections selected will dictate the maximum operating
pressure and temperature of the complete assembly. Consult the specified Technical Information Sheet for
this information (see Section 2.2).
Body design conditions ASME 300
PMA Maximum allowable pressure 49.6 bar g @ 38 °C (720 psi g @ 100 °F)
TMA Maximum allowable temperature 425 °C @ 28 bar g (800 °F @ 405 psi g)
Minimum ambient temperature -30 °C (-22 °F)
PMO Maximum operating pressure for saturated steam service 32 bar g (464 psi)
TMO Maximum operating temperature 425 °C @ 28 bar g (800 °F @ 405 psi g)
Minimum operating temperature 0°C (32 °F)
∆PMX
Maximum
pressure
UIB30/4 UIB30H/5 30 bar (435 psi)
UIB30/5 UIB30H/6 20 bar (290 psi)
UIB30/6 UIB30H/7 12 bar (174 psi)
UIB30/7 UIB30H/8 8.5 bar (123 psi)
UIB30H/10 5 bar (72.5 psi)
UIB30/8 4 bar (58 psi)
UIB30/10 2.5 bar (36 psi)
UIB30H/12 2 bar (29 psi)
UIB30/12 1.5 bar (22 psi)
Designed for a maximum cold hydraulic test pressure of: 75 bar g (1 088 psi g)
2.3 Pressure/temperature limits
Temperature °C
Pressure bar g
Pressure psi g
Temperature °F
Steam saturation
curve
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
Note: Before actioning any installation observe the 'Safety information' in Section 1.
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
is included in the system to prevent overpressurisation.
3.2
3.3
appropriate, before installation on steam or other high temperature applications.
3.4 If the trap has been supplied with a drain plug and is to be replaced with a drain device, this should
13) and the drain plug
14).
3.5 The UIB can be installed on any pipeline connector. See separate Installation and Maintenance
Instructions for Spirax Sarco pipeline connectors (IM-P128-06, IM-P128-11 and IM-P128-13).
Ensure that both gaskets are clean and undamaged and that the transfer holes are clear. Place the
UIB body against the connector gasket face, ensuring that the trap itself is vertical so the bucket
always rises and falls in a vertical plain.
Ensuring the new connector screws supplied with the trap are used, apply a suitable amount of
anti-seize thread lubricant to the threads of the connector screws (10). Tighten the screws finger
tight until the mating gasket faces are in parallel, intimate contact. Tighten the screws evenly and
gradually to the recommended torque value (see Table 1). Open isolation valves slowly until normal
operating conditions are achieved.
3.6 Inverted bucket steam traps do not permit rapid release of air. On process applications, in particular,
this can lead to slow warm-up times and waterlogging of the steam space. A separate external air
trap. If it is below, and is leaking or left open, the waterseal could be blown away leading to steam
damage can be reduced by thermal insulation.
3.7 The inlet of the trap should be below the drain point of the plant being drained, so that a waterseal
can be maintained around the open end of the bucket. When installed in a horizontal pipeline a small
drop leg should precede the trap - typically 150 mm (6").
3.8 Where the trap discharges into a closed condensate return system or where there is a lift at the trap,
3.9 If the trap has to be installed at a higher point than the drainage point, then a small bore riser into
internal waterseal.
3.10 If the trap is installed on a superheated steam system application, then a non return valve should be
Priming of the trap with water may be required before commissioning.
3.11 Check for leaks.
Note 1:
at a temperature of 100 °C (212 °F).
Note 2: On all blast discharge steam traps check valves and sight glasses must be installed at least 1 metre
(3 ft) downstream of the trap.
3. Installation
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
UIB in a
horizontal
pipeline
UIB in a
vertical
pipeline
Fig. 3
UIB30 and UIB30H
Inverted bucket
steam trap
Fig. 2
Pipeline connector
10
1 Cover
13 *
14 *
* Optional extras
The cover (1) is also available
with a threaded drain plug and
connection (13 + 14) in
½ ½" BSP to allow
for drainage. If this option is
at the time of order placement.
Table 1 Recommended tightening torques
Item Part or
mm N m (lbf ft)
10 Connector screws 9/16"30 - 35 (22 - 26)
After installation or maintenance ensure that the system is fully functioning. Carry out tests on any alarms
or protective devices.
4. Commissioning
IM-P113 -02 CMGT Issue 6
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
Note: Before actioning any maintenance programme observe the 'Safety information' in Section 1.
Warning
The inner and outer gaskets used when installing/ maintaining the UIB to a PC_ pipeline connector
contain thin stainless steel support rings 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 Replacement of the trap unit:
-Ensure that the correct tools and necessary protective equipment are used at all times.
-Replacement of the trap unit is achieved by removing the two connector screws (10) and removing the trap.
-Always use new connector screws, as supplied with the new trap, when replacing a universal trap.
-The new trap unit should be positioned against the connector gasket face and apply a suitable amount
of anti-seize thread lubricant to the threads of the connector screws.
-
-Tighten the screws evenly and gradually to the recommended torque (see Table 1).
-Open isolation valves slowly until normal operating conditions are achieved.
-Check for leaks.
6. Maintenance
As condensate reaches the trap it forms a water seal inside the body. The weight of the bucket keeps the
or superheat conditions the trap may need to be 'primed' with water before system start-up. When steam
enters the underside of the bucket it gives it buoyancy and the bucket rises allowing the valve to seat and
stop steam escaping.
The bucket will lose its buoyancy as the enclosed steam condenses due to radiation losses and steam
the cycle is then repeated.
The small vent hole in the bucket will bleed air into the top of the trap. The vent hole is of small diameter to
reduce steam loss and will consequently vent air very slowly.
pressure applications the discharge may tend to 'dribble'. Condensate is discharged at steam temperature
consequently due care must be given to the site of the discharge.
5. Operation
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
Fig. 4The UIB and UIB30H are sealed non-maintainable trap units.
are shown in heavy outline.
Parts shown in a grey line are not supplied as spares.
UIB30
inverted bucket
steam trap
7. Spare parts
Available spares
Connector screws and gasket set 10, 11, 12
How to order spares
Always order spare parts by using the description given in the column headed
'Available spares' and state the size, model no. and pressure rating of the trap.
Examples:
1 - Connector screw and gasket set for a Spirax Sarco UIB30 sealed stainless steel bucket steam trap (for
use with pipeline connectors).
Table 1 Recommended tightening torques
Item Part or
mm N m (lbf ft)
10 Connector screws 9/16"30 - 35 (22 - 26)
Table 2 Dimensions of the optional drain connection - See Fig. 1
Item Part or
mm
13 Drain connection
14 Drain plug
½" BSP
10
12 11
Pipeline connector
IM-P113 -02 CMGT Issue 6
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UIB30 and UIB30H Sealed Inverted Bucket Steam Traps for use with Pipeline Connectors
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