Spirax Sarco UIB45 User manual

IM-P113 -04 CMGT Issue 2 1
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
1. Safety information
2. General product information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
© Copyright 2022
Printed in GB
1133550/2
UIB45
Sealed Inverted Bucket Steam Trap
for use with Pipeline Connectors
Installation and Maintenance Instructions
IM-P113 -04
CMGT Issue 2

IM-P113 -04 CMGT Issue 2
2
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors

IM-P113 -04 CMGT Issue 2 3
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
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.
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 UIB45
complies with the requirements of the EU Pressure Equipment Directive/UK Pressure Equipment
(Safety) Regulations and falls within category 'SEP'.
It should be noted that products within this category are required by the Directive not to carry
the mark.
i) The UIB45 has been specifically designed for use on steam, air or condensate/water 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.
1. Safety information

IM-P113 -04 CMGT Issue 2
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UIB45 Sealed Inverted Bucket Steam Trap 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.

IM-P113 -04 CMGT Issue 2 5
UIB45 Sealed Inverted Bucket Steam Trap 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 -04 CMGT Issue 2
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UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
2.1 General description
The UIB45 sealed inverted bucket steam trap has been designed for either horizontal or vertical installation
(with the cover hanging downwards). When installed with a suitable pipeline connector (available separately
from Spirax Sarco) the UIB45 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 screwed,

Fig. 1 UIB45
Cover
2. General product information
2.2 Sizes and pipe connections
󰀨
PC10 Straight connector ASME 300 
PC10HP Straight connector ASME 600 
PC20 Straight connector with 'Y' type strainer ASME 300 
PC30 Connector with one piston isolation valve ASME 600 
PC40 Connector with two piston isolation valves ASME 600 
See the relevant Technical Information Sheet as listed above for details of the connections available on
pipeline connectors.
Standards
This product fully complies with the requirements of the EU
Pressure Equipment Directive/UK Pressure Equipment (Safety)
Regulations.
Certification

Note:
at the time of order placement.
Note: For additional product data see the following Technical


IM-P113 -04 CMGT Issue 2 7
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
2.3 Pressure/temperature limits
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 600
PMA Maximum allowable pressure  °C (1 440 psi g @ 100 °F)
TMA Maximum allowable temperature 425 °C @ 56 bar g 
Minimum allowable temperature  °C  °F)
PMO Maximum operating pressure for saturated steam service 63 bar g (914 psi)
TMO Maximum operating temperature 425 °C @ 56 bar g (797 
Minimum operating temperature 0°C (32 °F)
DPMX Maximum differential pressure
UIB45/5 45 bar (652 psi)
UIB45/6 20 bar (290 psi)
UIB45/8  (123 psi)
UIB45/10 4.5 bar (65 psi)
 149 bar g (2 161 psi g)
Temperature °C
Pressure bar g
Pressure psi g
Temperature °F
Steam saturation curve

IM-P113 -04 CMGT Issue 2

UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
Note: Before actioning any installation observe the 'Safety information' in Section 1.


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 The UIB45 can be installed on any pipeline connector. See separate Installation and Maintenance

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.
              
thread lubricant to the threads of the connector screws (10   
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.
3.5 Inverted bucket steam traps do not permit rapid release of air. On process applications, in particular,

󰀩
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.
3.6 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

3.7 Where the trap discharges into a closed condensate return system or where there is a lift at the trap,

3.8 If the trap has to be installed at a higher point than the drainage point, then a small bore riser into

internal waterseal.
3.9 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.
3.10 Check for leaks.
Note 1: 
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

IM-P113 -04 CMGT Issue 2 9
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
UIB in horizontal pipeline
UIB in vertical pipeline
Fig. 3
Pipeline
connector
10
Fig. 2
UIB45 Inverted bucket
steam trap
Table 1 Recommended tightening torques (for suitably lubricated threads)
Item Part
mm N m (lbf ft)
10 Connector screws   
After installation or maintenance ensure that the system is fully functioning. Carry out tests on any alarms
or protective devices.
4. Commissioning

IM-P113 -04 CMGT Issue 2
10
UIB45 Sealed Inverted Bucket Steam Trap 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 UIB45 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.
-                        
thread compound 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.
As condensate reaches the trap it forms a water seal inside the body. The weight of the bucket keeps the
󰀨

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.
Under most conditions the trap will discharge condensate with a blast type action. Under low load and/or low
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
6. Maintenance

IM-P113 -04 CMGT Issue 2 11
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors
Fig. 4

The spares which are available are shown in heavy outline. Parts shown in a solid line are not supplied as
spares.
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.
Example: 
trap (for use with pipeline connectors).
12 11
UIB45 inverted bucket steam trap
Pipeline
connector
10
7. Spare parts
Table 1 Recommended tightening torques
(for suitably lubricated threads)
Item Part
mm N m (lbf ft)
10 Connector
screws   

IM-P113 -04 CMGT Issue 2
12
UIB45 Sealed Inverted Bucket Steam Trap for use with Pipeline Connectors