Spirax Sarco 0722195 Installation And Maintenance Instructions Manual Download Page 3

IM-S03-11 

CMGT Issue 5

3

HM and HM34 Inverted Bucket Steam Traps

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 Pressure Equipment Directive 
2014/68/EU and carries the 

 mark when so required. 

The product falls within the following Pressure Equipment Directive categories:

Product 

Group 2 

Gases 

Group 2

Liquids

HM and HM34

SEP 

SEP

i) The product has been specifically designed for use on steam, air or water /condensate which 

are 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 before installation.

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

Summary of Contents for 0722195

Page 1: ...M34 Series 1 Safety information 2 General product information 3 Installation 4 Commissioning 5 Operation 6 Maintenance 7 Spare parts Copyright 2020 Printed in GB 0670350 5 HM and HM34 Inverted Bucket...

Page 2: ...IM S03 11 CMGT Issue 5 2 HM and HM34 Inverted Bucket Steam Traps...

Page 3: ...firm 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...

Page 4: ...ork 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...

Page 5: ...lth 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 w...

Page 6: ...cket Steam Traps Prevention of water hammer Steam trapping on steam mains Steam Mains Do s and Don ts Steam Steam Flow Flow 30 50 metre intervals Gradient 1 100 Gradient 1 100 Trap set Trap set Trap s...

Page 7: ...not over tighten Use correct torque figures 1 1 4 2 3 8 2 6 3 7 Flange bolts should be gradually tightened across diameters to ensure even load and alignment Guides Guides Limit rods Limit rods Fixing...

Page 8: ...The Spirax Sarco HM34 series inverted bucket trap is similar to the HM Series but is manufactured in carbon steel and will operate on steam pressures up to 32 bar g 464 psi g Note For further informat...

Page 9: ...NPT and socket weld ends BS 3799 Class 3000 DN15 DN20 and DN25 standard flange BS 4504 PN40 Flanges also available ANSI 150 and ANSI 300 2 3 Materials Trap HM Series HM34 Series Cover Cast iron Cast s...

Page 10: ...HM003 7 HM003 6 DN20 HM103 10 HM103 8 HM103 7 DN25 HM123 12 HM123 10 HM123 7 Note The pressure limit of the flange type should be greater than the pressure limit of the internal mechanism selected 2...

Page 11: ...d steam 32 bar g 464 bar g PMX Maximum differential pressure Size Maximum differential pressure bar 4 8 5 12 20 32 DN15 HM34 8 HM34 7 HM34 6 HM34 5 HM34 4 DN20 HM34 10 HM34 8 HM34 7 HM34 6 HM34 5 DN25...

Page 12: ...steam being turned on to avoid steam blowing through the trap 3 5 Inverted bucket steam traps do not permit rapid release of air On process applications in particular this can lead to slow warm up tim...

Page 13: ...IM S03 11 CMGT Issue 5 13 HM and HM34 Inverted Bucket Steam Traps Fig 5 Fig 6 Air vent Bypass HM trap Check valve Check valve HM trap...

Page 14: ...oing the two screws 5 Remove the seat 8 from the cover Ensure all joining faces are clean and then screw in the new seat to the recommended tightening torque Use a small amount of joining paste on the...

Page 15: ...ecommended tightening torques Item no or mm Nm lbf ft 2 HM and M6 x 25 15 16 11 12 1 M12 x 45 85 95 61 68 HM34 and M8 x 30 25 28 18 20 1 M12 x 45 25 28 18 20 8 HM and 13 50 55 36 40 1 13 80 88 57 63 H...

Page 16: ...8 10 Bucket 4 Cover gasket and ferrule packet of 3 each 7 11 Strainer screen 12 Strainer screen gasket packet of 3 14 Set of cover bolts and nuts set of 6 HM34 only 2 How to order spares Always order...

Page 17: ...IM S03 11 CMGT Issue 5 17 HM and HM34 Inverted Bucket Steam Traps 12 14 7 11 10 8 5 6 4 2 2 13 Fig 8 HM Series shown Valve seat assembly...

Page 18: ...IM S03 11 CMGT Issue 5 18 HM and HM34 Inverted Bucket Steam Traps...

Page 19: ...IM S03 11 CMGT Issue 5 19 HM and HM34 Inverted Bucket Steam Traps...

Page 20: ...IM S03 11 CMGT Issue 5 20 HM and HM34 Inverted Bucket Steam Traps...

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