Spirax Sarco 0722195 Installation And Maintenance Instructions Manual Download Page 4

IM-S03-11 

CMGT Issue 5

4

HM and HM34 Inverted Bucket Steam Traps

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 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.

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...

Reviews: