Spirax Sarco 0722195 Installation And Maintenance Instructions Manual Download Page 8

IM-S03-11 

CMGT Issue 5

8

HM and HM34 Inverted Bucket Steam Traps

2.1 Description

The Spirax Sarco HM Series inverted bucket steam trap is manufactured in cast iron and has an integral 

strainer as standard. It is designed to be installed in horizontal pipework and will operate on steam pressures 

up to 14 bar g (203 psi g).

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 information see the following Technical Information Sheets, TI-S03-02 for the HM Series 

and TI-P072-01 for the HM34 Series, which gives full details of:- Materials, sizes and pipe connections, 

dimensions, weights, operating ranges and capacities.

 

Fig. 1 HM00 (½") and HM10 (¾")

Fig. 2 HM12 (1")

Fig. 3 HM34 (½" and ¾")

Fig. 4 HM34 (1")

2. General product 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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