Enerpac MITT Series Operation And Maintenance Manual
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Enerpac MITT Series Operation And Maintenance Manual

Enerpac MITT Series Operation And Maintenance Manual

Mechanical isolation & test tools
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Operation and Maintenance Manual
Enerpac MITT Series
Mechanical Isolation & Test Tools
Document Number: L4473
Document Revision: D
Document Revision Date: 28 Feb 2022
Document Language: ENGLISH EN
To reduce the risk of injury, user must read and understand this document before use.

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  • Page 1 Operation and Maintenance Manual Enerpac MITT Series Mechanical Isolation & Test Tools Document Number: L4473 Document Revision: D Document Revision Date: 28 Feb 2022 Document Language: ENGLISH EN To reduce the risk of injury, user must read and understand this document before use.

  • Page 2: Table Of Contents

    TECHNICAL DATA ............................ 17 TOP LEVEL ASSEMBLIES ........................24 10.0 REPAIR PARTS LIST ..........................27 11.0 APPENDIX A - TOOL AND STANDARD PRESSURE GUIDE ..............38 For other languages go to www.enerpac.com. Para otros idiomas visite www.enerpac.com. Para outros idiomas consulte www.enerpac.com. L4473_d...

  • Page 3: Introduction

    In the event of any questions or concerns vapor barrier to allow hot work to safely take place and arising, contact Enerpac or a local Enerpac distributor verifies the integrity of a newly welded or formed joint for clarification.
  • Page 4 • During isolations, pressure upstream of tool must Enerpac has designed and constructed the be verified / monitored constantly to ensure no MITT series tools to minimize the possibility of pressure build up. an incendiary spark that may be caused by the •...

  • Page 5: Features And Components

    3.0 FEATURES AND COMPONENTS 3.1 Single Bolt Configuration 1 2 3 Key: 1. Nut 2. Washer 3. Collar 4. Spacer 5. Annular Ring 6. Mandrel 7. Seal Set 8. Internal Seal 9. Backing Rings Figure 1: Single Bolt Component Overview (Patent pending) 3.2 Multi-Bolt Configuration Key: 1.

  • Page 6: Preparation

    4.0 PREPARATION on test pressures, extrusion gap and pipe conditions but may typically last between 5 and 10 uses. 4.1 Pre-Job Considerations Reference Appendix A: Tool Standard Pressure Guide MITT components / assemblies may require lifting. for tool / seal compatibility. Ensure that there is adequate lifting equipment, 4.2.2 Gauge Selection...

  • Page 7: Operation

    For isolations / vapor barriers, steel hard line extensions shall be connected directly to the MITT Enerpac’s In-line Weld Test Tools feature double to transition past the heat affected zone due to block and bleed isolation. Once set in position these...
  • Page 8 • Only trained installers are authorized to monitor isolation. connect a supply hose to the inlet (lower) fitting on the Enerpac™ MITT and open the inlet valve. • No hot work can be performed in the affected area unless isolation tool seal is checked and monitoring...
  • Page 9 (if required) as per Appendix A: Tool and Seal the seals will be damaged, unable to retain test Index Table. pressure, and will cause the Enerpac MITT to Insert and position the MITT tool such that the become stuck within the pipe.
  • Page 10 11. Disconnect gauge and pump hose assemblies. 12. Loosen the fasteners. Note that with multi-bolt tools to loosen no more than 3 turns per fasteners to evenly unload the torque and not overload a single stud. 13. Remove the tool from the pipe. 14.
  • Page 11 MITT tools MITT series tools for isolations and pressure tests. Each to perform safe isolations and pressure testing. kit is split into the subassemblies laid out below. Some...
  • Page 12 All subassemblies must be tightened as per Figure 6 and Figure 7 in accordance with standard hand tightening specifications. All threaded connections require Teflon tape or thread sealant. *Note the MITTAK Ancillaries Kit does not include the pump. To source a pump from Enerpac, please order components listed in Table 2.
  • Page 13 Items which are not included in the MITTAK Ancillaries Kit, but can be supplied if required, are listed below. Table 2: Parts List for Pump, Hose and Reservoir Integration Part No Top Level Description MP350 Multifluid Hydraulic Hand Pump, two speed, 350 bar MP-10T Reservoir Kit H9206Q...

  • Page 14: Maintenance

    MITT equipment must only be serviced by a NOTICE be carried out or contact your local Enerpac repair qualified Enerpac technician. For repair service, contact center. the Enerpac Authorized Service Center in your area.

  • Page 15: Troubleshooting

    7.0 TROUBLESHOOTING 7.1 Hydrostatic Isolation Tool Fault Possible Cause Corrective Action Loss hydrostatic Hydrostatic barrier Stop any hot work pressure. lost. Medium is leaking Investigate the source of pressure loss. If the medium is leaking from the tool through the from: Effect: The tool will still hose assembly or either...
  • Page 16 7.2 Hydrodynamic Isolations Fault Possible Cause Corrective Action Back pressure indicated on There is an increase in pressure in If any pressure is noted on the vent gauge: through-port vent gauge. the venting assembly of the isolation Do not turn off the water. tool.
  • Page 17 7.3 Pressure Testing - Hydrostatic Testing Fault Possible Cause Corrective Action Loss of or dropping hydrostatic Hydrostatic pressure lost Investigate the source of the pressure pressure dropping. Medium is leaking from loss. the tool through the hose assembly, If the medium is leaking from: Effect: Hydrostatic test pressure ancillaries or either through the front unable to be achieved and/...
  • Page 18 In cases where excessive pipe wall pitting is found: • A lower durometer seal material may be required. This may cause depreciated test pressure capabilities. • Consult Enerpac technical support for seal selection and availability. Excessively Uninstall MITT and inspect testing area.

  • Page 19: Technical Data

    Pressure between seals up to this value can be achieved with optional seal backing rings and higher shore hardness seals. In-field conditions may not allow these pressures to be achieved. Always ensure weld test pressure used never exceeds safe pipe loading. Refer to the MITT Series - Seal Selection Guide document in Appendix A for capabilities at each pipe schedule and recommended seals and seal backing rings.
  • Page 20 Single Bolt Specifications (0.5” - 2”) continued *** Tool Standard Pipe Stud Overall Max. Nominal Torque Pressure Pressure Schedules Seals Seal Backers Length Weight Pressure Pipe Rating Rating Part No. Covered included included Port Size (Out of Washer Size Stud ...
  • Page 21 8.2 Multi-Bolt Specifications (3” - 40”) *** Figure 10: Multi-Bolt 4” Representation Tool Pipe Stud Standard Overall Nominal Pressure Seal Maximum Pressure Schedules Torque Seals Weight Length Pressure Pipe Rating Port Backers Part No. Covered included Washer Rating per Stud (Out of the Size Size...
  • Page 22 Multi-Bolt Specifications (3” - 40”) continued *** Overall Tool Pipe Stud Standard Torque Pressure Nominal Maximum Pressure Length Schedules OD (A) Seals Seal Backers Weight Pressure Pipe Rating Port Part No. Covered included included Washer Rating (Out of the Size Stud Size box)
  • Page 23 Multi-Bolt Specifications (3” - 40”) continued *** Figure 11: Multi-Bolt 16” Representation Tool Pipe Stud Overall Standard Nominal Torque Seal Maximum Pressure Schedules Pressure Seals Weight OD (A) Length Pressure Pipe Rating Backers Part No. Covered Washer Port Size included Rating (Out of the Size...
  • Page 24 Multi-Bolt Specifications (3” - 40”) continued *** Tool Pipe Stud Standard Nominal Seal Overall Maximum Pressure Schedules Torque Pressure Seals Weight OD (A) Pressure Pipe Rating Backers Length Part No. Covered Washer per Stud Port Size included Rating (Out of the Size included in [mm]...
  • Page 25 Multi-Bolt Specifications ( 24” - 40”) continued *** Tool Pipe Stud Overall Standard Nominal Seal Maximum Pressure Schedules Torque Pressure Seals Length Weight OD (A) Pressure Pipe Rating Backers Part No. Covered Washer per Stud Port Size included Rating (Out of the Size included in [mm]...

  • Page 26: Top Level Assemblies

    9.0 TOP LEVEL ASSEMBLIES 9.1 Single Bolt Top Level Assemblies Figure 12: Typical Single Bolt Configuration for Sizes 0.5” - 2” (excluding Seals) Part Number Description MITT050A 0.50” A TOOL COVERS PIPE SCHDS 5 TO 80 TO 4500 PSI MAX MITT050B 0.50”...
  • Page 27 9.2 Multi Bolt Top Level Assemblies Figure 13: Typical Multi Bolt Configrations (excluding Seals) Part Number Description MITT3A 3” A TOOL COVERS PIPE SCHDS 5 TO 80 TO 4500 PSI MAX MITT3B 3” B TOOL COVERS PIPE SCHDS 160 TO XXS TO 4500 PSI MAX MITT4A 4”...
  • Page 28 Multi Bolt Top Level Assemblies continued Part Number Description MITT20A 20” A TOOL COVERS PIPE SCHDS 10 TO 30 TO 4500 PSI MAX MITT20B 20” B TOOL COVERS PIPE SCHDS 40 TO 60 MITT20C 20” C TOOL COVERS PIPE SCHDS 80 TO 100 MITT20D 20”...

  • Page 29: Repair Parts List

    The following components cannot be ordered separately: Top plates, back plates, annular rings, collars, spacers, and mandrels. Repairs to these components must be completed by an Enerpac Authorized Service Center. If repairs are not possible, a replacement MITT tool will be required.
  • Page 30 MITT3A10SK 3" A O-RING SEAL SCH 10 PIPE - SET OF 2 MITT3ASTD-40SK 3" A O-RING SEAL SCH STD/40 PIPE - SET OF 2 MITT3AXS-80SK 3" A O-RING SEAL SCH XS/80 PIPE - SET OF 2 MITT3B160SK 3" B O-RING SEAL SCH 160 PIPE - SET OF 2 MITT3BXXSSK 3"...
  • Page 31 External Seal Kits (Shore 70) - continued Part Number Description MITT12A10SK 12" A O-RING SEAL SCH 10 PIPE - SET OF 2 MITT12A20SK 12" A O-RING SEAL SCH 20 PIPE - SET OF 2 MITT12A30SK 12" A O-RING SEAL SCH 30 PIPE - SET OF 2 MITT12ASTDSK 12"...
  • Page 32 External Seal Kits (Shore 70) - continued Part Number Description MITT18A10SK 18" A O-RING SEAL SCH 10 PIPE - SET OF 2 MITT18A20SK 18" A O-RING SEAL SCH 20 PIPE - SET OF 2 MITT18ASTDSK 18" A O-RING SEAL SCH STD PIPE - SET OF 2 MITT18A30SK 18"...
  • Page 33 External Seal Kits (Shore 70) - continued Part Number Description MITT26A10SK 26" A O-RING SEAL SCH 10 PIPE - SET OF 2 MITT26ASTDSK 26" A O-RING SEAL SCH STD PIPE - SET OF 2 MITT26AXSSK 26" A O-RING SEAL SCH XS PIPE - SET OF 2 MITT30A10SK 30"...
  • Page 34 10.3 Seal Backing Ring Kits Part Number Description MITT050A5BR 0.5” A O-RING SEAL SCH 5 PIPE - SET OF 2 MITT050A10BR 0.5” A O-RING SEAL SCH 10 PIPE - SET OF 2 MITT050ASTD-40BR 0.5” A O-RING SEAL SCH STD/40 PIPE - SET OF 2 MITT050AXS-80BR 0.5”...
  • Page 35 Seal Backing Ring Kits - continued Part Number Description MITT4A5BR 4" A BACKING RING SCH 5 PIPE - SET OF 2 MITT4A10BR 4" A BACKING RING SCH 10 PIPE - SET OF 2 MITT4ASTD - 40BR 4" A BACKING RING SCH STD / 40 PIPE - SET OF 2 MITT4A60BR 4"...
  • Page 36 Seal Backing Ring Kits - continued Part Number Description MITT12A10BR 12" A BACKING RING SCH 10 PIPE - SET OF 2 MITT12A20BR 12" A BACKING RING SCH 20 PIPE - SET OF 2 MITT12A30BR 12" A BACKING RING SCH 30 PIPE - SET OF 2 MITT12ASTDBR 12"...
  • Page 37 Seal Backing Ring Kits - continued Part Number Description MITT18A10BR 18" A BACKING RING SCH 10 PIPE - SET OF 2 MITT18A20BR 18" A BACKING RING SCH 20 PIPE - SET OF 2 MITT18ASTDBR 18" A BACKING RING SCH STD PIPE - SET OF 2 MITT18A30BR 18"...
  • Page 38 MITT40ASTDBR 40" A BACKING RING SCH STD PIPE - SET OF 2 MITT40AXSBR 40" A BACKING RING SCH XS PIPE - SET OF 2 10.4 Ancillary Kit Part Number Description MITTAK ANCILLARIES KIT FOR MITT SERIES TOOLS (W/O PUMP) L4473_d...
  • Page 39 This page has been left intentionally blank L4473_d...

  • Page 40: Appendix A - Tool And Standard Pressure Guide

    11.0 APPENDIX A - TOOL AND STANDARD PRESSURE GUIDE Key to Table Symbols BN 70: Buna Nitrile, Shore Hardness 70 Seals SB: Seal Backing Rings BN 90: Buna Nitrile, Shore Hardness 90 Seals √: Required √√: Two sets are required Pipe Pipe Pipe Wall...
  • Page 41 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 √ √ MITT075A5SK MITT075A5BR MITT075A5-90SK √ √ MITT1B-075-5SK MITT1B-075-5BR MITT1B-075-5-90SK √ √ MITT075A10SK MITT075A10BR MITT075A10-90SK √...
  • Page 42 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 MITT150A √ √ √ 0.065 MITT2B √...
  • Page 43 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT150A5SK MITT150A5BR MITT150A5-90SK MITT2B-150-5SK MITT2B-150-5BR MITT2B-150-5-90SK MITT150A10SK MITT150A10BR MITT150A10-90SK MITT2B-150-10SK MITT2B-150-10BR MITT2B-150-10-90SK √ √...
  • Page 44 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 0.083 MITT4A √ 0.120 MITT4A √...
  • Page 45 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT4A5SK MITT4A5BR MITT4A5-90SK MITT4A10SK MITT4A10BR MITT4A10-90SK MITT4ASTD-40SK MITT4ASTD-40BR MITT4ASTD-40-90SK √ √ MITT4A60SK MITT4A60BR MITT4A60-90SK √...
  • Page 46 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 MITT10A √ √ 0.165 MITT12C √...
  • Page 47 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT10A10SK MITT10A10BR MITT10A10-90SK MITT12C-10-10SK MITT12C-10-10BR MITT12C-10-10-90SK MITT10A20SK MITT10A20BR MITT10A20-90SK MITT12C-10-20SK MITT12C-10-20BR MITT12C-10-20-90SK MITT10A30SK MITT10A30BR MITT10A30-90SK MITT12C-10-30SK...
  • Page 48 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 MITT14A √ √ √ 0.250 MITT16C √...
  • Page 49 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT14A10SK MITT14A10BR MITT14A10-90SK MITT16C-14-10SK MITT16C-14-10BR MITT16C-14-10-90SK MITT14A20SK MITT14A20BR MITT14A20-90SK MITT16C-14-20SK MITT16C-14-20BR MITT16C-14-20-90SK MITT14ASTD-30SK MITT14ASTD-30BR MITT14ASTD-30-90SK MITT16C-14-STD-30SK...
  • Page 50 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 MITT18A √ √ 0.250 MITT20C √...
  • Page 51 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT18A10SK MITT18A10BR MITT18A10-90SK MITT20C-18-10SK MITT20C-18-10BR MITT20C-18-10-90SK MITT18A20SK MITT18A20BR MITT18A20-90SK MITT20C-18-20SK MITT20C-18-20BR MITT20C-18-20-90SK MITT18ASTDSK MITT18ASTDBR MITT18ASTD-90SK MITT20C-18-STDSK...
  • Page 52 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 MITT22A √ 0.375 MITT22A √...
  • Page 53 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT22ASTDSK MITT22ASTDBR MITT22ASTD-90SK MITT24C-22-STDSK MITT24C-22-STDBR MITT24C-22-STD-90SK MITT22AXSSK MITT22AXSBR MITT22AXS-90SK MITT24C-22-XSSK MITT24C-22-XSBR MITT24C-22-XS-90SK MITT22B60SK MITT22B60BR MITT22B60-90SK MITT24D-22-60SK...
  • Page 54 Tool and Standard Pressure Guide continued Pipe Pipe Pipe Wall MITT TOOL 425PSI 1150 psi 2250 psi Size Thickness Part Number INCH ASME INCH BN 70 BN 90 BN 70 BN 90 BN 70 BN 90 0.312 MITT32A √ √ 0.375 MITT32A √...
  • Page 55 Buna 70 Seal Seal Backing Rings Buna 90 Seals 3300 psi 4500 psi Part Number Part Number Part Number BN 70 BN 90 BN 70 BN 90 MITT32A10SK MITT32A10BR MITT32A10-90SK MITT32ASTDSK MITT32ASTDBR MITT32ASTD-90SK MITT32AXS-20SK MITT32AXS-20BR MITT32AXS-20-90SK MITT32A30SK MITT32A30BR MITT32A30-90SK MITT32B40SK MITT32B40BR MITT32B40-90SK MITT36A10SK...
  • Page 56 © 2022 Enerpac Tool Group, All Rights Reserved.

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