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Definox VEOX PMO Maintenance Notice

Independent seat mixproof valves
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MAINTENANCE NOTICE
VEOX PMO INDEPENDENT SEAT MIXPROOF VALVES
www.definox.com
NM-282
Revision 02
Page 1/31
March 2023

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Summary of Contents for Definox VEOX PMO

  • Page 1 MAINTENANCE NOTICE VEOX PMO INDEPENDENT SEAT MIXPROOF VALVES www.definox.com NM-282 Revision 02 Page 1/31 March 2023...

  • Page 2: Table Of Contents

    6.2 SPARE PARTS FOR VEOX PMO ACTUATOR (Seal kits § 6.8.2) 6.3 SPARE PARTS FOR VEOX PMO PLUG SUB-ASSEMBLY: ELASTOMER / ELASTOMER (Seal kits § 6.8.3, § 6.8.4) 6.4 SPARE PARTS FOR VEOX PMO BODY SUB-ASSEMBLY (Seal kits § 6.8.3 to § 6.8.4) 6.5 SPARE PARTS FOR VEOX PMO PLUG BREAKAWAY DETECTION OPTION...

  • Page 3: Change Management

    MAINTENANCE NOTICE 1 CHANGE MANAGEMENT CHANGES INDEX DATE PAGES INITIALS New version January 2023 G. BEGAUD Additions note and modification Ref: 52 DN1’’ US to 2’’US March 2023 14/25/26-27 G. BEGAUD NM-282 Revision 02 Page 3/31 March 2023...

  • Page 4: Safety

    MAINTENANCE NOTICE 2 SAFETY IMPORTANT INFORMATION Always read the maintenance notice before working on the valve Failure to observe these instructions can result in serious bodily injury or loss of life. DANGER! This can also result in less serious injuries or damage to the equipment. CAUTION! Electricity can result in serious bodily injury or loss of life.

  • Page 5: Introduction

    This operation must be performed using a special tool ensuring that the necessary precautions are taken. (CAUTION: stressed spring) CAUTION! NOTE: After carrying out any maintenance work on DEFINOX products it is essential that you check the correct function of the equipment concerned: tightness, pressure, etc. IMPORTANT CAUTION: In the lower section of the valve, NEVER BLOCK or RESTRICT the flow from the LEAKAGE CHAMBER.

  • Page 6: Disassembling The Valve

    MAINTENANCE NOTICE 4 DISASSEMBLING THE VALVE Before starting the disassembly procedure, if the valve is fitted with a signalling unit it may be necessary to detach the signalling system from the actuator. DISMANTLING THE SIGNALLING BOX Dismantling without disconnection CAUTION: Before starting any work on the box, it is important to ensure that the air supply is closed and that the circuit is purged.

  • Page 7: Body And Plug

    • Interrupt the air supply to the actuator (the valve returns to a closed position). • Remove the isolation (pneumatic actuator) assembly [A] from the body of the VEOX PMO [45]. • Disassemble the lower clamp collar [46] and remove the protector [47].

  • Page 8: Disassembling The Veox Breakaway Actuator (To Change The Seals And Rings If Required)

    MAINTENANCE NOTICE DISASSEMBLING THE VEOX BREAKAWAY ACTUATOR (to change the seals and rings if required) • Remove the screws [33] attaching the breakaway actuator body [28]. • Unscrew the lower plug breakaway piston shaft [30]. • Remove the breakaway piston rod [31]. •...

  • Page 9: Disassembling Veox Pmo Lower Plugs

    MAINTENANCE NOTICE DISASSEMBLING VEOX PMO LOWER PLUGS • Screw the protection screw [79] onto the actuator rod [1] to protect the tapped hole. • Using a plug valve wrench [75] on the lower plug side [58] and the holding wrench [77] on the flats on the actuator rod side [1], unscrew the lower plug sub-assembly of the pneumatic actuator [55].

  • Page 10: Disassembling The Veox Pmo Upper Seal Support Plate And Plugs

    MAINTENANCE NOTICE DISASSEMBLING THE VEOX PMO UPPER SEAL SUPPORT PLATE AND PLUGS: • Unscrew the 2 fastening screws [40] in order to remove the lantern protection plate [39]. • Unscrew the indexing screw [52]. • Unscrew the two fastening screws [51].

  • Page 11: Disassembling The Main Pneumatic Actuator

    MAINTENANCE NOTICE DISASSEMBLING THE MAIN PNEUMATIC ACTUATOR • Disassemble the air pipes [13] and [14] from the upper plug supply. • Position the actuator sub-assembly [55] on the press. (See drawing below). • Ensure that the stroke of the press is adapted to dimensions [A] and [B]. •...

  • Page 12: Disassembling The Lantern Sub-Assembly

    MAINTENANCE NOTICE DISASSEMBLING THE LANTERN SUB-ASSEMBLY • Hold the clamp pin [8] with the clamp pin guide [78] held in a vice. • Unscrew the breakaway piston nut [6] using a plug valve wrench [76]. • Release the nut [6], the breakaway piston [7] and the clamp pin [8] on the lantern assembly [9].

  • Page 13: Disassembling The Shaft/Piston Sub-Assembly

    MAINTENANCE NOTICE DISASSEMBLING THE SHAFT/PISTON SUB-ASSEMBLY • Screw the protection screw [79] onto the actuator rod [1] to protect the tapped hole. • Release the set screw [4] on the nut [3]. • Unscrew the main piston [5] screw [3] using a plug valve wrench [76] and the holding wrench [77].

  • Page 14: Reassembling The Veox Pmo Valve

    5 REASSEMBLING THE VEOX PMO VALVE REPLACING FAULTY COMPONENTS OR SEALS ON THE PLUGS 5.1.1 CHANGING THE PLUG SEALS ON THE VEOX PMO PLUGS. CAUTION: It is essential that you disassemble the lower plug before replacing the seals located on the upper plug.
  • Page 15 MAINTENANCE NOTICE • Before replacing faulty seals on the lower plug. (See list of seals and kits at the end of the notice) • Dry fit the seal [59] on the insert [60] and fit the lightly greased assembly between marks [57] and [58].

  • Page 16: Reassembling The Veox Pmo Shaft/Piston Assembly

    MAINTENANCE NOTICE 5.1.2 REASSEMBLING THE VEOX PMO SHAFT/PISTON ASSEMBLY • Remove the O-ring seals [19] and [21] (If a replacement is required, see parts reference at the end of this notice), lubricate the seals with grease. (4025 H1 QUINPLEX type by Lubrication Engineers, see § 6.8.5) •...

  • Page 17: Reassembling The Veox Pmo Lantern Assembly

    MAINTENANCE NOTICE 5.1.3 REASSEMBLING THE VEOX PMO LANTERN ASSEMBLY • Remove the O-ring seals [11], [16], [17] and [27] (If a replacement is required, see parts reference at the end of this notice), lubricate the seals with grease. (4025 H1 QUINPLEX type by Lubrication Engineers, see § 6.8.5) •...

  • Page 18: Reassembling The Veox Pmo Actuator Assembly

    MAINTENANCE NOTICE 5.1.4 REASSEMBLING THE VEOX PMO ACTUATOR ASSEMBLY • Tighten the guides [74] and [72] on the shaft [1]. (See table and drawing below). • Position the spring [23] on the body [2], reassemble the shaft/piston assembly on the spring [23], position in the spring assembly [20] and thread the lantern assembly on the guide [74].

  • Page 19: Refitting The Valve Assembly On The Veox Pmo Body

    MAINTENANCE NOTICE 5.1.5 REFITTING THE VALVE ASSEMBLY ON THE VEOX PMO BODY • Check that the old seal [49] has been removed. • Lubricate the interior diameter of the new seal [49] with auxiliary silicone grease (Kluber Paraliq GTE 703 type).

  • Page 20: Veox Pmo Spare Parts

    MAINTENANCE NOTICE 6 VEOX PMO SPARE PARTS SPARE PARTS FOR VEOX PMO BREAKAWAY SUB-ASSEMBLY (Seal kits § 6.8.1) NM-282 Revision 02 Page 20/31 March 2023...

  • Page 21: Spare Parts For Veox Pmo Actuator (Seal Kits § 6.8.2)

    MAINTENANCE NOTICE SPARE PARTS FOR VEOX PMO ACTUATOR (Seal kits § 6.8.2) NM-282 Revision 02 Page 21/31 March 2023...

  • Page 22: Spare Parts For Veox Pmo Plug Sub-Assembly: Elastomer / Elastomer (Seal Kits § 6.8.3, § 6.8.4)

    MAINTENANCE NOTICE SPARE PARTS FOR VEOX PMO PLUG SUB-ASSEMBLY: ELASTOMER / ELASTOMER (Seal kits § 6.8.3, § 6.8.4) NM-282 Revision 02 Page 22/31 March 2023...

  • Page 23: Spare Parts For Veox Pmo Body Sub-Assembly (Seal Kits § 6.8.3 To § 6.8.4)

    MAINTENANCE NOTICE SPARE PARTS FOR VEOX PMO BODY SUB-ASSEMBLY (Seal kits § 6.8.3 to § 6.8.4) NM-282 Revision 02 Page 23/31 March 2023...

  • Page 24: Spare Parts For Veox Pmo Plug Breakaway Detection Option

    MAINTENANCE NOTICE SPARE PARTS FOR VEOX PMO PLUG BREAKAWAY DETECTION OPTION • Assembly with Sorio box. • Firstly, cut the metal tab using cutting pliers and deburr to remove sharp edges. Deburr Tab to be removed NM-282 Revision 02 Page 24/31...

  • Page 25: Lantern-Mounted Sensor Adjustment

    MAINTENANCE NOTICE LANTERN-MOUNTED SENSOR ADJUSTMENT NOTE: Before start lantern-mounted sensor adjustment for US1’’1/2 and US2’’, Supply air to the main air cylinder to relieve the upper clamp collar of the compression force from the spring. Disassemble the upper clamp collar [46]. IMPORTANT 1 Position the sensor support [67] at the very bottom of the lantern and tighten the 2 fastening screws [68].
  • Page 26 MAINTENANCE NOTICE 6 Position the detector adjustment shim [80] on the flat of the lantern and lower the detector support to the stop of the adjustment shim. Turning of hold 7191937 according to diameter : US1’’ US1’’1/2 US2’’ US2’’1/2 US3’’ US4’’...

  • Page 27: Veox Pmo Spare Parts Table

    7191729 7191730 7191731 7191732 7191733 VEOX PMO EPDM lower plug seat seal 7190515 7190185 7190186 7190187 VEOX PMO FKM FP83 lower plug seat seal 7190516 7190179 7190180 7190181 Seat seal insert 7007439 7007436 7007437 7007438 PTFE shaft / lower plug...

  • Page 28: References Of Seal Kits For Veox Pmo

    7190770 CBHC screw Detector adjustment shim 7191937 REFERENCES OF SEAL KITS FOR VEOX PMO 6.8.1 VEOX PMO seal kits for NBR breakaway sub-assembly (Item: 56) DN1’’ US DN1’’1/2 – 2’’ US DN2’’1/2 – 3’’ US DN4’’ US Diameter Kit No.:...

  • Page 29: Veox Pmo Epdm Body And Elastomer / Elastomer Plug Seal Kits

    EPDM shaft / upper plug R-ring 7380179 EPDM upper plug seal 7380957 7010733 7011085 6.8.4 VEOX PMO FKM FP75 body and ELASTOMER / ELASTOMER plug seal kits DN1’’1/2 – 2’’ US DN2’’1/2 – 3’’ US DN4’’ US Diameter Kit No.: 7072344...

  • Page 30: List Of Tool Case For Veox Pmo Valves

    MAINTENANCE NOTICE 6.8.6 List of tool case for VEOX PMO valves DN1’’ US DN1’’1/2 – 2’’ US DN2’’1/2 – 3’’ US DN4’’ US Diameter Kit No.: 7082847 7082852 7082848 Ref. Description Tool reference Actuator body guide 7142227 7142228 Plug protector...
  • Page 31 New Berlin – WISCONSIN 53151 – USA Tel : (1) 262 797 5730 - Fax : (1) 262 797 5735 CHINA DEFINOX Beijing Stainless Steel Equipment Ltd No 18 Anningzhuang East Road – HAIDIAN District BEIJING 100085 – CHINA Tel : (86) 10.6293.4909 - Fax : (86) 10.6293-4835 The product specifications of this document are indicative and may be modified according to technological developments.

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