Definox DCX3 Clean Flush Maintenance Manual
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Definox DCX3 Clean Flush Maintenance Manual

Shut-off valve
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MAINTENANCE MANUAL
SHUT-OFF VALVE DCX3 CLEAN FLUSH
www.definox.com
NM-288
index 01
Page 1/19
October 2023

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Summary of Contents for Definox DCX3 Clean Flush

  • Page 1 MAINTENANCE MANUAL SHUT-OFF VALVE DCX3 CLEAN FLUSH www.definox.com NM-288 index 01 Page 1/19 October 2023...

  • Page 2: Table Of Contents

    3.2 DISASSEMBLING THE ACTUATOR (changing the inner gaskets) 3.2.1 Safety devices 4 VALVE DISASSEMBLING 4.1 DISASSEMBLING THE SIGNALING BLOCK 4.2 DISASSEMBLING THE COLLAR CLAMPS OF THE DCX3 CLEAN FLUSH VALVE 4.3 DISMANTLING THE DCX3 CLEAN FLUSH SECTION 4.4 DISASSEMBLING THE ACTUATOR 4.4.1 Disassembling the accessories 4.4.2 Disassembling the internal parts of the actuator...

  • Page 3: Change Management

    MAINTENANCE MANUAL 1 CHANGE MANAGEMENT MODIFICATIONS INDEX DATE PAGES New edition October 2023 G. BEGAUD NM-288 index 01 Page 3/19 October 2023...

  • Page 4: Safety

    MAINTENANCE MANUAL 2 SAFETY IMPORTANT INFORMATION Always read the maintenance manual before manipulating the valve Failure to observe these instructions can result in serious bodily injury or loss of life. DANGER! This can 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

    MAINTENANCE INSTRUCTIONS DCX3 shut-off valve CLEAN FLUSH 3 INTRODUCTION The disassembly of a DCX3 Clean Flush shut-off valve is divided into 2 distinct steps: DISASSEMBLING THE VALVE (remove the body, actuator and section) This operation allows access to the isolating gaskets (Change gaskets, see section 6.6 for lubrication) and to remove the actuator.

  • Page 6: Safety Devices

    MAINTENANCE MANUAL 3.2.1 Safety devices For the maintenance of NC and NO actuators, we offer maintenance kits on request, which prevent unintentional operation of the valve when the actuator is supplied with air. DCX3 NC (rod out) SOLUTIONS RISKS DANGER! Maintenance tools for NC actuator When changing the gaskets: Risk of fingers being pinched between the...

  • Page 7: Valve Disassembling

    MAINTENANCE MANUAL 4 VALVE DISASSEMBLING If the valve is fitted with a signalling box, it may be necessary for disassembly to first separate the signalling assembly from the actuator. DISASSEMBLING THE SIGNALING BLOCK Disassembling 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 8: Disassembling The Collar Clamps Of The Dcx3 Clean Flush Valve

    • Disassemble the collar clamp [05]. • Cut the air to the pneumatic actuator (the valve returns to the closed position). • Remove the assembly section (pneumatic actuator) [A] from the DCX3 Clean Flush body [01] or [02]. • Dismantle the collar clamp [05 bis], remove the flange [14] and the removable plate [13].

  • Page 9: Dismantling The Dcx3 Clean Flush Section

    MAINTENANCE MANUAL DISMANTLING THE DCX3 CLEAN FLUSH SECTION • Unscrew the leakage extension [07]. • Unscrew the diaphragm valve [03] by hand, then remove the intermediate piece [06] and the gasket plate [08]. • Unscrew the M12 insert valve [04] using the two operating plates located on it and on the actuator rod.

  • Page 10: Disassembling The Internal Parts Of The Actuator

    MAINTENANCE MANUAL 4.4.2 Disassembling the internal parts of the actuator ATTENTION: This operation is dangerous if the tools are not suitable. We recommend the use of a hydraulic press or tools as shown in the diagram below (when using the tools, account for a spring relaxation stroke of 100 mm) DANGER! With the actuator placed vertically:...

  • Page 11: Changing The Seals And Reassembling

    The components of our valves are listed and marked in these instructions. You can find there the information you need to order spare parts. ASSEMBLING THE ACTUATOR WARNING: When assembling the actuator for the DCX3 Clean Flush, do not forget to insert the shim [16]. CAUTION! N.B.: For your safety, make sure that the ring is correctly positioned in its groove.

  • Page 12: Reassembling The Dcx3 Clean Flush Valve

    MAINTENANCE MANUAL REASSEMBLING THE DCX3 CLEAN FLUSH VALVE This is the reverse of disassembling. The following advice should be followed: • Screw the diaphragm valve onto the M12 valve insert as far as it will go. • We recommend using a medium threadlocker glue to secure the M12 valve insert when reassembling it on the actuator, and to retighten the M12 valve insert on the valves after an initial temperature run.

  • Page 13: Spare Parts

    MAINTENANCE MANUAL 6 SPARE PARTS DCX3 CLEAN FLUSH ACTUATOR Seal kit family: NM-288 index 01 Page 13/19 October 2023...

  • Page 14: Dcx3 Clean Flush Valve

    MAINTENANCE MANUAL DCX3 CLEAN FLUSH VALVE Seal kit family: (Depending on material grade) 05 bis DCX3 NM-288 index 01 Page 14/19 October 2023...

  • Page 15: Spare Parts List Dcx3 Automatic Clean Flush Dn25 Sms

    MAINTENANCE MANUAL SPARE PARTS LIST DCX3 AUTOMATIC CLEAN FLUSH DN25 SMS Description Nb DN25 SMS 7304503 DCX3 Clean Flush L-shaped body 7304504 DCX3 Clean Flush T-shaped body 7304295 DCX3 Full Diaphragm Valve 7303666 M12 insert Full Diaphragm valve 7441832 Collar clamp...

  • Page 16: List Of Actuators For Dcx Automatic Seat Valve

    DETAILS OF SEAL KITS FOR DCX3 VALVES DESCRIPTION DN 25 SMS Actuator seal kit DCX3 standard & diaphragm 7070601 (DN51 Actuator) EPDM Process seal kit DCX3 Clean Flush 7072384 Process seal kit DCX3 Clean Flush 7072401 NM-288 index 01 Page 16/19...

  • Page 17: Seal Kits Nbr Fordcx3 Actuator Standard & Diaphragm

    Seal reference Lantern O-ring 7380160 7380161 Piston O-ring O-ring of lantern and actuator barrel 7380152 Lantern and actuator barrel segment 7009972 Process seal kit EPDM DCX3 Clean Flush : 6.5.2 DN25 SMS Diameter Pouch N° 7072384 Description Seal reference 7304295...

  • Page 18: Greases Reference

    MAINTENANCE MANUAL Greases reference Description Grease cartridge 400 g Grease for actuator seals 7010662 (4025 H1 QUINPLEX) Grease cartridge 500 g Grease for valve seals 7030668 (Kluber Paraliq GTE 703, NFS H1, 21 CRF § 178.3570) NM-288 index 01 Page 18/19 October 2023...
  • Page 19 New Berlin – WISCONSIN 53151 – USA Phone: (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 Phone: (86) 10.6293.4909 - Fax: (86) 10.6293-4835 The technical characteristics of the products in this document are given as an indication and can be modified according to technological developments.

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