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INOXPA 74700 Installation, Service And Maintenance Instructions

Overflow valve
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INSTALLATION, SERVICE AND
MAINTENANCE INSTRUCTIONS
OVERFLOW VALVE
INOXPA, S.A.
c/Telers, 54 Aptdo. 174
E-17820 Banyoles
Girona (Spain)
Tel. : (34) 972 - 57 52 00
Fax. : (34) 972 - 57 55 02
Email: inoxpa@inoxpa.com
www.inoxpa.com
Original Manual
10.207.30.00EN_RevC
ED. 2010/11

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Summary of Contents for INOXPA 74700

  • Page 1 INSTALLATION, SERVICE AND MAINTENANCE INSTRUCTIONS OVERFLOW VALVE INOXPA, S.A. c/Telers, 54 Aptdo. 174 E-17820 Banyoles Girona (Spain) Tel. : (34) 972 - 57 52 00 Fax. : (34) 972 - 57 55 02 Email: inoxpa@inoxpa.com www.inoxpa.com Original Manual 10.207.30.00EN_RevC ED. 2010/11...
  • Page 2 INOXPA, S.A. c/ Telers, 57 17820 Banyoles (Girona), Spain herewith declares that the machine: OVERFLOW valve 74700 with the serial number: ________________ conforms to the relevant provisions of the following directives: Machinery Directive 2006/42/EC (RD 1644/2008) Pressure equipment Directive 97/23/EC...

  • Page 3: Safety

    Compulsory requirement to ensure safety Use of goggles is compulsory. at work 1.4. GENERAL SAFETY INSTRUCTIONS. Read the instruction manual carefully before installing and starting up the valve. Contact INOXPA in case of doubt 1.4.1. During the installation. Technical Specifications of Chapter 8 should always be observed.

  • Page 4: Guarantee

     The repairs are not carried out by our personnel or have been carried out without our written authorisation.  The parts used are not INOXPA original parts.  Modifications have been carried out on our materials without written authorisation.

  • Page 5: Table Of Contents

    6.1. General information ..................... 11 6.2. Maintenance........................ 11 6.3. Cleaning........................12 Assembly and disassembly 7.1. Disassembly / assembly of the overflowvalve fig: 74700 ..........13 7.2. Disassembly / assembly of the overflowvalve fig: 74700m..........14 Technical Specifications 8.1. Overflow valve dimensions.................... 17 8.2.

  • Page 6: Receiving And Installation

    The first thing to do on receiving the valve is to verify that it is matches the delivery note. INOXPA will inspect all the equipment before packing, although it cannot guarantee that the merchandise will arrive intact to the user. For this reason, the valve received and any other article should be checked and, if it is found not to be in good condition and/or not all parts are included, the carrier should submit a report as soon as possible.

  • Page 7: Location

    The buyer or user will be responsible for the assembly, installation, starting and operation of the valve. 3.4. LOCATION. Place the valve in such a way as to facilitate inspections and checks. Leave sufficient space around the valve for appropriate inspection, separation and maintenance (See Section 3.7.1).

  • Page 8: Inspecting And Checking

    The welding work can only be carried out by people qualified, trained and equipped with the necessary means to carry out this work. Disassemble the valve before starting the welding work. 3.9.1. Welding ende overflow valve . 74700 Assembly and disassembly ...

  • Page 9: Star-Up

    This equipment is suitable for his use in food process. Overflow valves of type 74700 and 74700M are basically used to avoid any excessive pressure in the pipes, particularly in positive-displacement pumps, in order to prevent any over-pressures that may damage the concerned equipment (bypass assembly).

  • Page 10: Operating Problems Causes And Solutions

    5. Operating problems. Causes and solutions PROBLEM CAUSE/EFFECT SOLUTION  Clean the body and seat. Dirt / foreign matter between the seal of the shaft and the seat of the valve body.  Increase the tightening torque of VALVE DOES NOT the springs.

  • Page 11: Maintenance

    6. Maintenance 6.1. GENERAL INFORMATION This valve, just like any other machine, requires maintenance. The instructions contained in this manual cover the identification and replacement of spare parts. The instructions have been prepared for maintenance personnel and for those responsible for the supply of spare parts.

  • Page 12: Cleaning

    6.2.3. Spare parts To request spare parts, it is necessary to indicate the type of valve, the position and the description of the part which can be Technical Specifications found in chapter 8. 6.3. CLEANING The use of aggressive cleaning products such as caustic soda and nitric acid may cause burns to the skin.

  • Page 13: Assembly And Disassembly

    (pos. 26C) . It is essential to release the tension in the springs before loosening the clamp. 7.1. DISASSEMBLY / ASSEMBLY OF THE OVERFLOWVALVE FIG: 74700 Disassembly Loosen the lock nut (26F).

  • Page 14: Disassembly / Assembly Of The Overflowvalve Fig: 74700M

    7.2. DISASSEMBLY / ASSEMBLY OF THE OVERFLOWVALVE FIG: 74700M. Disassembly Remove pin (50A) from the handle (04). Remove the handle (04) from the shaft (08). Loosen the lock nut (26F). Mark the position in the shaft (08) and then unscrew and release the valve nut (26C).
  • Page 15 7.3. DISASSEMBLY / ASSEMBLY OF THE OVERFLOWVALVE WITH PTFE SEAT. Disassembly Loosen the lock nut (26F). Mark the position in the shaft (08) and then unscrew and release the valve nut (26C). Remove the clamp (34). Remove the spring cover (12A). The shaft stop washer (25) and the spring (06) will be pulled out.

  • Page 16: Technical Specifications

    Tipo de conexiones Connections: Weld, FIL-IDF, BS-RJT, SMS, Clamp, Flanges, Macon Resistance of the materials / seals depends on the type of pumped product and processing conditions. Please contact INOXPA for help in making the right choice. 8.Technical Specifications ED. 2010/11...

  • Page 17: Overflow Valve Dimensions

    8.1. OVERFLOW VALVE DIMENSIONS S/S Fig 74700 AISI 316L AISI 316L 1” 22,1 274700101EB 274700025EB 1 ½” 34,8 274700112EB 274700032EB 2” 47,5 274700200EB 274700040EB 2 ½” 60,2 274700212EB 274700050EB 3” 72,9 274700300EB 274700065EB 274700080EB S/S Fig 74700M AISI 316L AISI 316L 1”...

  • Page 18: Section And Parts List

    8.2. SECTION AND PARTS LIST FIG:74700 POSITION DESIGNATION MATERIAL QUANTITY Housing AISI 316L Shaft seal EPDM Spring AISI 302 Shaft AISI 316L Shaft sleeve AISI 316L Guide bushing Iglidur G Body cap AISI 316L Spring cover AISI 304L Gasket EPDM 20B* O’ring...
  • Page 19 FIG:74700 PTFE SEAT POSITION DESIGNATION MATERIAL QUANTITY Housing AISI 316L Shaft seal Spring AISI 302 Shaft AISI 316L Shaft sleeve AISI 316L Guide bushing Iglidur G Body cap AISI 316L Spring cover AISI 304L Gasket PTFE 20B* O’ring 20C* O’ring...

  • Page 20: Parts Lists

    8.3. PARTS LIST FIG:74700 1-MU-452447 351249.6 452301A.6 452123A.6 2-MU-452448 1” 351256.6 452618A.6 452617A.6 3-MU-452599 452210.4 450890.6 1-MU-452449 2-MU-452450 351250.6 452301B.6 452123B.6 3-MU-452600 GSM1012-10 1-MU-452451 351251.6 452301C.6 452123C.6 2-MU-452452 452211.4 450891.6 1 ½” 351257.6 452618C.6 452617C.6 450811.E 3-MU-452601 1-MU-452453 351252.6 452301D.6 452123D.6...
  • Page 21 FIG:74700M 351249.6 452302A.6 452123A.6 1-MU-452448 2-MU-452599 1” 351256.6 452619A.6 452617A.6 452210.4 450890.6 1-MU-452450 351250.6 452302B.6 452123B.6 2-MU-452600 C-45082A.4 351251.6 452302C.6 452123C.6 1-MU-452452 452211.4 450891.6 2-MU-452601 1 ½” 351257.6 452619C.6 452617C.6 450811.E 351252.6 452302D.6 452123D.6 1-MU-452454 452212.4 450892.6 2-MU-452602 2” 351258.6 452619D.6 452617D.6 351253.6...
  • Page 22 FIG:74700 PTFE seat 1-MU-452447 351249.6 452301A.6 452123A.6 2-MU-452448 1” 351256.6 452618A.6 452617A.6 3-MU-452599 452210.4 450890.6 1-MU-452449 2-MU-452450 351250.6 452301B.6 452123B.6 3-MU-452600 GSM1012-10 1-MU-452451 351251.6 452301C.6 452123C.6 2-MU-452452 452211.4 450891.6 1 ½” 351257.6 452618C.6 452617C.6 450811.E 3-MU-452601 1-MU-452453 351252.6 452301D.6 452123D.6 2-MU-452454 452212.4...
  • Page 23 NOTES ED. 2010/11 8.Technical Specifications...
  • Page 24 In addition to our branch offices, INOXPA operates with an independent distributor network which encompasses a total of more than 50 countries throughout the world. For more information, please, consult our web page: www.inoxpa.com This information is for guidance only. We reserve the right to modify any material or feature without notice in advance.

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