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Flowserve FlowTop V726 Disassembly/Reassembly Instructions
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Flowserve FlowTop V726 Disassembly/Reassembly Instructions

Flowserve FlowTop V726 Disassembly/Reassembly Instructions

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Disassembly / Reassembly Instructions
FlowTop
V726, V738, V740

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Summary of Contents for Flowserve FlowTop V726

  • Page 1 Disassembly / Reassembly Instructions FlowTop V726, V738, V740...

  • Page 2: Table Of Contents

    Schmidt Armaturen AI - FlowTop Contents Page 1. Purpose . Use 3. Description of the Procedure 4. Disassambling the Valve 3 - 4 5. Subassembly - Body 5 - 8 6. Subassembly - Trim 30 - 3 7. Subassembly - Bonnet 34 - 59 8. Subassembly - Packing 61 - 6 9. Technical Tables - Tightening Moments 64 - 65 10. Special Tools CAUTI ON ! The Control Valve must only be disassembled and reassembled by qualified staff. Qualified staff is defined as personnel who are familiar with the disassembling, reassembling, installation and commis- sioning of this product and possess the relevant qualifications in their field of activity.

  • Page 3: Purpose

    Schmidt Armaturen AI - FlowTop 1. Purpose These instructions give guidelines on valve repair. 2. Use Type: FlowTop Valve Type: V726 V738 V740 3. Description of the Procedure CAU T I O N ! Only remove the Control Valve from the pipe in a depressurised and cooled / heated state ! 3.1 Disconnect air supply from the assembled accessories or actuator 3. Disassembling any accessories assembled...

  • Page 4: Disassambling The Valve

    Schmidt Armaturen AI - FlowTop 4. Disassembling the valve 4.1 Fix the valve on the disassembly table ! 4.2 Identify the valve using the rating plate: A rating plate is fi tted on every control valve for identifi cation. In principle there are two diff erent rating plates, their information content is however identical.
  • Page 5 Schmidt Armaturen AI - FlowTop Body Type Data Field 2 Data Field 3 Page V7xx DxVNA Three Flange 7 - 9 Four Flange V7xx VxVNA 11 - 15 V7xx WxVNA MOTP2LG Mixing 17 - 1 V7xx WxVNA VOTP2LG 3 - 8 Distributing...
  • Page 6 Schmidt Armaturen AI - FlowTop...
  • Page 7 Schmidt Armaturen AI - FlowTop Thr ee F l an g e Va lve SPM - Code : V7xx DxVNA D is asse m bly S t ep 01 • Unscrew hexagon nuts (1.4) R e asse m bly S tep 01 •...
  • Page 8 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 02 • Unscrew hexagon nuts (3.6) • Remove washer (3.8) and gland fl ange (3.4) R e asse m bly S tep 02 n ot ap p lic ab le Arranging the packing unit see S tep 07 D is asse m bly S t ep 03...
  • Page 9 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 04 • Insert Special Tool in the body (change seat - tool) and remove using a (Ensure that the pin clicks in place!) suitable tool R e asse m bly S tep 04 • Insert Special Tool in the body...
  • Page 10 Schmidt Armaturen AI - FlowTop...
  • Page 11 Schmidt Armaturen AI - FlowTop Fo ur Fla ng e Valve SPM - Code : V7xx VxVNA D is asse m bly S t ep 01 • Unsrcew hexagon nuts (1.4) R e asse m bly S tep 01 • Grease stud screws CAUT ION ! Lubrication as per Table 06 (Page 65)
  • Page 12 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 02 • Unscrew hexagon nuts (3.6) • Remove washer (3.8) and gland fl ange (3.4) R e asse m bly S tep 02 n ot ap p lic ab le S tep 07 Reassembling the packing unit see...
  • Page 13 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 03 • Twist Special Tool on the stem (Ring-nut) and put in place slowly CAUT ION ! Ensure it hangs vertically ! • Remove fl at gasket (1.2) CAUT ION ! Remove remains of fl...
  • Page 14 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 04 • Insert Special Tool in the body (change seat - tool) and remove using a (Ensure that the pin clicks in place !) suitable tool • Remove screwed seat (2.1) and profi...
  • Page 15 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 05 • Turn body • Unscrew hexagon nuts (1.4) • Remove cover (4.1) • Remove fl at gasket (1.2) CAUT ION ! Remove remains of fl at gasket (1.2) in the body and on the cover (4.1).
  • Page 16 Schmidt Armaturen AI - FlowTop...
  • Page 17 Schmidt Armaturen AI - FlowTop M ix in g Valve SPM - Code : V7xx WxVNA . . . MOTP2LG D is asse m bly S t ep 01 • Unscrew hexagon nuts (1.4) R e asse m bly S tep 01 •...
  • Page 18 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 02 • Unscrew hexagon nuts (3.6) • Remove washer (3.8) and gland fl ange (3.4) R e asse m bly S tep 02 n ot ap p lic ab le Reassembling the packing unit see S tep 07...
  • Page 19 Schmidt Armaturen AI - FlowTop D is assa m bly S t ep 03 • Lift bonnet off CAUT ION ! Do not damage stem surface ! • Remove fl at gasket (1.2) CAUT ION ! Remove remains of fl at gasket (1.2) in the body and on the bonnet.
  • Page 20 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 04 • Unscrew hexagon nuts (1.4), lift body off CAUT ION ! Ensure it hangs vertically ! • Remove fl at gasket (1.2) • Remove plug unit •...
  • Page 21 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 05 • Insert Special Tool in the body (change seat - tool) and remove using a (Ensure that the pin clicks in place !) suitable tool • Remove screwed seat (2.1) and profi...
  • Page 22 Schmidt Armaturen AI - FlowTop...
  • Page 23 Schmidt Armaturen AI - FlowTop D i stri buti n g Valve SPM - Code : V7xx WxVNA . . . VOTP2LG D is asse m bly S t ep 01 • Unscrew hexagon nuts (3.6) • Remove washer (3.8) and gland fl ange (3.4) R e asse m bly S tep 01 •...
  • Page 24 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 02.1 • Unscrew hexagon nuts (1.4) • Remove connection piece (4.2) • Remove fl at gasket (1.2) CAUT ION ! Remove remains of fl at gasket (1.2) in the body and in the connection piece.
  • Page 25 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 02.2 • Insert Special Tool in the body (stem clamping tool) and tighten (for fi xing the stem to prevent twisting) • Unscrew hexagon nuts (2.34) • Remove spring washer (2.33), V-Port plug (2.32), profi...
  • Page 26 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 03 • Unscrew hexagon nuts (1.4) R e asse m bly S tep 03 • Grease stud screws CAUT ION ! Lubrication as per Table 06 (Page 65) •...
  • Page 27 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 04 • Twist Special Tool on the stem (Ring-nut) and put in place slowly CAUT ION ! Ensure it hangs vertically ! • Remove fl at gasket (1.2) CAUT ION ! Remove remains of fl...
  • Page 28 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 05 • Insert Special Tool in the body (change seat - tool) and remove using a (Ensure that the pin clicks in place !) suitable tool • Remove screwed seat (2.1) and profi...
  • Page 29 Schmidt Armaturen AI - FlowTop...
  • Page 30 Schmidt Armaturen AI - FlowTop Trim Type Data Field 3 Disassembly / Reassembly PONx1xx Disassembly / Reassembly PODx1xx 2.1 Screwed seat Standard Parabolic Plug POKx1xx . Plug POWx1xx POHx1xx as described ! Disassembly / Reassembly 2.1 Screwed seat . Plug as described, additionally however SilentPack PKxx1xx 2.29 Internal ring .6 Perforated cage .7 Wire netting...
  • Page 31 Schmidt Armaturen AI - FlowTop Trim Type Data Field 3 Disassembly / Reassembly Disassembly / Reassembly 2.1 Screwed seat . Plug as described, additionally however PGxx1xx XStream 2.29 Internal ring PHxx1xx .30 Space bush .35 Perforated cage 1 .36 Perforated cage  .37 Perforated cage 3 .8 Pressure spring insert in the sequence shown ! Disassembly / Reassembly .38 Perforated seat cage XStream...
  • Page 32 Schmidt Armaturen AI - FlowTop Trim Type Data Field 3 Disassembly / Reassembly Disassembly / Reassembly 2.1 Screwed seat Perforated plug LOxx1xx . Perforated plug as described ! Disassembly / Reassembly 2.1 Perforated screwed seat AOxx1xx RLS-S ystem . Perforated plug as described ! Disassembly / Reassembly 2.1 Screwed seat RLS-S BOxx1xx . Perforated plug...
  • Page 33 Schmidt Armaturen AI - FlowTop...

  • Page 34: Subassembly - Bonnet

    Schmidt Armaturen AI - FlowTop Bonnet Type Data Field 2 Data Field 3 Page V7xx xxVNx 38 - 39 Standard Bonnet Standard Bonnet with V7xx xxONx 40 - 41 V-Ring Balancing V7xx xxVBx 4 - 45 Bellows Seal Bonnet High-Temperature V7xx xxVRx 46 - 47 Extension Bonnet...
  • Page 35 Schmidt Armaturen AI - FlowTop Bonnet Type Data Field 2 Data Field 3 Page High-Temperature Extension Bonnet with V7xx xxKRx 48 - 49 Piston-Ring Balancing Low-Temperature V7xx xxVKx 50 - 51 Extension Bonnet Low-Teperature Extension Bonnet with V7xx xxOKx 5 - 53 V-Ring Balancing Lantern Bonnet V7xx xxVLx 54 - 55...
  • Page 36 Schmidt Armaturen AI - FlowTop Bonnet Type Data Field 2 Data Field 3 Page Insulating Bonnet V7xx xxVIx 56 - 59 Heavy Bonnet V7xx xxSNx in preparation...
  • Page 37 Schmidt Armaturen AI - FlowTop...
  • Page 38 Schmidt Armaturen AI - FlowTop S t a n dard Bon net SPM - Code : V7xx xxVNx D is asse m bly S t ep 06 • Remove plug unit (2.2, 2.3, 2.4) from the bonnet CAUT ION ! Do not damage high quality stem surface and plug guide ! R e asse m bly...
  • Page 39 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 40 Schmidt Armaturen AI - FlowTop S t a n dard Bon net wi th V-R in g B al anc in g SPM - Code : V7xx xxONx D is asse m bly S t ep 06 • Remove plug unit (2.2, 2.3, 2.4) with balancing from the bonnet CAUT ION ! Do not damage high quality stem surface...
  • Page 41 Schmidt Armaturen AI - FlowTop D is asse m ly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 42 Schmidt Armaturen AI - FlowTop B e ll ows S ea l B onnet SPM - Code : V7xx xxVBx D is asse m bly S t ep 06 • Unscrew hexagon nuts (3.16) R e asse m bly S tep 06 •...
  • Page 43 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove head piece CAUT ION ! Ensure it hangs vertically ! • Remove gasket (2.15) CAUT ION ! Remove remains of gasket (2.15) in the body and on the head piece.
  • Page 44 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 08 • Unscrew hexagon nut (2.6) • Remove pressure ring (2.7) and profi le seal ring (2.8) CAUT ION ! The plug unit can drop down ! Do not damage the high quality stem surface ! S t ep 09 •...
  • Page 45 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 10 • Remove packing (3.3) and bottom ring (3.2 - 2x !) with Special Tool (Packing driver tool CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 10 Reassembly takes place in reverse order.
  • Page 46 Schmidt Armaturen AI - FlowTop H i gh-Tempe ratu r e E xte nsi on B onnet SPM - Code : V7xx xxVRx D is asse m bly S t ep 06 • Remove plug unit from the bonnet CAUT ION ! Do not damage high quality stem surface and plug guide ! R e asse m bly...
  • Page 47 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 48 Schmidt Armaturen AI - FlowTop H i gh-Tempe ratu r e E xte nsi on B onnet w ith P iston-R in g B al anc i ng SPM - Code : V7xx xxKRx D is asse m bly S t ep 06 •...
  • Page 49 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 50 Schmidt Armaturen AI - FlowTop Low -Tep e ra tu r e E xte nsi on B onnet SPM - Code : V7xx xxVKx D is asse m bly S t ep 06 • Remove plug unit from the bonnet CAUT ION ! Do not damage high quality stem surface and plug guide !
  • Page 51 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 52 Schmidt Armaturen AI - FlowTop Low -Temp era tu r e E xte nsi on B onnet w ith V-R in g B al anc in g SPM - Code : V7xx xxOKx D is asse m bly S t ep 06 •...
  • Page 53 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 54 Schmidt Armaturen AI - FlowTop Lantern B onnet SPM - Code : V7xx xxVLx D is asse m bly S t ep 06 • Remove plug unit from the bonnet CAUT ION ! Do not damage high quality stem surface and plug guide ! R e asse m bly S tep 06...
  • Page 55 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove packing (3.3) and bottom ring (3.2) with Special Tool (Packing driver tool) CAUT ION ! Do not damage packing area and guide ! R e asse m bly S tep 07 Reassembly takes place in reverse order.
  • Page 56 Schmidt Armaturen AI - FlowTop Ins ul ati n g Bon net SPM - Code : V7xx xxVIx D is asse m bly S t ep 06 • Unscrew hexagon nuts (3.16) R e asse m bly S tep 06 •...
  • Page 57 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 07 • Remove head piece CAUT ION ! Ensure it hangs vertically ! • Remove gasket (2.15) CAUT ION ! Remove remains of gasket (2.15) in the body and on the head piece.
  • Page 58 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 08 • Remove plug unit from the bonnet CAUT ION ! Do not damage high quality stem surface and plug guide ! R e asse m bly S tep 08 Reassembly takes place in reverse order.
  • Page 59 Schmidt Armaturen AI - FlowTop D is asse m bly S t ep 09 • Remove insulation pipe (3.23) from the bonnet R e asse m bly S tep 09 Reassembly takes place in reverse order. CAUT ION ! Clean parts and check insulation pipe for damage. •...
  • Page 60 Schmidt Armaturen AI - FlowTop...
  • Page 61 Schmidt Armaturen AI - FlowTop Packing Type Data Field 2 Reassembly 3. Bottom ring 3.3 Packing 3.4 Gland fl ange 3.8 Washers 3.6 Hexagon nuts Tefl on Packing V7xx xxxxA in sequence shown, follow INFORMATION on page 63 ! Tightening moments for gland nuts (3.6) as per Table 05 Page 65 3. Bottom ring 3.3 Packing 3.4 Gland fl ange 3.8 Washers 3.6 Hexagon nuts...
  • Page 62 Schmidt Armaturen AI - FlowTop Packing Type Data Field 2 Reassembly 3. Bottom ring 3.3 Packing 3.4 Gland fl ange 3.11 Belleville spring 3.10 Washers 3.9 Hexagon nuts Tefl on Packing V7xx xxxxQ “TA-Luft” in sequence shown, follow INFORMATION on page 63 ! Tightening moments for gland nuts (3.6) as per INFORMATION Page 63 3. Bottom ring 3.3 Packing 3.4 Gland fl ange...
  • Page 63 Schmidt Armaturen AI - FlowTop INFORMATION Comment "Packing" Always fi t packing / rings (3.3) at a 180 ° off set ! "Belleville Springs" Layer belleville springs (3.11) as shown ! "Spring Loaded Packing" Always tighten the gland nuts (3.9) as far as the mark (channel = max.

  • Page 64: Technical Tables - Tightening Moments

    Schmidt Armaturen AI - FlowTop Table 01 Tightening moments for nuts (1.4) Moisten thread on the stud screws (1.3) sparingly with lubricant (Table 06). Tightening moment in Nm for Nuts (1.4) per nominal width DN Data Field 1 1/2“ 3/4“ 1“ 1 1/2“ “...
  • Page 65 Schmidt Armaturen AI - FlowTop Table 05 Tightening moments for packing nuts (3.6) Moisten thread on the stud screws (3.5) sparingly with lubricant (Table 06). Tightening moment in Nm for “Packing” Nuts (3.6) per nominal width DN Data Field 1 Class 1/2“ 3/4“ 1“...
  • Page 66 Schmidt Armaturen AI - FlowTop...

  • Page 67: Special Tools

    Schmidt Armaturen AI - FlowTop Special Tools Ring - Nuts Recommended tools for disassembling and reassembly tool ! Part no. see spare parts catalogue Seat Change - Tools Recommended tools for disassembling and reassembling the screwed seat ! Part no. see spare parts catalogue Packing Driver - Tool Recommended tools for disassembling the packing ! Part no. see spare parts catalogue Stem Clamping Tools...
  • Page 68 ™ indicates a trade mark of Schmidt Armaturen. Information given in this leaflet is made in god faith and based upon specific testing but does not, however, constitute a guarante. Modifications without notice in line with technical progress. Branch of Flowserve (Austria) GmbH Kassernengasse 6 A-9500 Villach Telephone: +43 (0) 4242 41181-0...

This manual is also suitable for:

Flowtop v738Flowtop v740