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Vexve DN 15, Installation, Operation, Adjustment And Maintenance Manual, Page: 15 / 24

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Vexve DN 15 Installation, Operation, Adjustment And Maintenance Manual Download Page 15

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15

www.vexve.com

www.vexve.com

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3

2

5

4

 · Remove the handle or control knop by pulling 

hard on it directly upwards

 · Remove the retaining ring
 · Remove the stem sealing bush
 · Remove the damaged O-ring
 · Put the new O-ring in place by pressing the 

upper surface evenly downwards

 · Put the new stem sealing bush in place by 

pressing the upper surface evenly downwards

 · Put the new retaining ring in place
 · Put the removed handle or control knop back 

in place

Component

Steel

Stainless steel

1

Retaining ring

299415

289115

2

Stem sealing bush

901088

901088

3

O-ring

901105

901101

4

Handle

901115

901115

5

Precision control knop

901130T

901130H

5.1 Replacing the O-ring in the valves of X series

Summary of Contents for DN 15

Page 1: ...Vexve X shut off and balancingvalves steel and stainless steel installation operation adjustment and maintenance manual ...

Page 2: ...pipe 11 4 3 Commissioning and pressure testing 12 4 4 Determining the pre set value for the balancing valve 12 4 5 Setting the pre set values 13 4 6 Measuring the valve s flow rate 13 5 Maintenance 14 5 1 Replacing the O ring in the valves of X series 15 6 Appendices 16 6 1 Structure of balancing valves DN 50 16 6 2 Structure of ball valves DN 50 17 6 3 Pressure loss diagrams for balancing valves ...

Page 3: ... of the product Failure to follow these instructions may void the warranty Defective products covered by the warranty should be returned to the manufacturer for investigation Vexve Oy may grant a refund only when the product has been found to be defective The warranty conditions are set out in Vexve Oy s General Conditions of Sale which are available from the manufacturer Warnings and symbols Fail...

Page 4: ...such as process waters ethanol methanol water glycol mixtures or freezium The valves in the X series can be used within the limits shown by the pressure temperature graph below Graph 1 Pressure temperature graph Note If you intend to use the valve with other media or in other applications contact Vexve to verify that the value is compatible with the planned use The structure of the valves in the X...

Page 5: ...ve 2 Pressure class 3 Material of the valve s body 4 Operating temperature range 5 Product number 6 LVI number only in Finland 7 CE marking 8 Flow direction balancing valves 9 Product brand 10 Date of manufacture 11 Manufacturer s website address 0219 www vexve com 1 3 4 6 7 9 11 2 5 10 8 DN 32 PN 16 35 mm Material Tmin Tmax Product no LVI no 1 0345 30 120 ºC 142032X 4011627 Direction of flow ...

Page 6: ...impuri ties The valve is delivered from the factory in the open position The valve must remain in the open position during storage The maximum storage period is two years Package Vexve s products come in packages designed for transportation The packages are made from environmentally friendly material that is easy to sort and recycle We recommend recycling the packaging mate rial The packaging mate...

Page 7: ...ive covers for the flow openings must only be removed immediately before installation The valve should be protected from sand dust and other impurities Take great care when you test the valve before fitting it to the pipe network The valve must not be lifted by the handle or precision control knop Dropping the valve or lifting it incorrectly may lead to severe personal injury or product damage Not...

Page 8: ...nd check that there are no sharp burrs on it 4 Check the coupling heads Check the coupling head of the pipe it must be circular and undamaged 5 Marking the installation depth Mark the correct installation depth on the pipe using the Vexve installation depth gauge 6 Checking the coupling heads of the valve Visually inspect the valve s coupling head for any damage and ensure that the O ring is in pl...

Page 9: ...g matches up 9 Pressing the connection Press the connection using a standard compli ant M or V profile press tool intended for press ing thin walled steel pipes 8 Check before pressing Before pressing check that the O ring groove on the valve meets the groove on the tool 10 Removing the collar Remove the cracked collar by hand if it does not detach of its own accord ...

Page 10: ...es In the Figure 2 D the diameter of the pipeline 5 D 2 D Flow direction Flow direction Figure 2 Minimum installation distances 10 D Note The recommended installation position for the valve is with the shaft in the vertical or horizontal position ...

Page 11: ...ter in the section beyond the valve Figure 4 Cap plug There must be at least 200 mm of pipe between the valve and the cap plug Figure 3 The valve must not be used as a termi nal for the pipeline 4 2 Installation on the end of the pipe Note If the valve and the cap plug are installed as the terminal for a pipeline the valve must be completely in the open position A closed area must not be allowed t...

Page 12: ...s diagrams pages 18 20 if the valve s flow rate and pressure loss are known 4 3 Commissioning and pressure testing 4 4 Determining the pre set value for the balancing valve Table 1 Kv values for Vexve X balancing valves Pre set value DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 1 0 0 04 0 19 0 22 0 48 0 71 1 5 0 04 0 07 0 35 0 41 0 6 1 29 2 0 0 06 0 12 0 56 0 61 0 82 2 09 2 5 0 11 0 20 0 77 0 85 1 29 3 10 ...

Page 13: ...asuring the valve s flow rate The valve s flow rate can be measured using a separate flowmeter These devices measure the pressure on both sides of the valve and calculate the pressure loss caused by the valve on the basis of the measurements The measur ing device determines the flow rate based on the pressure loss and the Kv value corresponding to the valve s pre set value Contact Vexve Oy for add...

Page 14: ...gh Protect yourself from burns We recommend regularly checking the following Check that the valve s surface is not damaged and that there are no discernible leaks from the shaft structure Repair any damage carefully In the event that the valve is used rarely ten times per year or fewer we recommend checking the follow ing to ensure the long term reliability of the valve Check that there are no dis...

Page 15: ...urface evenly downwards Put the new stem sealing bush in place by pressing the upper surface evenly downwards Put the new retaining ring in place Put the removed handle or control knop back in place Component Steel Stainless steel 1 Retaining ring 299415 289115 2 Stem sealing bush 901088 901088 3 O ring 901105 901101 4 Handle 901115 901115 5 Precision control knop 901130T 901130H 5 1 Replacing the...

Page 16: ...po nent number Name Units 1 Body 1 2 Extension pipe pressed 2 3 Ball seal 2 4 Support plate 2 5 Spring plate 2 6 Stem bush 1 7 Stem 1 8 Sealing cuff 1 9 Retaining ring 1 10 Sliding plate 1 11 O ring 2 12 Ball 1 13 Flow pipe 1 14 Precision control knop 1 15 LBP O ring 2 16 Measuring block blue 1 17 Measuring block red 1 ...

Page 17: ...ody 1 2 Extension pipe pressed 2 3 Ball 1 4 Ball seal 2 5 Support plate 2 6 Spring plate 2 7 Stem bush 1 8 Stem 1 9 Stem sealing bush 1 10 Retaining ring 1 11 Sliding plate 1 12 O ring 2 13 O ring 1 14 Handle 1 15 Handle cover 1 16 LBP O ring 2 15 14 13 9 12 16 1 4 5 6 10 11 8 3 2 2 7 ...

Page 18: ...0 01 0 1 1 Δp kPa Q m h Set value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 2 0 1 1 10 100 0 01 0 1 1 10 Δp kPa Q m h Set value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 1 Set value 2 DN 15 DN 20 ...

Page 19: ...value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 2 Set value 1 0 1 1 10 100 0 1 1 10 Δp kPa Q m h Set value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 2 Set value 1 DN 25 DN 32 ...

Page 20: ...value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 2 Set value 1 DN 40 0 1 1 10 100 0 1 1 10 Δp kPa Q m h Set value 9 Set value 8 Set value 7 Set value 6 Set value 5 Set value 4 Set value 3 Set value 2 Set value 1 DN 50 ...

Page 21: ...21 www vexve com ...

Page 22: ...22 www vexve com ...

Page 23: ...23 www vexve com ...

Page 24: ...Vexve Oy Pajakatu 11 38200 Sastamala Finland Tel 358 10 734 0800 Riihenkalliontie 10 23800 Laitila Finland vexve customer vexve com www vexve com 01 2020 All rights reserved ...

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