Burkert 2712 series User manual

Operating Instructions

Bedienungsanleitung

Manuel d‘utilisation

Type 2712

Piston controlled flat-seat valve

Actuator sizes 80 mm - 125 mm, Nominal diameters DN 10 - 65

Kolbengesteuertes Geradsitzventil

Antriebsgrößen 80 mm - 125 mm, Nennweiten DN 10 - 65

Soupape de réglage à tête droite commandée par piston

Tailles de mécanisme 80 mm - 125 mm, Diamètre nominal DN 10 - 65

We reserve the right to make technical changes without notice.

Technische Änderungen vorbehalten.

Sous réserve de modifications techniques.

Operating Instructions 1706/_EU-EN_008 / Original DE

2712 - 1

CONTENTS

english

Contents of the overall operating instructions

for the piston controlled flat-seat valve

Type 2712

GENERAL INFORMATION............................................................................................................................................................................................................. 3

Symbols..........................................................................................................................................................................................................................................................4

Safety information........................................................................................................................................................................................................................... 4

Contact addresses ....................................................................................................................... ................................................................................................ 4

Warranty conditions......................................................................................................................................................................................................................4

TECHNICAL DATA.....................................................................................................................................................................................................................................5

Construction of the control valve.............................................................................................................................................................................6

Media...................................................................................................................................................................................................................................................................6

COMMISSIONING..........................................................................................................................................................................................................................................7

Installation of the valve.............................................................................................................................................................................................................8

Pneumatic installation...............................................................................................................................................................................................................9

MAINTENANCE AND SERVICING............................................................................................................................................................................... 11

Malfunctions......................................................................................................................................................................................................................................... 12

Replacement of control cone......................................................................................................................................................................................12

Replacement of the valve seat...................................................................................................................................................................................14

Spare pare sets................................................................................................................................................................................................................................15

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CONTENTS

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GENERALINFORMATION

2712 - 3

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GENERAL

INFORMATION

Contact addresses ........................................................................................................................ ..........................................................................................4

GENERALINFORMATION

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Symbols

ATTENTION!marks notes on whose non-observance your health or the functioning of the device will

be endangered.

Please observe the notes in these operating instructions together with the conditions of use and permitted

data that are specified in the data sheets of valve, in order that the device will function perfectly and

remain operable for a long time:

•Keep to standard engineering rules in planning the use of and operating the device!

•Installation and maintenance work are only allowed by specialist personnel using suitable tools!

•Observe the current regulations on accident prevention and safety during operation and maintenance of

the device!

•Switch off the supply voltage in all cases before intervening in the system!

•Note that in systems under pressure, piping and valves may not be loosened!

•Take suitable precautions to prevent inadvertent operation or damage by unauthorized action!

•Ensure a defined and controlled re-start of the process following an interruption of the electrical or

pneumatic supply!

•Take the safety notes from the electrical part of theTop

Control

operating instructions

•On non-observance of these notes and unauthorized interference with the device, we will refuse all

liability and the warranty on device and accessories will become void!

Safety notes

NOTE marksimportant additional information,tipsand recommendations.

The following symbols are used in these operating instructions:

marks a work step that you must carry out.

GENERAL NOTES

Warranty conditions

A prerequisite for validity of the warranty is use of the device as intended with observance of the specified

conditions of use.

ATTENTION!The warranty covers only faultless condition of valveType 2712 with pneumatic drive and

theTop

Control.

.No liability will be accepted for consequent damage of any kind that may

arise from failure or malfunctioning of the device.

Contact addresses

Bürkert Fluid Control Systems

Sales Center

Christian-Bürkert-Str. 13-17

D-74653 Ingelfingen

Tel. + 49 (0) 7940 - 10 91 111

Fax + 49 (0) 7940 - 10 91 448

E-mail: [email protected]

International

Contact addresses can be found on the final pages of these printed operating instructions.

And also on the internet at: www.burkert.com

Germany

TECHNICAL DATA

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TECHNICAL DATA

Construction of the control valve ....................................................................................................................................................................... 6

Media ............................................................................................................................................................................................................................................................. 6

TECHNICAL DATA

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Liquid and gaseous media that do not attack the housing and seal materials.

Control medium: instrument air, class 3 according to DIN ISO 8573-1

2/2-way piston controlled valve with control cone and flat-seat housing

Control function A

(closed by spring force in rest position)

Control function B

(open in rest position)

Drive unit material: PA (polyamide)

Housing material: stainless steel 316L

Seal materials: steel/steel (1.4571) or PTFE/steel

Media

NOTE The approved operating pressures and media temperatures are to be taken from the data

sheet or rating plate. With regard to the permissible seat leakage, the values given in DIN

EN 1349 are complied with, whereby for the steel/steel seal, leakage class IV and for the

PTFE/steel seal leakage class VI apply.

Construction of the control valve

Control medium Quality classes according to DIN ISO 8573-1

Dust content Class 5: Max. particle size 40 µm; max. particle density 10 mg/m3

Water content Class 3: Max. pressure dew point -20 °C or min. 10 degrees below the

lowest operating temperature

Oil content Class 5: Max. 25 mg/m3 in conjunction with Bürkert positioners

Class 3: Max. 1 mg/m3 in conjunction with SIDE Control Type 8635

Note: Higher demands placed on the positioner must be observed!

COMMISSIONING

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COMMISSIONING

Pneumatic installation ............................................................................................................................................................................................................. 9

COMMISSIONING

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Installation of the valve

May be installed in any position, but preferably with the drive unit above.

Observe the flow direction (general rule for control valves: flow input under seat!)

Clean the piping of contamination!

Before connecting the valve housing, take care that piping is aligned!

In the case of weld-on housings, be sure to remove the drive unit before welding.

Procedure:

1. Remove the electrical and pneumatic supplies from the

TopControl.

2. Pull off the pneumatic hose between TopControl and drive unit at

control connection of drive unit.

3. Control function A:

Pressurize the lower control port of the actuator with

compressed air (6 bar), so that the valve disk is lifted

from the valve seat and is not damaged.

Control functions B:

No compressed air must be applied.

4. Remove the actuator in the open valve position by

unscrewing the threaded nipple from the housing.

5. Before reinstalling the actuator (in the open valve

position), grease the nipple thread with stainless steel

lubricant, e.g. Klüberpaste UH1 96-402 from Messrs. Klüber.

and replace the graphite seal.

threaded

nipple

Top

Control

actuator

housing

lower

control port

ATTENTION! For special applications such as for oxygen and analysis, use only the approved

lubricants.

6. After tightening the threaded nipple, align the control ports by turning the actuator.

ATTENTION! During this operation, the valve must be in the open position.

NOTE For applications in aggressive media, we recommend attaching all free pneumatic

connections to a pneumatic hose whose other end lies in a neutral atmosphere.

COMMISSIONING

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The control valve is driven by compressed air via the TopControl .

➔Remove the protective caps from the ports.

➔Connect the air supply to port 1

The supply pressure required for complete opening or closing of the valve may lie between the minimum

values of 3 to 6 bar, depending on the drive unit. The permissible maximum value for the control pressure

is 7 bar. The value for the supply pressure is given as Ppilot on the rating plate of the respective valve.

➔Mount the exhaust air pipe or noise reducer on port 3

Control medium: instrument air, class 3 according to DIN ISO 8573-1

Pneumatic installation

Fluidic connections of the Top

Control

Continuous

Outlet air

connector

(inscription: 3)

Supply pressure connector

(inscription: 1)

COMMISSIONING

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MAINTENANCE AND SERVICING OF THE VALVE

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MAINTENANCE

AND

SERVICING

Malfunctions ................................................................................................................................................................................................................................... 12

Replacement of valve seat ......................................................................................................................................................................................... 14

Spare parts sets ........................................................................................................................................................................................................................ 15

MAINTENANCEAND SERVICINGOF THEVALVE

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Possible malfunctions concerning the actuator are listed in the operatinginstructions for the Top

Control

Malfunctions

ATTENTION!Repairs to the actuator may only be carried out in the factory. Contact your Bürkert

branch or our Customer Service directly:

Bürkert Fluid Control Systems

Service Department

Chr.-Bürkert-Str. 13-17

D-74653 Ingelfingen

Tel.: (07940) 10 91-111

Fax: (07940) 10 91-448

E-Mail: info@de.buerkert.com

Replacing the control cone

Replacing the control cone:

Knock out the dowel pin with a suitable driver.

Driver diameter:

up to DN 25 φ 4 mm

from DN 32 to DN 65 φ 5 mm

Pull off the control cone with the aid of two metal strips of equal

height that are clamped to the left and right of the spindle between

the control cone and the threaded nipple of the actuator. To pull off

the control cone, apply compressed air (approx. 6 bar) to the lower

control connection of the actuator.

Place the new control cone onto the end of the spindle.

Align the bores to each other.

On the fluidic side, the control cone can be replaced in case of wear or damage. For this purpose, the

actuator must be disassembled from the housing.

ATTENTION!Do not damage the sealing surface or the control

contour!

dowel pincontrol cone

Disassembly

Remove the electrical and pneumatic supplies from the TopControl.

Pull off the pneumatic hose between TopControl and actuator at the

control port of the latter.

ControlfunctionA:

Pressurize the lower control port of the actuator with compressed

air (6 bar), so that the control cone is liftet from the valve seat and

is not damaged.

ControlfunctionB:

With control function B, no compressed air must be applied for this

purpose.

Remove the actuator in the open valve position by unscrewing the

threaded nipple from the housing.

threaded nipple

MAINTENANCE AND SERVICING OF THE VALVE

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Support the control cone at ists cylindrical part with the aid of a V-block or the like.

Place the dowel pin in postion and carefully knock in with a hammer.

Bring the dowel pin into a central position relative to the spindle axis (knock it in up to the end of the

recess).

Before reinstalling the actuator, grease the nipple thread with stainless steel lubricant, e.g.

Klüberpaste UH1 96-402 from Messrs. Klüber and replace the graphite seal. *

Assembly

ATTENTION! For special applications such as for oxygen and analysis, use only the approved

lubricants.

After tightening the threaded nipple, align the control ports by turning the actuator.*

ATTENTION! * During this operation, the valve must be in the open position.

MAINTENANCEAND SERVICINGOF THE VALVE

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Replacement of valve seat

The drive unit must be completely removed to replace the valve seat.

Disassembly

Remove the electricaland pneumatic supplies fromtheTop

Control.

Pull off the pneumatic hose betweenTop

Control

and drive unit at control connection of drive unit.

In the case of control function A, pressurize the lower control connection of the drive unit with

compressed air (5 to 7 bar) so that the control cone lifts from the valve seat and is not damaged.With

control function B, no compressed air must be applied for this purpose.

Remove the drive unit in the open valve position by unscrewing the threaded nipple of the housing.

Before reinstalling the drive (in open valve position), grease the nipple thread with stainless steel

lubricant, e.g. silicone grease CKS 1110 from OKS, Munich and replace the graphite seal.

Assembly tool

Tool insert

(depending on nomi-

nal diameter of seat)

Valve seat

Replacement of valve seat

Unscrew the old housing seat using the assembly tool and a

spanner.

Clean thread and sealing surface in the housing with

compressedair.

Select a tool insert and screw it into the assembly tool.

Push the new seat onto the assembly tool, grease the thread

with stainless steel lubricant, e.g. Klüberpaste UH1 96-402

from Messrs.Klüber.

Place the attached seat by hand into the housing thread and

screw it in.

Tighten the seat with a torque wrench to the torque specified.

ATTENTION!For special applications such as for oxygen and

analysis, use only the approved lubricants.

NOTE On installing a valve seat with a different nominal

diameter, the order number for the valve changes!

Assembly

Assembly is carried out in the reverse sequence to

disassembly.

Housing DN Order no.

15 652 604

20 652 605

25 652 606

32 652 607

40 652 608

50 652 609

Seat assembly tools

MAINTENANCE AND SERVICING OF THE VALVE

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Tightening torques for seat assembly

Spare parts sets

NOTE Before removal or opening of the device, be sure to interrupt the supply of medium and

relieve the pressure in the piping.

NOTE Spare parts sets for special versions are available on request (e.g. oxygen or analysis

versions, etc.).

DN DN Steel/steel PTFE/Steel

Pipe Seat Order no. Order no.

10, 15 4 149 934 -

10, 15 6 152 696 -

10, 15 8 149 935149 962

10, 15 10 149 912149 963

20 10 149 914149 965

15 15 149 915149 943

20 15 149 916 149 944

25 15 149 917149 945

20 20 149 918149 946

25 20 149 951149 947

32 20 149 952149 948

25 25 149 953149 949

32 25 149 954 149 950

40 25 149 955150 001

32 32 149 956150 002

40 32 149 957150 003

50 32 149 958150 004

40 40 149 959150 006

50 40 149 960150 007

50 50 149 961150 008

65 40 155 624155 636

65 50 155 626155 638

65 65 155 629155 641

Control cone set

Contains:

Control cone, dowel pin, graphite seal

Connection Torque

Tolerance

Seat Housing Uncoated

seat

Coated

seat

DN 4-15 DN 15 25 20 + 3

DN 20 DN 20 35 28 + 3

DN 25 DN 25 50 40 + 5

DN 32 DN 32 80 65 + 5

DN 40 DN 40 100 85 + 8

DN 50 DN 50 120 120 + 8

DN 65 DN 65 150 150 + 10

DN 80 DN 80 180 180 + 10

DN 100 DN 100 220 220 + 10

Valve seat set

DN DN

Housing Seat Order no.

10,15 4 262 143

10,15 6 262 146

10,15 8 262 147

10,15 10 262 149

20 10 262 151

15 15 262 152

20 15 262 153

25 15 262 155

20 20 262 157

25 20 262 160

32 20 262 163

25 25 262 170

32 25 262 171

40 25 262 173

32 32 262 174

40 32 262 175

50 32 262 176

40 40 262 177

50 40 262 178

50 50 262 179

65 40 262 202

65 50 262 203

65 65 262 204

MAINTENANCE AND SERVICING OF THE VALVE

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Flat-seat valve

Control fittings set

Control cone set

2712 -19

INHALT

deutsch

Inhaltsverzeichnis der

Gesamtbedienungsanleitung

des kolbengesteuerten

Geradsitzregelventils Typ 2712

ALLGEMEINE HINWEISE....................................................................................................................................................................................................21

Darstellungsmittel................................................................................................................................................................................................................ 22

Sicherheitshinweise..........................................................................................................................................................................................................22

Kontaktadressen ................................................................................................................ .................................................................................................22

Gewährleistung

...............................................................................................................................

................................................................22

TECHNISCHE DATEN..............................................................................................................................................................................................................23

Aufbau des Regelventils.............................................................................................................................................................................................24

Medien...................................................................................................................................................................................................................................................24

INBETRIEBNAHME....................................................................................................................................................................................................................... 25

Einbau.................................................................................................................................................................................................................................................... 26

Pneumatische Installation..........................................................................................................................................................................................27

INSTANDHALTUNG UND WARTUNG...........................................................................................................................................................29

Störungen ........................................................................................................................................................................................................................................30

Austausch des Regelkegels..................................................................................................................................................................................30

Austausch des Ventilsitzes.....................................................................................................................................................................................32

Ersatzteilsätzefür Standardgeräte..............................................................................................................................................................33