Burkert 2700 User Manual [en, de, fr]

Operating Instructions

Bedienungsanleitung

Instructions de Service

Type 2700

Piston controlled Y-valve

Actuator sizes 80 mm - 125 mm

Nominal diameter DN 13 - 65

Kolbengesteuertes Schrägsitzventil

Antriebsgrößen 80 mm - 125 mm

Nennweiten DN 13 - 65

Soupape de réglage à tête inclinée

commandée par piston

Tailles de mécanisme 80 mm - 125 mm

Piston section nominale DN 13 - 65

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous resérve de modification techniques.

© 2000 Bürkert Werke GmbH & Co. KG

Operating Instructions 0507/08_EU-ML_00803794

C

ONTENTS

Contents of the overall operating in-

structions for the piston controlled Y-valve

Type 2700

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

Symbols

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

Scope of delivery ..................................................................................................................................................................................................................... 4

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

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

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

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

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

Installation

Pneumatic installation...................................................................................................................................................................................................... 8

................................................................................................................................................................................................................................................ 4

......................................................................................................................................................................................................................................... 8

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MAINTENANCE AND SERVICING.......................................................................................................................................................................... 9

Faults

Replacement of control cone............................................................................................................................................................................. 10

Spare parts sets .................................................................................................................................................................................................................... 11

...................................................................................................................................................................................................................................................... 10

2700 - 1

C

ONTENTS

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2 - 2700

G

ENERAL INFORMATION

GENERAL

INFORMATION

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

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

Scope of delivery ..................................................................................................................................................................................................................... 4

Warranty conditions

............................................................................................................................................................................................................ 4

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G

ENERAL INFORMATION

Symbol

The following symbol are used in these operating instructions:

marks a working step which must be performed

ATTENTION!

NOTE

Safety information

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Please observe the notes int hese operating instructions as well as the service conditions and permissible data which are
specified in the data sheets for the valve Type 2700 with pneumatic drive and the Top
function flawlessly and remain operable for a long time:

• Follow general technical rules when planning the application and operation of the unit!

• Installation and maintenance may only be performed by technical personnel provided with suitable tools!

• Note the accident prevention and safety precautions applicable during operation and maintenance of the unit!

• Always switch off the power supply before working on the system!

• Take suitable measures to prevent inadvertent operation or impermissible influences!

• 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 the Top

indicates information, which if not observed can result in harmfull effects on the health or the serviceability
of the unit.

Indicates important additional information, tips and recommendations.

Control,

in order that the device will

Control

operating instructions.

• We cannot accept any liability if these instructions are ignored or impermissible interventions are made in the unit and the
warranty also becomes invalid on units and accessories!

Scope of delivery

Immediately after receipt of a shipment, make sure that the contents are undamaged and match the scope of delivery stated
on the packing slip.

If there are discrepancies, please contact immediately your Bürkert branch or our customer service:

Warranty conditions

This document contains no warranty promises. We refer in this connection to our General Conditions of Sale and Business.
The condition for the warranty is use of the unit for the intended purpose under the specified under the specified application
conditions.

ATTENTION!

The warranty extends only to absence of faults in the valve Type 2700 with pneumatic drive and the
To p

Control

result of the failure or incorrect functioning of the device.

Bürkert Fluid Control Systems

Service Department

Chr.-Bürkert-Str. 13-17

D-76453 Ingelfingen
Tel.: [phone]
Fax: [phone]

E-Mail: [e-mail]

. No liability will, however, be accepted for subsequent damage of any kind that may arise as a

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T

ECHNICAL DATA

TECHNICAL DATA

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

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

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T

ECHNICAL DATA

Construction of the control valve

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

Control function A
(closed by spring force in rest position)

Control function B
(open in rest position)

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Media

Drive unit material: PA (polyamide)

Housing material: stainless steel 316L

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

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

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 leakage class VI apply.

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OMMISSIONING

COMMISSIONING

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

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Pneumatic installation .......................................................................................................................................................................................................... 8

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C

OMMISSIONING

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 Top

2. Pull off the pneumatic hose between Top
connection of drive unit.

3. Control function A: Pressurize the lowr port of the actuator with
compressed air (6 bar), so that the control cone is lifted from the valve
seat and is not damaged.

Control function B: With control function B, no compressed air must be

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ATTENTION!

applied for this purpose.

4. Remove the actuator in the open valve position by unscrewing the 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.

6. Replace the graphite seal.

To p

Control

actuator

lower
control port

Control

Control

and drive unit at control

For special applications such as for oxygen and analysis, use only the approved lubricants.

.

threaded
nipple

housing

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

ATTENTION!

The valve must be for this in the opened position.

NOTE

When using in an aggressive environment, you are advised to connect pneumatic hoses to all free control
connections and place their other ends in a neutral atmosphere.

Pneumatic installation

The control valve is driven by compressed air via the Top

Control medium: instrument air,

££

£ Remove the protective caps from the ports.

££

➔➔

➔ Apply the supply pressure to port ”1”.

➔➔

The supply pressure necessary for complete opening or closing of the valve
may lie between the minimum values of 3 and 6 bar, depending on the
actuator. The permissible maximum value for the control pressure is 7 bar. The
values for the pressure supply are given under p
control valve.

Control

Class 3 to DIN ISO 8573-1

on the rating plate of each

Pilot

Supply pressure connector

.

(inscription: 1)

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➔➔

➔ Attach the exhaust line or silencer to port ”3”.

➔➔

Outlet air connector
(inscription: 3)

Fluidic connections of the
TopControl Continuous

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AINTENANCE AND SERVICING

MAINTENANCE AND

SERVICING

Faults................................................................................................................................................................................................................................................................................ 10

Replacement of control cone ................................................................................................................................................................................................................. 10

Spare parts sets ................................................................................................................................................................................................................................................... 11

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AINTENANCE AND SERVICING

Faults

ATTENTION!

Repairs to the actuator may only be carried out in the factory. Contact your Bürkert branch or our
Customer Service directly:

Replacement of the control cone

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On the fluidic side is it possible to exchange the control cone if it becomes worn or damaged. For this purpose the drive unit
must be disassembled from the housing.

Disassembly:

Remove the electrical and pneumatic supplies from the Top

Pull off the pneumatic hose between Top
connection of drive unit.

Control function A:

Pressurize the lower control port of the actuator with compressed air (6 bar), so
that the control cone is lifted from the valve seat and is not damaged.

Bürkert Fluid Control Systems

E-Mail: [e-mail]

Control

and drive unit at control

Service Department

Chr.-Bürkert-Str. 13-17

D-76453 Ingelfingen
Tel.: [phone]
Fax: [phone]

Control

.

To p

Control

actuator

lower
control port

threaded nipple

Control function B:

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

Remove the actuator in the open valve position by unscrewing the nipple from the
housing.

Replacing the control cone

Knock out the dowel pin with a suitable driver.

Driver diameter:

up to DN 25 Ø 4 mm
from DN 32 Ø 5 mm

Pull off the control cone with 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
drive unit. To pull off the control cone, apply compressed air (approx. 6 bar) to the lower
control connection of the drive.

Push the new control cone over the end of the spindle.

Align the bores.

ATTENTION!

Do not damage the sealing surface or the control contour!

housing

Dowel pin

Control cone

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AINTENANCE AND SERVICING

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

Carefully knock the dowel pin into the bore with a hammer.

Bring the dowel pin into a central position relative to the spindle axis (knock in as far as the end of the recess).

Assembly

Assembly is carried out in the reverse sequence to disassembly.

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.

ATTENTION!

ATTENTION!

The valve must be for this in the opened position.

For special applications such as for oxygen and analysis, use only the approved lubricants.

Spare parts sets

Control cone set

DN Steel/Steel PTFE/steel

Order no. Order no.

13 149 790 149 927
20 149 921 149 928
25 149 922 149 929
32 149 923 149 930
40 149 924 149 931
50 149 925 149 932

65 149 926 149 933
Contains:
Control cone, dowel pin, graphite seal,
lubricant

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NOTE

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

2700 - 11