Bürkert Type 2012 Operating Instructions
Type 2012
Globe control valve, pneumatically operated
Actuator sizes 40 mm - 125 mm, Nominal diameter DN10 - 65
Kolbengesteuertes Geradsitzventil
Antriebsgrößen 40 mm - 125 mm, Nennweiten DN10 - 65
Vanne à siège droit commandée par piston
Tailles d'actionneur 40 mm - 125 mm, Diamètre nominal DN10 - 65
Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2000 - 2017, Bürkert Werke GmbH & Co. KG
Operating Instructions 1709/21_EU-ML_00804072 / Original DE
Type 2012
Contents
1 OPERATING INSTRUCTIONS ................................................................4
1.1 Symbols ....................................................................................... 4
1.2 Definition of term .......................................................................4
2 AUTHORIZED USE ......................................................................................5
3 BASIC SAFETY INSTRUCTIONS ..........................................................5
4 GENERAL INFORMATION ........................................................................6
4.1 Contact address ........................................................................6
4.2 Warranty ...................................................................................... 6
4.3 Information on the Internet ......................................................6
5 PRODUCT DESCRIPTION ........................................................................7
5.1 General description ..................................................................7
6 STRUCTURE AND FUNCTION...............................................................7
6.1 Structure ...................................................................................... 7
6.2 Function ....................................................................................... 8
7 TECHNICAL DATA ........................................................................................9
7.1 Conformity ................................................................................... 9
7.2 Standards .................................................................................... 9
7.3 Type label ....................................................................................9
7.4 Operating conditions ..............................................................10
7.5 Control functions .....................................................................14
7.6 Mechanical data.......................................................................14
8 INSTALLATION
8.1 Safety instructions ...................................................................15
8.2 Before installation ....................................................................15
8.3 Installation .................................................................................16
8.4 Pneumatic connection ............................................................18
8.5 Removal .....................................................................................18
9 MAINTENANCE, CLEANING ................................................................19
9.1 Safety instructions ...................................................................19
9.2 Maintenance work ...................................................................19
9.3 Replacing the valve seat ........................................................20
10 MALFUNCTIONS ........................................................................................21
11 REPLACEMENT PARTS .......................................................................... 22
11.1 Replacement part sets ...........................................................22
11.2 Overview of spare parts .........................................................22
12 TRANSPORT, STORAGE, DISPOSAL .............................................. 23
............................................................................................ 15
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Type 2012
Operating Instructions
1 OPERATING INSTRUCTIONS
The operating instructions describes the entire life cycle of the device.
Keep these instructions in a location which is easily accessible to
every user, and make these instructions available to every new owner
of the device.
WARNING!
The operating instructions contain important safety information!
Failure to observe these instructions may result in hazardous
situations.
▶ The operating instructions must be read and understood.
1.1 Symbols
DANGER!
Warns of an immediate danger!
▶ Failure to observe the warning may result in a fatal or serious
injury.
WARNING!
Warns of a potentially dangerous situation!
▶ Failure to observe the warning may result in serious injuries or
death.
CAUTION!
Warns of a possible danger!
▶ Failure to observe this warning may result in a moderate or
minor injury.
NOTE!
Warns of damage to property!
▶ Failure to observe the warning may result in damage to the
device or the equipment.
Indicates important additional information, tips and
recommendations.
Refers to information in these operating instructions or in
other documentation.
▶ Designates an instruction to prevent risks.
→ Designates a procedure which you must carry out.
1.2 Definition of term
The term “device” used in these instructions always stands for the
globe control valve Type 2012.
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Type 2012
Authorized Use
2 AUTHORIZED USE
Non-authorized use of the globe control valve Type 2012 may
be a hazard to people, nearby equipment and the environment.
▶ The device is designed for the controlled flow of liquid and gas-
eous media.
▶ In the potentially explosion-risk area the device may be used only
according to the specification on the separate Ex type label. For
use observe the additional information enclosed with the device
together with safety instructions for the explosion-risk area.
▶ Devices without a separate Ex type label may not be used in a
potentially explosive area.
▶ The admissible data, the operating conditions and conditions of
use specified in the contract documents, operating instructions
and on the type label are to be observed during use. These are
described in the chapter entitled “Technical Data”.
▶ The device may be used only in conjunction with third-party devices
and components recommended and authorized by Bürkert.
▶ Correct transportation, correct storage and installation and care-
ful use and maintenance are essential for reliable and faultless
operation.
▶ Use the device only as intended.
3 BASIC SAFETY INSTRUCTIONS
These safety instructions do not make allowance for any
• contingencies and events which may arise during the installation,
operation and maintenance of the devices.
• local safety regulations, whereby the operator is responsible for their
compliance, by the installation personnel too.
Danger – high pressure.
▶ Before dismounting the lines and valves, turn off the pressure and
vent the lines.
Risk of electric shock.
▶ Before reaching into the device, switch off the power supply and
secure to prevent reactivation.
▶ Observe applicable accident prevention and safety regulations
for electrical equipment.
Risk of injury when opening the actuator.
The actuator contains a tensioned spring. If the actuator is opened,
there is a risk of injury from the spring jumping out!
▶ The actuator must not be opened.
Risk of injury from moving parts in the device.
▶ Do not reach into openings.
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5
Type 2012
General Information
Risk of burns.
The surface of the device may become hot during long-term
operation.
▶ Do not touch the device with bare hands.
General hazardous situations.
To prevent injury, ensure:
▶ That the system cannot be activated unintentionally.
▶ Installation and repair work may be carried out by authorized
technicians only and with the appropriate tools.
▶ After an interruption in the power supply or pneumatic supply,
ensure that the process is restarted in a defined or controlled
manner.
▶ The device may be operated only when in perfect condition and
in consideration of the operating instructions.
▶ The general rules of technology apply to application planning and
operation of the device.
To prevent damage to property of the device, ensure:
▶ Supply the media connections only with those media which are
specified as flow media in the chapter entitled “7 Technical Data”.
▶ Do not put any loads on the valve (e.g. by placing objects on it
or standing on it).
▶ Do not make any external modifications to the valves.
▶ Do not paint the body parts or screws.
4 GENERAL INFORMATION
4.1 Contact address
Germany
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: info@de.buerkert.com
International
Contact addresses are found on the final pages of the printed operating manual.
You can also find information on the Internet under:
www.burkert.com
4.2 Warranty
The warranty is only valid if the device is used as authorized in accordance with the specified application conditions.
4.3 Information on the Internet
The operating instructions and data sheets for Type 2012 can be found
on the Internet at: www.burkert.com
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Type 2012
Product Description
5 PRODUCT DESCRIPTION
5.1 General description
The 2/2-way globe control valve Type 2012 is suitable for liquid and
gaseous media. It uses neutral gases or air (control media) to control
the flow of water, alcohol, oil, fuel, hydraulic fluid, saline solution, lye,
organic solvent and steam (flow media).
A particular feature of the globe control valves are screwed in seats
which can be changed if required.
5.1.1 Restrictions
WARNING!
Risk of injury from water hammer!
A water hammer could crack the lines and device. Due to the risk
of water hammer, valves with a flow direction above seat must
not be used for liquid media.
▶ Consider the type of flow direction and the type of medium for
operation of the device.
6 STRUCTURE AND FUNCTION
6.1 Structure
The globe control valve consists of a pneumatically actuated piston
actuator and a 2-way globe control valve body.
The actuator is manufactured from PA or, for special operating conditions, from PPS. The self-adjusting packing gland ensures a high
degree of tightness. The valve body, made of stainless steel, enables
high flow values.
Transparent cap with
position indicator
Pilot air ports
Interface actuator /
body with flats
Port connection
Actuator cover
Actuator body
Globe valve body
Fig. 1: Globe control valve Type 2012, Structure and description
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Type 2012
P
A
P
A
Structure and Function
6.2 Function
Depending on the version, the seat of the valve is closed with or against
the medium flow.
Spring force (CFA) or pneumatic pilot pressure (CFB and CFI) generates the closing force on the swivel plate. The force is transferred
via a spindle which is connected to the actuator piston.
6.2.1 Control functions (CF)
WARNING!
For control function I – Danger if pilot pressure fails.
For control function I control and resetting occur pneumatically. If
the pressure fails, no defined position is reached.
▶ To ensure a controlled restart, first pressurise the device with pilot
pressure, then switch on the medium.
A
(CFA)
B
(CFB)
B
P
Normally closed by spring action
Normally open by spring action
6.2.2 Flow direction below seat
Depending on the version, the valve is closed against the medium
flow with spring force (control function A, CFA) or with pilot pressure
(control function B or I, CFB or CFI).
As the medium pressure is under the swivel plate, this pressure
contributes to the opening of the valve.
WARNING!
Medium may be discharged if minimum pilot pressure is too
low or medium pressure too high.
If the minimum pilot pressure is too low for CFB and CFI or the
permitted medium pressure is exceeded, leaks may occur.
▶ Observe minimum pilot pressure.
▶ Do not exceed medium pressure.
▶ See chapter entitled “7.4.2 Pressure ranges”.
CFA CFB /
CFI
8
I
(CFI)
Actuating function via reciprocal
pressurisation
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Fig. 2: Flow direction below seat (closing against medium)
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