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Summary of Contents for Burkert 2920
- Page 1 Type 2920, 2921, 2960, 2961 2/2 way valve, manually operated 2/2-Wege-Ventil, handbetätigt Vanne à 2/2 voies, actionnement manuel Operating Instructions Bedienungsanleitung Manuel d‘utilisation...
- Page 2 We reserve the right to make technical changes without notice. Technische Änderungen vorbehalten. Sous réserve de modifications techniques. © Bürkert Werke GmbH & Co. KG, 2023 Operating Instructions 2311/00_EU-ML_00815454 / Original DE...
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Page 3: Table Of Contents
Type 2920, 2921, 2960, 2961 Table of Contents OPERATING INSTRUCTIONS ..........4 DISASSEMBLY ..............16 Symbols ............... 4 MAINTENANCE ..............16 Definition of terms ............4 Maintenance work ............. 16 INTENDED USE ..............5 Cleaning ..............17 Faults ................. 17 BASIC SAFETY INSTRUCTIONS .......... -
Page 4: Operating Instructions
Definition of terms DANGER Term Definition for these instructions Warning of an immediate danger. Device 2/2 way valve, manually operated type 2920, ▶ Failure to comply will result in death or serious injury. 2921, 2960 and 2961 Ex area Potentially explosive atmosphere... -
Page 5: Intended Use
BASIC SAFETY INSTRUCTIONS These safety instructions do not take into account any unforeseen The 2/2 way valve, manually operated type 2920, 2921, 2960 and circumstances or events that occur during installation, operation 2961 is designed to control the flow of media. The authorised and maintenance. - Page 6 Type 2920, 2921, 2960, 2961 Basic safety instructions ▶ The process must be restarted in a defined or controlled manner Risk of crushing by mechanically powered parts. after an interruption in the power supply or pneumatic supply. The upwards and downwards movement of the device means ▶...
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Page 7: General Notes
A precondition for the warranty is that the device is used as intended in consideration of the specified usage conditions. Information on the Internet Operating instructions and data sheets for Type 2920, 2921, 2960 and 2961 can be found on the Internet at: www.country.burkert.com Fig. -
Page 8: Variants
Type 2920, 2921, 2960, 2961 Product description Variants 5.2.1 Type 2920, 2960 Types 2920, 2921, 2960 and 2961 differ due to the valve body and the control cone. Handwheel with lock (optional) Type Nominal Valve body Properties diameter 2920 10 to 80 Angle seat •... -
Page 9: Function
Type 2920, 2921, 2960, 2961 Product description 5.2.2 Type 2921, 2961 The following tightening torques must not be exceeded for the handwheel sizes: S: 7 Nm, M: 15 Nm, L: 30 Nm. 5.3.1 Position indicator Handwheel with lock (optional) Position indicator Relief bore •... - Page 10 Type 2920, 2921, 2960, 2961 Product description opening) and acts as a fixation point for determining the rotation 5.3.3 Flow characteristic position. Detailed values are listed in the data sheet on the home In the case of valves with locking, the set position can be secured page: country.burkert.com...
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Page 11: Product Identification
Type 2920, 2921, 2960, 2961 Technical data Product identification TECHNICAL DATA 5.4.1 Type label Standards and directives The device complies with the valid EU harmonisation legislation. In addition, the device also complies with the requirements of the laws of the United Kingdom. - Page 12 Type 2920, 2921, 2960, 2961 Technical data 6.2.1 Temperatures Temperature [°C] Operating pressure [bar] 20.3 Ambient temperature –10...+60 °C Medium temperature –10...+230 °C Temperature for valve for a medium temperature of up to Tab. 4: Derating the operating pressure as per DIN EN 12516-1/PN25 seat seal 130 °C: PTFE*...
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Page 13: Installation
Type 2920, 2921, 2960, 2961 Installation INSTALLATION Notes for correct installation → Note the installation position. The device can be installed in any DANGER manner, preferably with the actuator facing upwards. Risk of injury due to high pressure and escaping medium. -
Page 14: Install The Actuator On Devices With A Welded Connection
Type 2920, 2921, 2960, 2961 Installation Install the actuator on devices with Nominal diameter Tightening torque Tolerance a welded connection of valve body DN [Nm] ±3 → Check and replace seal. Make certain that no remnants of seal material get into the pipe system. -
Page 15: Lock Handwheel
Type 2920, 2921, 2960, 2961 Installation Lock handwheel → Loosen the screw on the handwheel and remove the handwheel. It is also an option to lock the handwheel to prevent unintentional → Pull adjusting sleeve upwards and at the same time, screw or unauthorised operation of the valve. -
Page 16: Disassembly
Type 2920, 2921, 2960, 2961 Maintenance MAINTENANCE The lock pin has a bore (Ø 3.8) and can be secured against unauthorised use with a padlock (not included in DANGER scope of delivery). Risk of injury due to high pressure and escaping medium. -
Page 17: Cleaning
Type 2920, 2921, 2960, 2961 Spare parts Cleaning SPARE PARTS Use commercially available cleaning agents for external cleaning. CAUTION NOTE Risk of injury and/or damage due to incorrect parts. Avoid causing damage with cleaning agents. Incorrect accessories and unsuitable spare parts may cause ▶... -
Page 18: Transportation, Storage, Disposal
Type 2920, 2921, 2960, 2961 Transportation, storage, disposal TRANSPORTATION, STORAGE, DISPOSAL CAUTION Risk of injury due to heavy device. During transportation or installation work, a heavy device may fall down and cause injuries. ▶ Heavy equipment must only be transported, assembled and disassembled with the help of a second person. - Page 20 www.burkert.com...
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