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Type 2920, 2921, 2960, 2961
General notes
4
GENERAL NOTES
4.1
Contact addresses
Germany
Bürkert Fluid Control Systems
Sales Centre
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@burkert.com
International
The contact addresses can be found on the back pages of the
printed operating instructions.
They are also available online at:
4.2
Warranty
A precondition for the warranty is that the device is used as intended
in consideration of the specified usage conditions.
4.3
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
country.burkert.com
5
PRODUCT DESCRIPTION
5.1
Structure and description
The device is a manually operated seat valve, consisting of a
manual actuator and a 2/2 way valve body.
The manual actuator is available in the following sizes:
Nominal
Hand-
Designation Handwheel
diameter
wheel
DN
size
15 to 25
S
Small
32 to 40
S/M
Small/
Medium
50
M
Medium
65 to 100
L
Large
Tab. 1:
Handwheel sizes
Fig. 1:
Handwheel diameter
english
Slope per
diameter
rotation
[mm]
[mm]
45
1.25
45/110
1.25 / 1.75
110
1.75
160
2.0
7
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