12 Appendix Abbreviations, Symbols and Code Letters
© 2007 Moog GmbH User Manual RKP-II (CA53461-001; Version 1.0, 10/07) 63
12.3 Abbreviations, Symbols and Code Letters
Abbreviations, Symbols
and Code Letters
Abb. Explanation
β
x
Symbol for filter efficiency
∆p Symbol for pressure change
∆p
N
Symbol for nominal pressure change
ν Symbol for viscosity
A Connection port (consumer load connection)
ANSI American National Standards Institute (http://www.ansi.org)
ATEX Atmosphère explosible (synonymous for the EU Directive pertaining to
explosion protection)
B Connection port (consumer load connection)
DOrifice
D1, D2 Orifice diameter
DIN Deutsches Institut für Normung e. V. (http://www.din.de)
EN Europa-Norm (=European Standard)
EU European Union
HFA Special operating fluid: consists of approx. 95% water
HFC Special operating fluid: water-based polymer solution
HNBR Hydrogenated NitrileButadieneRubber
(sealant material, such as e. g.: o-rings)
ISO International Organization for Standardization (http://www.iso.org)
M Symbol for through-drive torque
M
A
Tightening torque
n Revolution speed
n
max.
Max. revolution speed
NW NominalWidth
Symbol for hydraulic-mechanical efficiency
p Symbol for pressure (Pressure)
p
min.
Symbol for minimum pressure
p
max.
Symbol for maximum pressure
p
N
Symbol for nominal pressure
p
n
Symbol for maximum operating pressure
p Connection port (pressure connection)
Q Symbol for displacement
Q Symbol for a pump's delivery rate
R Revolution
SAE American series of standards (parallel to DIN-EN standards)
WS Wrenchsize
t Symbol for time
T Symbol for temperature
T Connection port (Tank connection)
TÜV Technischer Überwachungsverein
V[cm
3
/R] Displacement
V Symbol for volume (e. g. tank capacity)
V Symbol for delivery volume
V
max.
Symbol for maximum delivery volume
Tab. 17: Abbreviations, Symbols and Code Letters (Part 1 of 2)
η
hm
