Notes for the Reader
Abbreviations and Terms
8
Operating Instructions · VARIVENT
®
Vacuum Valve V
Edition 2016-06-30
HNBR
Material designation
Short designation according to DIN/ISO 1629:
Hydrogenated Acrylonitrile Butadiene Rubber
IP
Protection class
ISO
International standard issued by the International Organization for Standardi-
zation
kg
Unit of measurement of weight [kilogram]
kN
Unit of measurement of force [kilonewton]
L
Unit of measurement of volume [litre]
max.
maximum
mm
Unit of measurement of length [millimetre]
m
Unit of measurement of length [micrometre]
M
metric
Nm
Unit of measurement of work [newton metre]
U
NIT
OF
TORQUE
1 Nm = 0.737 lbft
Pound-Force (lb) + Feet (ft)
PA
Polyamide
PE-LD
Low-density polyethylene
SET-UP
Self-learning installation
During commissioning and maintenance, the SET-UP procedure carries out
all the necessary settings for the generation of messages.
a/f
Indicates the size of spanners
width across flats
T.VIS
Tuchenhagen Valve Information System
V AC
Volt alternating current
V DC
Volt direct current
W
Unit of measurement of power [Watt]
TIG
Welding method
Tungsten inert gas welding
Inch OD
Pipe dimension acc. to British standard
(BS), Outside Diameter
Inch IPS
US pipe dimension
Iron Pipe Size
Abbreviation
Explanation
