GEA VARIVENT C User Manual

Due to the versatile conditions of use (e.g. usage duration, switching frequency,
type and temperature of product and cleaning agents as well as usage
environment), GEA Tuchenhagen recommends that the user carries out
resistance tests.
Resistance:
•
+ = good resistance
•
o = reduced resistance
•
– = no resistance
Table of sealing resistance / permitted operating temperature
Medium
Maximum
operating
temperatures
Sealing material
EPDM FKM HNBR
Alkalis up to 3% up to 80 °C (176°F) + o +
Alkalis up to 5% up to 40 °C (104°F) + o o
Alkalis up to 5% up to 80 °C (176°F) + – –
Alkalis more
than 5%
o – –
Inorganic acids
up to 3%
up to 80 °C (176°F) + + +
Inorganic acids
up to 5%
up to 80 °C (176°F) o + o
Inorganic acids
up to 5%
up to 100 °C
(212°F)
– + –
Water
up to 100 °C
(176°F)
+ + +
Steam
up to 135 °C
(275°F)
+ o o
Steam, approx.
30 min
up to 150 °C
(302°F)
+ o –
Fuels/hydrocarbons – + +
Product with a fat content of max.
35%
+ + +
Product with a fat content of more
than 35%
– + +
Oils – + +
Technical data
Resistance and permitted operating temperature of the sealing materials
430BAL008331EN_4
24 18.02.2022

GEA VARIVENT C Specifications

General

Brand	GEA
Model	VARIVENT C
Category	Control Unit
Language	English