Resistance Of The Sealing Material - GEA VARIVENT Y Originalbetriebsanleitung

Resistance of Sealing Materials
The resistance of sealing materials depends on the type and temperature of the medium conveyed.
The contact time can negatively affect the service life of the seals. The sealing materials comply with the regulations
of FDA 21 CFR 177.2600 or FDA 21 CFR 177.1550.
Medium
Caustics up to 3%
Caustics up to 5%
Caustics up to 5%
Caustics über 5%
Anorganic
Acids up to 3%
Anorganic
Acids up to 5%
Anorganic
Acids up to 5%
Water
Steam
Steam, app. 30 min
Treibstoffe/Kohlen-
wasserstoffe
Product with a fat content
of max. 35%
Product with a fat content
of more than 35%
Oils
2016-02 · Doppelsitz-Wechselventil Y mit Liftantrieb LB/ Mixproof shuttle valve Y with lifting actuator LB
Temperature Sealing material (general operating temperature)
EPDM
-40...+135°C )
-40...275°F
up to 80 °C (176°F) good resistant
up to 40 °C (104°F) good resistant
up to 80 °C (176°F) good resistant
reduced service life
up to 80 °C (176°F) good resistant
up to 80 °C (176°F) reduced service life
up to 100 °C (212°F) not resistant
up to 80 °C (176°F) good resistant
up to 135 °C (275°F) good resistant
up to 150 °C (302°F) good resistant
not resistant
good resistant
not resistant
not resistant
FKM
−10...+200 °C
14...+392°F
reduced service life
reduced service life
not resistant
not resistant
good resistant
good resistant
good resistant
good resistant
reduced service life
reduced service life
good resistant
good resistant
good resistant
good resistant
HNBR
-25...+140 °C
13...+284°F
good resistant
reduced service life
not resistant
not resistant
good resistant
reduced service life
not resistant
good resistant
reduced service life
not resistant
good resistant
good resistant
good resistant
good resistant
35