GEA VARIVENT Series, Инструкция по эксплуатации

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Technical data: Compressed air supply
Designation Description
Product pressure
5 bar (72.5 psi) standard
max. 10 bar (116 psi)
Control air pressure 6 bar, max. 8 bar
Control air acc. to ISO 8573-1
- Solid particle content:
Quality class 6
Particle size max. 5 µm
Particle density max. 5 mg/m
3
- Water content:
Quality class 4
max. dew point +3 °C
If the unit is used at higher altitudes or
at low ambient temperatures, the dew
point must be adapted accordingly.
- Oil content:
Quality class 3, ideally oil-free, max.
1 mg oil for 1 m
3
air
5.3 Resistance of the sealing materials
The resistance of sealing materials depends on the type and temperature of the
medium conveyed. The exposure time can adversely 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.
Resistance:
• + = good resistance
• o = reduced resistance
• - = no resistance
* Depending on the installation conditions
Seal resistance for EPDM, FKM, HNBR, PTFE
Medium Temperature Sealing material (general operating temperature*)
EPDM
-40...+135 °C *
(-40...275 °F) FKM
-10...+200 °C *
(+14...+392 °F) HNBR
-25...+140 °C *
(-13...+284 °F) PTFE
-200...+260 °C
(-328...+500°F)
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 +
Technical data
Resistance of the sealing materials
430BAL008583EN_1
18 12.08.2019