ROTORCOMP VERDICHTER
Operating Manual - NK 100
3.12
[en] 09/2008
3.10.3 Minimum pressure valve
Figure 3-13
1. Non-return valve plate
2. Non-return valve spring
3. O-ring
4. Pressure holding valve piston
5. Pressure holding valve spring
6. Pressure holding valve housing
A
Minimum pressure valve closed
B
Minimum pressure valve opened
The minimum pressure valve is located on the out-
let of the compressor before the air recooler and
serves as:
a) Pressure holding valve
It prevents the pressure drop, in case of a lack of
counter-pressure, under a minimum pressure of
approx. 5.5 bar. This pressure is necessary to
ensure the oil supply of the compressor. At the
same time this is the condition for good oil separa-
tion.
b) Non-return valve
It prevents compressed air from flowing back out
of the system or the compressed-air reservoir into
the screw compressor system. As a result, the
system can be completely discharged when the
separator reservoir is switched off.
This valve operates automatically.
A
B
1
2
3
4
5
6
7
Содержание NK 100
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