Relief valves
![](/fileadmin/ecollect/04_Zubehoer/01_Bilder_Zubehoergruppen/Zub_WAG_Begrenzungsventile_560_20130625.png)
Relief valves for connection on intake or discharge side. Prevents the side channel blower from being operated in impermissible areas of the characteristic curve and thus protects the motor and the system.
Vacuum relief valve
![Vacuum relief valve](/fileadmin/ecollect/04_Zubehoer/SD-Zubehoer/02_Technische_Zeichnungen/Zub_SD_Druckbegrenzungsventil_Mass_560_20130507.png)
SD 8
Nur gültig für folgende Varianten:
- SD 8 Three-phase current 50 Hz
- SD 8 Three-phase current 60 Hz IE3
- SD 8 Three-phase current 60 Hz
l
d
d1
d2
d3
d4
h
h1
article number
205 mm
65 mm
110 mm
130 mm
145 mm
9 mm
178 mm
12 mm
9000442
Pressure relief valve
![Pressure relief valve](/fileadmin/ecollect/04_Zubehoer/SD-Zubehoer/02_Technische_Zeichnungen/Zub_SD_Druckbegrenzungsventil_Mass_560_20130507.png)
SD 8
Nur gültig für folgende Varianten:
- SD 8 Three-phase current 50 Hz
- SD 8 Three-phase current 60 Hz IE3
- SD 8 Three-phase current 60 Hz
l
d
d1
d2
d3
d4
h
h1
article number
205 mm
65 mm
110 mm
130 mm
145 mm
9 mm
178 mm
12 mm
9000443