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Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS
35
Fig. 32
Typical example of self-flushed SINGLE
mechanical seal - API Plan 01, 02 or 11
Fig. 33
Typical example of DOUBLE BACK-TO-BACK mechanical seal
with liquid from an outside source
– API Plan 54
Handled liquid
Buffer liquid outside the
mechanical seals
Fig. 34
Typical example of DOUBLE mechanical seals in SERIES with
buffer liquid from an outside source
– API Plan 52
Fig. 35
Example of SINGLE mechanical seal with QUENCH
API Plan 01/61
(NOTE.: Continuous flushing is not possible)
Fig. 36
Example of SINGLE mechanical seal with QUENCH
API Plan 01/62
Drenaggio
Sfiato
Bussola di sicurezza senza contatto
Pressione max. superiore di 0,3 bar
alla pressione atmosferica
Tenuta a labbro strisciante
Pump working pressure
Max pressure 0,3 bar over the
atmospheric pressure
Pressure at least 0,5 bar over the
working pressure
Pump working pressure
Pump working pressure
Max pressure 0,3 bar over
atmospheric pressure
Non-contact safety bushing
Contact auxiliary seal
Vent
Drain