Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 63120 pages

Gas ejectors
for two-stage liquid ring vacuum pumps
GOV 3211, GOV 3212
GPV 4011 . . . GPV 6312
VACUUM TECHNOLOGY GPV G 1
133.73101.52.01 E 07/00
Operating pressure: 4 to 80 mbar
Suction volume flow: 10 to 400 m³/h
CONSTRUCTION TYPE
Sterling SIHI gas ejectors are simple and sturdy vacuum
gas ejectors with following particular characteristics:
· Adaptable to different operating conditions by
adequate material selection
· Simple installation into the suction line of liquid ring
vacuum pumps
· Low noise service which is free of maintenance and
deficient in vibration
APPLICATION
Sterling SIHI gas ejectors extend the operating range of
liquid ring vacuum pumps so that lower absolute pressures
become possible (to 8 mbar).
Fields of application are e.g.:
Chemistry and pharmacy for distilling and degassing
Electric industry for impregnation and drying
Plastics industry for degassing etc.
The gases to be handled may be vapour saturated or
aggressive. Sterling SIHI gas ejectors are used wherever
the vacuum attainable by a liquid ring vacuum pump is not
sufficient and where danger of running in cavitation is
immenent for the liquid ring vacuum pump. Even if the
suction side of the ejector is closed, the liquid ring vacuum
pump is protected against cavitation.
NOTE
The characteristics of the suction volume flow of the gas
ejectors depend on essentially on the suction capacity of
the liquid ring vacuum pump and therefore on the vapour
pressure ant temperature of the service liquid used.
To meet with the different conditions, we offer 2 construction
series.
Service liquid: water up to 15°C water up to 30°C
Suction pressure: 8 ... 40 mbar 20 ... 80 mbar
Series: GOV 3211,3212 GOV 3211, 3212
GPV 4011 - 6012 GPV 4311 - 6312
In case of particularly low suction the gas ejector
GPV 5112 is available.
Service liquid: water 15°C
Suction pressure: 4 ... 12 mbar
POLLUTION CONTROLL: To reduce the exhaust blast the
motive gas can be removed from the separator.
The standard combinations described in this catalogue list
are optimal in view of suction volume flow, power
absorption and service charges. Other combinations of gas
ejectors and liquid ring vacuum pumps can be applied.
Details on request.