Cast Iron frame IP 55 drive motors are specified with class ‘F’
insulation, yet with temperature rise conservatively limited to
80°C even when fully loaded. Low applied load factors also combine
to ensure a high degree of reliability in operation.
Reliability is at the heart of every SRE package in the form of
a Dresser Roots URAI exhauster. These units are precision machined
on the latest CNC equipment, which ensures close tolerances between
the impellers, casing and headplates. This results in reduced back
slippage of air with improved efficiency and reliability. The exclusive
‘Figure 8’ gearbox design in the blowers improves lubricant distribution
and lengthens bearing and gear life. All bearings are sized for
extended life. Vee-belt loads are carried by cylindrical roller
The powder coated steel acoustic enclosure is an integral part
of each SRE package. It is highly durable, attractively styled and
provides easy access for periodic maintenance through the hinged
All SRE series packages are fitted with vacuum relief safety valves
or vacuum switches. The internal system pipework is complete from
suction inlet to the discharge connection.
Selecting the exhauster you need is very easy!
The SRE range incorporates a high level of pre-engineering. This
results in a standardised packaged exhauster series with pre-selected
capacities at inlet vacuums to 500 millibar. Primary and secondary
discharge silencers are installed beneath the base plate.