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COMPRESSOR PROTECTIVE DEVICES
The function of a Helical Oil Separator is to remove oil from the
discharge gas and return it to the Compressor either directly or
through an Oil Management System.
Helical Oil Separators are typically used on multi-compressor refrigeration
racks or air conditioning units. They are primarily intended for use with scroll
and reciprocating type compressors, and not intended to be used with screw
or rotary vane compressors. Helical Oil Separators are intended for Low
Pressure Oil Management Systems. Helical Oil Separators are suitable for
use with HCFC and HFC refrigerants, and their associated oils, as well as
other industrial fluids non-corrosive to steel, copper and brass.
*Patented Henry Technologies’ Design
ODS refrigerant connections
SAE flare or ODS oil connection
High oil removal efficiency - up to 99%
Low pressure drop
No moving parts within oil separation zone
Serviceable models available, S-52** series
1/8 NPT oil drain
Magnet on oil float to collect debris
Replacement parts available
Standard 3/8” flare oil return connection; 3/8” ODS oil return connection
available by ordering an “X” suffix (i.e. S-5292X).
Materials of Construction
The main components; shell, end caps and connections are made from
carbon steel. The float assemblies are made from stainless steel, brass and
Maximum working pressure = 450 PSI (31 Bar)
Allowable operating temperature = +15°F to +300°F (-10°C to +149°C)
Henry Technologies’ Helical Oil Separators are UL and C-UL Listed by
Underwriters Laboratories, Inc. Additionally, Helical Oil Separators are
designed and registered for use in Canada. Please contact Technical
Support at 1-800-627-5148 for CRN details and list of approved provinces
How it Works
The Helical Separator does not rely on any moving parts for oil separation.
As the oil laden hot gas enters the separator it is directed in a spiral motion
around a helical flighting. The centrifugal forces act on the gas/oil mixture
causing heavier oil particles to spin to the perimeter where they impact an
internal screen. The screen layer functions as both an oil stripping and
draining medium. Separated oil flows downward along the boundary of the
shell through a baffle and into an oil collection chamber. The specially
engineered baffle isolates the oil collection chamber and eliminates oil re-
entrapment by preventing turbulence. The virtually oil free refrigerant gas
then exits through a screen fitting just below the lower edge of the helical
flighting. Oil flow out of the separator is controlled by an oil float assembly in
the bottom of the collection chamber. The oil may be returned directly to the
compressor or to an Oil Management System.
Installation - Notes
Full instructions are given in the Oil Level Control Manual, included with each
Henry Technologies' Helical Oil Separators rely on adequate gas velocities to
allow for oil extraction from the hot gas so sizing according to the DCFM
rating is important. The Helical Oil Separator DCFM Rating table shows the
min/max ratings allowed for sufficient separation and low pressure drop.
When sized correctly the helical models will separate up to 99% of the oil
from the hot gas. Please contact Technical Support at 1-800-627-5148 for
assistance or recommendations when selecting Oil Separators.