1. INTRODUCTION
The ZEKS OS Series Oil/Water Separators have been specially developed to separate oil from condensate
extracted from compressed air systems and is effective with all types and makes of compressors, oils and drain
valves. Lubricant carryover in the separated water is 10ppm or lower.
Polyglycol models, indicated by (PG), require a Polyglycol Absorption element for Tower #1. The Carbon
Finishing Element for Tower #2, and the Carbon Finishing Element for the OSEXT, do not change for Polyglycol
applications.
For applications greater than 1250 scfm, the OSEXT can be added to an OS1251 to increase condensate han-
dling capacity up to a 2,500 SCFM system. The OSEXT model can not be utilized as a stand alone oil/water
separator.
2. ABBREVIA
TED WARRANTY
ZEKS OS Series Oil/Water Separators are warranted to be free from defects in material and workmanship for a
period of 12 months from date of start-up but not to exceed 18 months from date of shipment from the factory.
This warranty covers replacement parts. Labor coverage does not apply. Normal maintenance such as drain
cleaning and consumable element replacement are not covered by this warranty.
3. OS OIL/W
ATER SEPARATOR NOMENCLATURE
Model Number Air Compressor Capacity Application
OS300 Up to 300 scfm Mineral, Synthetic, Semi-Synthetic Oils,
Stable Emulsions
OS300PG Up to 300 scfm Polyglycol
OS751 300-750 scfm Mineral, Synthetic, Semi-Synthetic Oils,
Stable Emulsions
OS751PG 300-750 scfm Polyglycol
OS1251 750-1250 scfm Mineral, Synthetic, Semi-Synthetic Oils,
Stable Emulsions
OS1251PG 750-1250 scfm Polyglycol
OS2501 1250-2500 scfm Mineral, Synthetic, Semi-Synthetic Oils,
Stable Emulsions
OS2501PG 1250-2500 scfm Polyglycol
OSEXT* Extends Absorption time
*OSEXT is added to an OS1251 and OS1251PG to increase the handling capacity up to 2500 scfm.
4. RECEIVING
AND INSPECTION
Upon receiving your ZEKS Oil/Water Separator, please inspect the unit closely. If rough handling is detected,
please note it on your delivery receipt, especially if the separator will not be put in to service immediately.
Obtaining the delivery person’s signed agreement to any noted damages will facilitate any incurance claims.
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