OIL SEPARATOR - For Screw Units, Oil Return to Compressor
The oil separator uses centrifugal and collision separation to remove oil from discharge gas and return it to the crankcase for reliable lubrication.
Match compressor displacement, connection size and system pressure; Kilterra covers multiple styles for scroll and piston compressors.
As a key protective component for compressors, Kilterra refrigeration oil separators pass strict leak tests for reliable quality.
Kilterra oil separators cover multiple connection and mounting styles, compatible with scroll and piston compressors, available for bulk supply.
Six core advantages that keep your refrigeration system protected around the clock
Centrifugal plus filtration separation achieves over 99% efficiency so discharge gas is virtually oil-free.
Separated oil flows back to the crankcase through the oil-return line, maintaining lubrication and reducing top-ups.
A high-strength steel shell handles high screw-compressor discharge pressure safely.
Keeps oil out of condenser and evaporator to preserve heat-transfer efficiency and cut running cost.
Multiple connection sizes and types fit different screw-compressor brands, easy to install.
37 years of experience, strict quality control and ISO9001 certification for stable long-term running.
Detailed parameters for a precise match to your application
| Model | Connection Size | Compressor Type | Separation Efficiency | Shell Material | Mounting |
|---|---|---|---|---|---|
| OVS-084S | 1/2" | 10-30HP screw units | >99% | Steel | Discharge line |
| OVS-138S | 3/4" | 30-50HP screw units | >99% | Steel | Discharge line |
| OVS-158S | 7/8" | 50-80HP screw units | >99% | Steel | Discharge line |
| OVS-218S | 1-1/8" | 80-120HP screw units | >99% | Steel | Discharge line |
| OVS-258S | 1-5/8" | 120-200HP screw units | >99% | Steel | Discharge line |
| OVS-318S | 2-1/8" | 200-300HP screw units | >99% | Steel | Discharge line |
Widely deployed across commercial and industrial refrigeration
Discharge-line oil separation for screw chillers and air-source screw heat pumps.
Oil separation protection for screw units in large cold/freezer rooms.
Screw systems in chemical, food and pharmaceutical plants.
Oil separation for shipboard screw units, tolerant of vibration.
Kilterra delivers professional refrigeration component solutions with OEM/ODM support.
For screw compressor systems, oil separator sizing hinges on discharge volume flow rather than nominal tonnage, since pressure drop across the element directly affects oil carryover. Kilterra OVS units are rated for R134a, R404A, R507 and R407C duty, with connection sizes from 1/2" to 4" and shell pressures up to 4.5 MPa, so OEMs can match a separator to a specific rack without oversizing the vessel. Each unit is helium leak-tested and shipped with documentation for export markets including Europe, the Middle East and Southeast Asia.