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Air/Oil Separators | Separator Cross Reference by OEM | Installation & Troubleshooting a Separator

Air/Oil Separators

Air Oil Separators

Lubricated rotary screw air compressors mix oil with the intake air to lubricate the compressor's screws. After the air is compressed an air/oil separator separates compressed air from compressor oil. The compressor lubricant collects at the bottom of the separator tank and the compressed air continues to the air receiver. A standard rotary screw separator reduces the lubricant entrained in the compressed air to 2-3 ppm. Under normal operating conditions an oil separator's service life is 4,000 to 6,000 operating hours.

OEM Part Number Reference

Oil Separator Cross Reference by Manufacturer

eCompressedair sells replacement air oil separators. Our air/oil separators are rated better than the OEM part or equivalent. Replacement air/oil separators for all OEM manufacturers are available. To find a replacement air oil separator click on the manufacturer below.

ABAC
Airman
Airmaze
Alup
Atlas Copco
Bauer
Becker Pump
Boge
Boss
Bottarini
Broomwade
Campbell Hausfeld
Canair
Ceccato
Champion
Chicago Pneumatic
CompAir
Curtis
Davey
Demag
Devilbiss
Dresser Rand
Drilltech
Flottman
Fluidair
Furakawa
Gardner Denver
Grainger
Grimmer Schmidt

Hitachi
HydraScrew
Hydrovane
Ingersoll Rand
Jaeger
Joy
Kaeser
Kellogg
Kobelco
LeRoi
Mahle
Mann
Mark
Mattei
Multiquip
Pureaire
Quincy
Redmax
Rogers
Rotair
Rotorcomp
Schramm
Smith
Sullair
Sullivan Palatek
Tamrock
Tipneu
Travaini
Vilter
Webster
Worthington
Zander

Oil Separator Function

Rotary screw compressors and rotary vane compressors inject compressor oil right into the compression chamber with the air being compressed. The oil serves as a coolant and lubricant absorbing the heat of compression. The main benefit of using compressor lubricant as a coolant is a steady air compressor operating temperature no matter what duty cycle, thus creating a continuous duty air compressor.

Injecting the compressor oil into the compression chamber also creates a problem. The compressed air is full of oil when it leaves the compressor air end. The compressor lubricant needs to be removed to protect the air system and to return it to the oil sump so the compressor lubricant can be used over and over again.

The oil separator is the component that separates the compressor lubricant from the compressed air and returns it to the main oil sump.

Air/Oil Separator Types

Wrap Style Oil Separator

1. Conventional Wrap Style Air/Oil Separators
Most wrap-style oil separators are glass fiber elements with a consistent pore size. The wrap style oil separator was the original design to remove oil aerosols from compressed air streams. In general, a pleated or deep air oil separator retrofit will add service life and reduce oil carryover.
Pleated Style Air Oil Separator

Pleated Style Air Oil Separator

2. Pleated Air/Oil Separators
A filter pleat that looks a little like a wave is added to the air-oil separators media during manufacturer. Pleated filter media increases the air-oil separators capacity. Pleated oil separators can handle on average two times the air flow of a conventional air-oil separator.
Deep Style Oil Separator

Deep Style Oil Separator

3. Deep Filter Air Oil Separators
Deep filter air/oil separators have several grades of glass fiber filter media wrapped on them. The benefit of a deep filter separator is increased air flow capacity similar to a pleated separator, while maintaining a low initial pressure drop and residual oil content. These separators can handle more oil aerosol than a conventional or pleated separator.
4. Spin-on Air-Oil Separators
Typically a spin-on air-oil separator is a deep style air-oil separator placed inside a spin-on filter can. Spin-on Air-Oil Separators are extremely easy to change-out but are limited in application because of air flow capacity restrictions.
5. Refrigeration and Natural Gas Air-Oil Separators
Special materials of construction are used in these oil separators to ensure chemical compatibility with gases including freon, ammonia, and natural gas. These gases and other material often present in natural gas are not compatible with standard air/oil separators, therefore the need for special refrigeration and natural gas air-oil separators.

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Air/Oil Separator Cross Reference by Manufacturer

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