Brand: Donaldson

Donaldson UFK-L 0065-5000 Air-Cooled Compressed Air Aftercooler

Name: Donaldson UFK-L Air-Cooled Aftercooler | Seven Star LLC
Brand: Donaldson
SKU: UFK-L 0065-5000

Description

An air-cooled aftercooler with cyclone separator, 65 to 5,000 m3/h

The Donaldson UFK-L aftercooler cools compressed air straight after the compressor so that downstream filters, dryers and drains work on cooler, drier air. Hot air is led over cooling pipes while a fan blows ambient air across them, and the condensate that forms is removed by a cyclone separator. The data sheet says it can be used for other gases as well as air.

Twelve housing sizes are offered, from type 0065 to type 5000, covering a flow of 65 to 5,000 m3/h. The cooler sits in a steel plate cabinet with an integrated fan motor, and a matching Donaldson cyclone separator (DF-C or SG-Z) is listed for each size.

Technical specifications

Parameter	Specification
Series	UFK-L air-cooled aftercooler, types 0065 to 5000 (12 sizes)
Flow capacity	65 to 5,000 m3/h at 7 bar, 120 C inlet, outlet 10 C above ambient
Maximum operating pressure	16 bar (0065-0300); 12 bar (0450-5000)
Test pressure	24 bar (0065-0300); 18 bar (0450-5000)
Maximum operating temperature	120 C
Maximum ambient temperature	45 C
Housing material	Carbon steel, polyester resin coating or cathodic dip-coating
Connections	1 inch to 2 1/2 inch BSP; DN 80 to DN 150 on the larger types
Fan motor supply	230 V/1/50 Hz (0065-0125); 400 V/3/50 Hz (0175-5000)
Cyclone separator	DF-C 0120 to 1100, or SG-Z 1950 to 5000, by size

Sizes, power and weight

0065: Air flow m3/h 60; Fan airflow m3/h 20; Power W 800; Weight kg 20; Cyclone DF-C 0120
0125: Air flow m3/h 120; Fan airflow m3/h 20; Power W 800; Weight kg 22; Cyclone DF-C 0210
0300: Air flow m3/h 240; Fan airflow m3/h 135; Power W 3,790; Weight kg 34; Cyclone DF-C 0320
0750: Air flow m3/h 720; Fan airflow m3/h 760; Power W 8,200; Weight kg 97; Cyclone DF-C 0750
1350: Air flow m3/h 1,200; Fan airflow m3/h 660; Power W 12,000; Weight kg 240; Cyclone SG-Z 1950
5000: Air flow m3/h 4,500; Fan airflow m3/h 2 x 470; Power W 2 x 8,400; Weight kg 390; Cyclone SG-Z 5000

Selected sizes are shown; the data sheet lists all twelve. Flow is quoted for 7 bar and the conditions in the table above, so other conditions need a correction.

Correction factors

The sheet gives correction factors for ambient temperature (1.04 at 20 C falling to 0.65 at 45 C), operating pressure (0.86 at 5 bar rising to 1.22 at 12 bar), the temperature difference between air inlet and outlet, and the air inlet temperature (1.59 at 60 C down to 1.00 at 120 C). Apply them to the nominal flow before choosing a type, especially for hot rooms or a high inlet temperature.

Fit the aftercooler between compressor and receiver or filter train, and drain the cyclone with a zero-loss drain such as the UFM-D or UFM-P listed in our Donaldson condensate pages. Allow clear airflow around the cabinet so the fan can pull in ambient air.

A cooler outlet temperature only 10 C above ambient also lowers the dew point load on a refrigerated dryer or adsorption dryer further down the line, because most of the water vapour has already condensed and left through the cyclone. The sheet draws two cabinet layouts, one for types 0065 to 1350 and one for types 1950 to 5000, so check the drawing for the footprint and the flange or thread positions before you plan the pipework and the electrical feed.

Documents and quotation

UFK-L 0065-5000: request a quote from this page. The attached Donaldson UFK-L aftercooler 0065-5000 technical data sheet (F119090) is the reference, and the type size, supply voltage and site ambient temperature should be checked against it. Also see Cooling.

Datasheets & Documents

Datasheet Donaldson UFK-L aftercooler 0065-5000 technical data sheet (F119090) Download

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About brand

Donaldson is the American filtration company founded in Minnesota in 1915. It started when Frank Donaldson Sr. built an air cleaner for a tractor engine that kept failing in dusty fields. It is now headquartered in Bloomington, Minnesota, and makes filters and filtration systems for engines, hydraulics, compressed air and gases, dust collection and process liquids.

Seven Star LLC is an independent supplier in Muscat. We list Donaldson compressed air dryers and filters, gas filter housings, activated carbon adsorbers, hydraulic and fuel filtration and dust collectors, and supply them and their replacement elements in Oman and the GCC.

Donaldson company profile

Established	1915, Minnesota, USA, by Frank Donaldson Sr. and his family
First product	An air cleaner for tractor engines
Headquarters	Bloomington, Minnesota
Product families	Engine air and fuel filters, hydraulic and lube filters, compressed air and gas filters and dryers, dust collectors, process and sterile filtration

Milestones

1915: Frank Donaldson Sr. builds an air cleaner for a tractor that kept failing in a dusty field; the family starts Donaldson Company in Minnesota.
1917: Air cleaners are supplied for artillery tractors.
1920s: Exhaust products are added after crop fires caused by engine sparks.
1974: Donaldson acquires Torit, the dust collector business.
2015: The company marks its 100th year.

Donaldson products we list

Family	Models	Typical use
Compressed air filters and drains	DF Ultra-Filter, DF-T three-stage, DF-C cyclone, UFM-P drain	Removing water, oil and particles from compressed air
Adsorption and refrigeration dryers	Ultrapac HL, HRE+, HRS+, HRS-L+, HLP, Buran, Bora, HRC-T hydrogen	Instrument air with a low dew point, high-pressure air and gas drying
Activated carbon and breathing air	Ultrasorp AKC, Ultrasorp Smart, Ultrapure ALG breathing air, A element, AK element	Removing oil vapour and odours for food, pharma and breathing air
Gas filter housings	EG (ATEX), HD high-pressure	Process gases and high-pressure gas filtration
Hydraulic and fuel filtration	FLK, HNK Duramax, filter cart, Filter Buddy, T.R.A.P. breather, P568583, P574958, AG1398001 skid	Cleaning hydraulic oil and bulk fuel and keeping moisture out of tanks
Dust collection	DCE 125 B bin vent	Silo and bin venting for cement, powders and bulk solids

Compressed air quality is set by ISO 8573-1 classes for particles, water and oil. A typical instrument air system uses a coarse filter and a fine coalescing filter before the dryer, an adsorption dryer for a low pressure dew point (for example -40 °C), and a dust filter after it. An activated carbon stage removes oil vapour where the air touches food or is breathed. Heatless dryers use some of the dry air to regenerate the desiccant, while heat-regenerated and zero-purge types save that air on larger systems.

Where Donaldson products are used

In Oman and the GCC, Donaldson filters and dryers are used for instrument and plant air in oil and gas, refining, power and desalination plants, for breathing air, in food and pharmaceutical production, on hydraulic systems and fuel storage, and in cement and bulk handling.

Ordering Donaldson products: what we need

Send the model and size from the nameplate. For dryers and filters, add the flow (m³/h or scfm), working pressure, inlet temperature, required dew point or ISO 8573-1 class, and the supply voltage. For replacement elements, send the element part number or the housing model.

Facts checked against Donaldson company history, October 2026.

Browse Donaldson products by category: Compressors, Filter Housings, Filtration Systems, Filtration Elements.