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Brand: Donaldson
Donaldson M 0035-1450 UltraPleat Coalescing Filter Element
Description
A pleated polyester element for general compressed air purification
The Donaldson M 0035-1450 is the UltraPleat M filter element, a pleated depth filter with a coated micro fibre polyester fleece for removing oil and water aerosols and particles from compressed air and gases. It sits in the middle of the Donaldson industrial grade ladder: finer than the wrapped V and CF types, and an economical choice where the extra retention of the S grade is not needed.
Ten element sizes run from 35 to 1,450 m3/h at 7 bar(g). A coding clip in the filter bowl switches the flow direction, so the same element can work as a coalescing filter (inside to outside) or as a dust filter (outside to inside).
Technical specifications
| Parameter | Specification |
|---|---|
| Size range | 0035, 0070, 0120, 0210, 0320, 0450, 0600, 0750, 1100, 1450 |
| Nominal flow | 35 to 1,450 m3/h at 7 bar(g), referred to 1 bar abs. and 20 C |
| Filter media | Micro fibre polyester fleece, polypropylene support mesh, polyester coalescence sleeve |
| Support liners | Stainless steel 1.4301 / 304, inner and outer |
| End caps | Glass fibre reinforced polymer |
| O-rings / bonding | Viton, silicone-free and compound-free (standard); polyurethane |
| Oil retention (sizes 0035-1100) | 99.4 to 99.9 percent at 8 bar abs. and 10 mg/m3 inlet; residual oil 0.01 to 0.06 mg/m3 |
| Oil retention (size 1450) | 99.0 percent; residual oil 0.1 mg/m3 at 10 mg/m3 inlet, 0.3 mg/m3 at 3 mg/m3 |
| Particle retention (0.01 um) | 99.999 percent at 1 bar abs. |
| Validation | ISO 12500-1 (oil aerosol) and ISO 12500-3 (particles); compliance certificate to DIN EN 10204 2.2 |
| Flow direction | Selectable with the coding clip in the bowl |
Sizes and sizing at other pressures
- 0035: Nominal flow m3/h 35
- 0070: Nominal flow m3/h 70
- 0120: Nominal flow m3/h 120
- 0210: Nominal flow m3/h 210
- 0320: Nominal flow m3/h 320
- 0450: Nominal flow m3/h 450
- 0600: Nominal flow m3/h 600
- 0750: Nominal flow m3/h 750
- 1100: Nominal flow m3/h 1,100
- 1450: Nominal flow m3/h 1,450
The flow figures apply at 7 bar(g). For another operating pressure divide the real flow by the conversion factor from the sheet, which runs from 0.25 at 1 bar(g) through 1.00 at 7 bar(g) to 2.13 at 16 bar(g). The sheet works through an example: 350 m3/h at 9 bar(g) becomes 280 m3/h at nominal conditions and selects size 0320.
What the validation figures tell a buyer
Donaldson publishes type-test results with each sheet. For M sizes 0035 to 1100 the particle retention rises from 99 percent in the 0.19 to 0.24 micrometre band to 99.999 percent at 0.52 to 0.81 micrometre, and size 1450 is listed separately at 100 percent for 0.5 micrometre and 96.4 percent for 0.2 micrometre. Differential pressure curves in dry and oil-saturated condition are given up to 300 mbar.
The applications named are protection of refrigeration dryers, a high-performance coalescing stage in a central station, final filtration of control and process air and paint-shop finishing air. Industries listed include chemical and pharmaceutical, surface finishing, machine building and power generation.
Documents and quotation
Our team replies to M 0035-1450 enquiries with terms. Agree the element size, the flow direction and the housing it fits with the system designer, and keep Donaldson UltraPleat M-Series filter elements data sheet (F119072, 01/2026) to hand. Other listings: Filtration Elements.
Datasheets & Documents
- Datasheet Donaldson UltraPleat M-Series filter elements data sheet (F119072, 01/2026) 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.
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Frequently Asked Questions
What is the UltraPleat M element?
It is a pleated depth coalescing and particle element for compressed air with a coated micro fibre polyester fleece, sizes 0035 to 1450.
How is it validated?
Performance data follow ISO 12500-1 for oil aerosols and ISO 12500-3 for particles, with a DIN EN 10204 2.2 compliance certificate included in the data sheet.
What oil retention does it reach?
For sizes 0035 to 1100 the type test gives 99.4 to 99.9 percent at 8 bar absolute and 10 mg/m3 inlet; size 1450 is listed at 99.0 percent.
Can the flow direction be changed?
Yes. The coding clip in the filter bowl selects coalescing or particle-filter flow direction.
What are the end caps and O-rings made of?
Glass fibre reinforced polymer end caps and silicone-free Viton O-rings as standard.
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