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Brand: Donaldson
Donaldson AG1423401 Sterile Air Manifold DN25
Description
A ready-to-install four-stage sterile air manifold with SIP leg, 320 m3/h
The Donaldson Sterile Air Manifold AG1423401 is the DN25 size of a ready-to-install air filtration solution with housings, condensate traps, isolation and throttling valves, upstream and downstream pressure gauges, a sanitary check valve and a steam inlet leg for sterilization-in-place of the manifold. It protects products and processes from particulate, organic or microbial contamination, and is paired with the Donaldson Steam Manifold for integrated steam sterilization.
The recommended four-stage element configuration is a DF-V particulate/coalescence filter, a DF-S particulate/coalescence filter, a DF-A oil vapour filter and a LifeTec P-SRF C final filter. The DN25 manifold takes 0320 elements in stages 1 to 3 and a 05/30 element in stage 4.
Technical specifications
| Parameter | Specification |
|---|---|
| Part number | AG1423401 (DN25) |
| Capacity | 320 m3/h (DN20 180; DN25 320; DN50 720) |
| Maximum operating pressure | 10.3 barg |
| Maximum temperature | 65 C; 150 C for stage 4, the final filter |
| Elements, stages 1-3 | DF-V, DF-S, DF-A size 0320, one each |
| Element, stage 4 | LifeTec P-SRF C 05/30, one |
| Connections | DIN EN 10357-A weld, inlet and outlet |
| Internal finish | Ra below 0.8 um downstream of the final filter |
| Materials | Stainless steel 1.4301 or 1.4401; EPDM or PTFE elastomers |
| Dimensions and weight | 1,944 x 361 x 1,016 mm; 14 kg |
Sizes and accessories
- DN20: Part number AG1423301; Flow m3/h 180; Weight kg 12; Length x width x height mm 1,899 x 361 x 944
- DN25: Part number AG1423401; Flow m3/h 320; Weight kg 14; Length x width x height mm 1,944 x 361 x 1,016
- DN50: Part number AG1423501; Flow m3/h 720; Weight kg 29; Length x width x height mm 2,064 x 393 x 1,192
Optional accessories are stands AG1445401, AG1445501 and AG1445601, an SIP connection AG1423601 and service kits AG1478301 (DN20) and AG1478401 (DN25 to DN50).
Design and quality
The sheet lists components from Donaldson housings, a steam trap, Ashcroft manometers and ball valves for isolation and throttling. A pneumatic leak test per EN 13480-5 is part of quality testing, and all components downstream of the final filter use materials meeting EC 1935/2004 and the FDA food contact rules in Title 21. Documentation is available on request.
Applications are the filtration and purification of compressed air and technical gases, static or dynamic tank venting, aseptic storage or packaging, product push and cooling or conveying air. Bottled water, dairy, breweries and wineries are the listed industries. Confirm element selection and the sterilization method with the process engineer before ordering.
The manifold is washdown compatible and an isolation valve lets the user sterilize either the sterile air filter or any downstream equipment. A height adjustable stand with 40 mm adjustment steps and levelling feet carries the air manifold and the steam manifold together, which reduces the footprint. The SIP connection includes a steam trap with an EN 1092-1 flange on the steam side and a weld connection on the air side. A field service team is available for troubleshooting, repairs and annual maintenance.
Documents and quotation
Quote requests for AG1423401 start from this page. Check the line size, element stages and sterilization method in the attached Donaldson Sterile Air Manifold (DN20-DN50) data sheet before you send the form. See also Filtration Systems.
Datasheets & Documents
- Datasheet Donaldson Sterile Air Manifold (DN20-DN50) data sheet Download
Reviews (0)
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 AG1423401?
The DN25 Donaldson Sterile Air Manifold, rated 320 m3/h, with four filter stages.
Does it have steam sterilization?
Yes. It includes a steam inlet leg for sterilization-in-place, and an optional SIP connection links it to the Steam Manifold.
What is the maximum pressure?
10.3 barg, with a temperature limit of 65 C, or 150 C for the final filter stage.
Which elements are recommended?
DF-V, DF-S, DF-A and LifeTec P-SRF C in stages 1 to 4.
Are filter elements included?
The part number is for the manifold; elements are ordered per the Process Filtration catalogue.
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