Brand: Donaldson

Donaldson P-SRF C LifeTec Sterile Air Filter Element

Name: Donaldson P-SRF C Sterile Air Filter Element | Seven Star
Brand: Donaldson
SKU: P-SRF C

Description

A stainless steel sterile element for compressed air and process gases

The Donaldson P-SRF C is the LifeTec sterile depth filter element for compressed air, carbon dioxide, fermentation air and technical gases. It is a pleated borosilicate depth medium, impregnated with PTFE, held between inner and outer liners and end caps of stainless steel 1.4301. Donaldson quotes retention of better than 99.99999995 percent at 0.2 and 0.02 micrometre and better than 99.999999991 percent at 3 nanometre, the latter in a DIN EN 1822 adopted test.

The element is aimed at dairies, breweries, food plants, pharmaceutical and chemical users who must deliver sterile air to a product contact point. Because the construction is all stainless steel it survives repeated steam sterilisation, and it can be steamed in either flow direction.

Technical specifications

Parameter	Specification
Type	LifeTec (P)-SRF C, pleated sterile depth filter element
Retention	More than 99.99999995 percent at 0.2 um and 0.02 um; more than 99.999999991 percent at 0.003 um
Microorganism challenge	LRV above 9 for Brevundimonas diminuta (0.2 um) and MS2 coliphage (0.02 um); above 10 for nano-sized particles
Filtration surface	0.3 m2 per 10 inch (254 mm) element
Operating temperature	-20 C to +200 C, dry conditions
Maximum differential pressure	5 bar (73 psid), either flow direction
Typical compressed air service life	12 months
Steam sterilisation	More than 160 cycles at 121 C (30 min), 131 C (20 min) or 141 C (10 min)
VPHP suitability	130 C at more than 5,000 ppm H2O2, more than 50 hours
Materials	Borosilicate medium with PTFE impregnation, stainless steel 1.4301 liners and end caps, silicone potting and O-rings (EPDM, FEP over silicone or FEP over Viton optional)
Regulatory declarations	FDA 21 CFR (177.2260, 177.1550, 211.65, 177.2600), (EC) No. 1935/2004 for indirect food contact
Quality assurance	Integrity tested to ASTM D 2986-91 and EN 1822; 2.2 certificate to DIN EN 10204 on request

Sizes and flow

0006: Element 03/10; Nominal flow m3/h 60; Maximum flow m3/h 90
0012: Element 04/20; Nominal flow m3/h 120; Maximum flow m3/h 180
0027: Element 05/25; Nominal flow m3/h 270; Maximum flow m3/h 360
0048: Element 07/30; Nominal flow m3/h 480; Maximum flow m3/h 720
0072: Element 10/30; Nominal flow m3/h 720; Maximum flow m3/h 1,080
0108: Element 15/30; Nominal flow m3/h 1,080; Maximum flow m3/h 1,440
0144: Element 20/30; Nominal flow m3/h 1,440; Maximum flow m3/h 1,920
0192: Element 30/30; Nominal flow m3/h 1,920; Maximum flow m3/h 2,280

The flows apply at 7 bar(g); the sheet adds a pressure correction factor from 0.13 at 0 bar(g) to 2.13 at 16 bar(g). Element sizes from 03/10 to 30/50 are available with the uf-plug connection, and Code 7 (two 226 O-rings, bayonet with two locking tabs and a locating fin) is offered in 5, 10, 20 and 30 inch lengths.

Choosing C against the other P-SRF grades

P-SRF C is the standard sterile air grade for compressed air service. The P-SRF V version of the same construction is designed for tank venting where CIP reagents are present, and P-SRF X uses a hydrophobic PTFE membrane and is rated for far more sterilisation cycles. Select C where the application is continuous compressed air or gas, 12 months is a realistic element life, and steaming is done a few times a month.

The sheet also shows a de-wetting test after 30 minutes of 121 C steaming at 1 bar(g): flow of 140 Nm3/h at 2 bar absolute reaches normal operating conditions after about 20 seconds.

Documents and quotation

To order P-SRF C, please settle the element length, end cap code and O-ring material using Donaldson LifeTec P-SRF C sterile filter elements data sheet (F119044), which is attached here, and then write to us. More in Filtration Elements.

Datasheets & Documents

Datasheet Donaldson LifeTec P-SRF C sterile filter elements data sheet (F119044) 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.