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Brand: Donaldson
Donaldson P-PT 0007-0021 Stainless Steel Liquid Filter Housing
Description
A 316L stainless steel single-round filter housing for process liquids, 7 to 21 gpm
The Donaldson P-PT is a single round filter housing in 316L stainless steel for water and corrosive liquids. The single nut closure gives a positive radial seal and easy element replacement, and the T-style in-line orientation eases installation. Connections are NPT, flange or Tri-Clamp.
Standard housings accept Code 7 and Code 2 elements, and Code 3, Code 8 and DOE versions are also offered. Applications named in the sheet are petrochemicals, process water, coolants, solvents, potable liquids and industrial water.
This page summarises the manufacturer sheet for quick reference. Compare the figures with your drawing, the existing nameplate and the operating conditions of the installation, and tell us anything that differs so the correct variant can be confirmed in writing before any order is placed.
Technical specifications
| Parameter | Specification |
|---|---|
| Series | P-PT single round housings 0007, 0014, 0021 |
| Flow capacity | 7, 14 and 21 gpm (26, 53 and 79 lpm) |
| Design pressure, NPT | 20.7 bar at 93.3 C (300 psi at 200 F) |
| Design pressure, flange / Tri-Clamp | 10.35 bar at 93.3 C in the specification block; 20.7 bar in the dimension block |
| Head and bowl | 316L stainless steel |
| Sealing nut | Nickel-plated brass |
| Gasket | EPDM; Viton, Buna and silicone available |
| Connections | 3/4 and 1 inch NPT; 1 inch flange; 1 inch Tri-Clamp |
| Drain and gauge ports | 1/4 inch NPT drain with plug; 1/4 inch FNPT gauge ports, plugged |
| Accessories included | Nut closure tool and mounting brackets |
Sizes
- P-PT 0007: Capacity lpm / gpm 26 / 7; Height A mm / in (NPT, 89 mm wide) 442 / 17.4; Element size 10/30; Weight kg / lb 3.2 / 7
- P-PT 0014: Capacity lpm / gpm 53 / 14; Height A mm / in (NPT, 89 mm wide) 696 / 27.4; Element size 20/30; Weight kg / lb 4.1 / 9
- P-PT 0021: Capacity lpm / gpm 79 / 21; Height A mm / in (NPT, 89 mm wide) 950 / 37.4; Element size 30/30; Weight kg / lb 5.4 / 12
Dimensions shown are for the 3/4 inch NPT versions; the flange and Tri-Clamp housings are wider (198 and 145 mm). Each housing takes one element.
Specifying the housing
The filter head is bead-blasted cast stainless steel and the bowl is industrial electropolished on the Code 2, 7, 3 and 8 housings (polished on the DOE versions). The sheet notes that a broad selection of elements is available to meet the compatibility and micron requirements of the process.
The two pressure statements for flange and Tri-Clamp housings differ inside the sheet (10.35 bar and 20.7 bar), so confirm the design pressure for the connection you need before ordering. State the model, connection, gasket material and element code.
The housing is built for industrial duty. The T-style in-line orientation places the inlet and outlet on the same axis, so the housing can be dropped into a straight pipe run. Mounting holes of 1/4-20 x 3/8 inch deep are provided for the brackets. Inlet and outlet gauge ports of 6 mm (1/4 inch) FNPT are supplied plugged, and the 1/4 inch NPT drain is plugged, so a differential pressure gauge can be added later. Approximate weights without an element run from 3.2 kg for the 0007 NPT housing to 7.3 kg for the 0021 flange housing.
Documents and quotation
We quote P-PT 0007-0021 on request from Muscat. Confirm the connection type, gasket material and element code against Donaldson P-PT industrial stainless steel filter housings data sheet (attached as a PDF), then submit the code. Browse Filter Housings.
Datasheets & Documents
- Datasheet Donaldson P-PT industrial stainless steel filter housings data sheet 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 P-PT housing made of?
316L stainless steel for the head and bowl, with a nickel-plated brass sealing nut.
What flows does it cover?
7, 14 and 21 gpm for the 0007, 0014 and 0021 models.
Which elements fit?
Code 7 and Code 2 as standard, and Code 3, Code 8 and DOE on request.
Which connections are available?
NPT, flange and Tri-Clamp.
Are mounting brackets included?
Yes, along with a nut closure tool.
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