The AirTAC GFR300C08ALNWT AirTAC Filter Regulator, NPT1/4, 5 um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR300C08ALNWT is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 5 um filter element (code W), an automatic drain that ejects collected condensate without manual attention, a metal bowl, and the low-pressure regulator type. The port is 1/4 in with NPT thread. No gauge is fitted (code N), and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. G-series filter regulators are offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and with choices of drain type, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT thread. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR300C08ALNWT AirTAC Filter Regulator, NPT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
On a carton-forming or case-sealing line, this unit filters the shop air and holds a reduced, stable supply pressure to the cylinders that fold and clamp the cartons, while the automatic drain clears condensate between shifts.
On pneumatic test benches and lab automation rigs, the 5 um element protects sensitive valves and actuators from particles and water while the low-pressure regulator trims the supply down to the gentle pressures those devices need.
On sorting conveyors with air-powered diverters, stop gates and pushers, this filter regulator cleans the supply and regulates it to the pressure the gate cylinders were designed for, draining accumulated water automatically.
Size and port step up with flow demand: 200, 300, 400 and 600 bodies take ports from 1/8 in to 1 in, so choose the size whose flow curve covers your consumption - we can check that curve against your application on request. This unit is built with a 5 um element (the 40 um standard element is the version without the W code) and an automatic drain; manual and differential-pressure drains are the other catalogue options on GFR units. The low-pressure regulator type (code L) is fitted here; its exact adjustment range is not published in the catalogue, so confirm it with us. Round or square gauges with MPa, psi or bar scales, PT, G or NPT thread, and the bracket are the remaining decode choices - this unit includes the bracket and no gauge.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow data from the datasheet so you can size the unit correctly.
The automatic drain (code A) ejects collected condensate on its own, which suits unattended or intermittent-duty installations. The catalogue also offers manual and differential-pressure drains on GFR units, and this unit carries the 5 um element versus the 40 um standard - both are decode choices you can specify in the model code.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.