The AirTAC GFR300C08AC3WT AirTAC Filter Regulator NPT1/4 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 AirTAC GFR300C08AC3WT is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This configuration is built around 1/4 in NPT ports, a 5 um filter element for finer filtration than the standard 40 um grade, and an automatic drain that expels collected condensate from the polycarbonate bowl without manual attention. The round pressure gauge supplied reads in bar, and the unit includes a mounting bracket for secure installation.
This is a genuine AirTAC part. The GFR filter-regulator line covers sizes 200, 300, 400 and 600 with port options from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C08AC3WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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) |
Feeds the clamping and fixture circuits of a CNC machining centre, where the 5 um element helps protect precision valves and cylinders and the regulator holds a steady set pressure on the fixture line.
Supplies the flap-tuck and tape-head cylinders on a carton sealing machine, with the automatic drain clearing condensate from the bowl so the line keeps running through shifts without manual draining.
Conditions the air feeding pick-and-place modules on an electronics assembly bench, where clean, regulated low-pressure air supports consistent vacuum generation and gentle part handling.
Size 300 with 1/4 in NPT ports is the right step when your line sits in the mid-flow band of the GFR range; step up to size 400 or 600 for larger demand, or down to size 200 for compact circuits. The 5 um element (code W) suits downstream equipment that tolerates less particulate than the standard 40 um grade. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drain versions exist if you prefer scheduled or load-linked draining. The supplied round gauge reads in bar, and square embedded gauges with MPa, psi or bar scales are available. PT is the standard thread; G and NPT are order options, and this unit is ordered in NPT.
Flow for this series is published as curves, not a single rated figure, so we cannot quote one number honestly. Send us your application details and we will confirm sizing against the datasheet curves before you order.
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 the GFR300 series as curves, not as a single rated number, so we do not quote a figure that the catalogue does not state. Tell us your application and operating pressure and we will confirm the relevant datasheet curve and sizing on request before you order.
In the code GFR300C08AC3WT, the A position selects the automatic drain, which ejects collected condensate from the bowl without manual intervention, and the W position selects the 5 um filter element instead of the standard 40 um grade. The C3 gauge code adds the round gauge reading in bar, and the trailing T orders 1/4 in NPT threads.
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.