The AirTAC GFR300C08AJF2WK AirTAC Filter Regulator PT1/4 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 GFR300 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in a single body. This GFR300C08AJF2WK is built for a 1/4 in PT port, with a 5 um filter element for finer filtration than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and an embedded square gauge reading in psi. A reverse (check) valve is fitted, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for manual or differential-pressure drains, 40 um or 5 um elements, MPa, psi or bar gauge scales, G or NPT threads, and brackets. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the regulation range with this automatic drain is 0.15-0.9 MPa (20-130 psi). Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR300C08AJF2WK AirTAC Filter Regulator PT1/4 |
|---|---|
| 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) |
Feeding filtered, regulated air to a CNC machine's pneumatic tool-clamp and chip-blow-off circuits, with the 5 um element protecting fine valve seats and the check valve holding the setpoint through upstream pressure dips.
Regulating air to carton-sealing, labelling and wrap stations on a packaging conveyor, where the automatic drain clears condensate through multi-shift runs without an operator stopping to bleed the bowl.
A point-of-use filter regulator on the drop feeding air cylinders, air tools and clamping fixtures at an assembly-line station, with the psi gauge giving operators a local, readable setpoint.
Size the unit by the flow your line needs: step up from GFR300 (1/4 in) to GFR400 (1/2 in) or GFR600 (1 in) as demand grows, or down to GFR200 (1/8 in) for compact circuits. Choose the drain to match your maintenance routine: automatic (this unit) suits unattended duty, manual drain suits regularly serviced installations, and the differential-pressure default triggers on a set pressure drop. The 5 um element (code W) is for finer air quality than the 40 um standard; the square gauge here reads psi, with MPa and bar scales and an external round gauge available. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket can be added if this no-bracket version does not suit your panel. Flow is published as curves, not a single rating, so send us your demand figures and we will confirm sizing against the application 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your line's air demand and working pressure and we will confirm the flow from the datasheet and check the sizing against your application before you order.
The A in this code specifies an automatic drain, which ejects collected condensate without daily attention - useful on unattended or multi-shift installations. Manual-drain and differential-pressure versions of the same GFR300 filter regulator can be ordered if your maintenance routine suits them better.
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.