The AirTAC GFR30008AJC2WK AirTAC Filter Regulator 1/4 in, 5 um, Auto is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a automatic 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 GFR30008AJC2WK is a GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This configuration is sized for PT1/4 (1/4 in) ports with PT thread as the standard, carries a 5 um filter element (the finer of the two available grades), and drains condensate automatically, so the bowl keeps working without anyone opening the drain by hand. Regulation is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, a round external gauge reading in psi is fitted, and a reverse (check) valve is built in. The polycarbonate bowl is supplied without a mounting bracket.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options for drain type, filter grade, gauge style and scale, thread form (PT standard, G or NPT to order) and bracket. Rated flow for this family is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30008AJC2WK AirTAC Filter Regulator 1/4 in, 5 um, Auto |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, pressure-controlled air to the tool-clamp and chip-clearing circuits of a CNC machining centre, with the 5 um element protecting tight-tolerance valves and the automatic drain coping with condensate from a shared compressor ring main.
Conditions the air feeding conveyor stoppers, diverters and carton-closing cylinders on a packaging line, where the regulator holds a stable setting shift after shift and the check valve holds downstream pressure if the main supply dips.
Serves a spray-booth air drop where water carry-over ruins finish quality: the 5 um element strips moisture and particles ahead of the regulator, and the automatic drain removes collected condensate without an operator visiting the booth.
Choose the size step by the flow your line needs: 200, 300, 400 and 600 step up in both port size and capacity, with this unit at size 300 on PT1/4 ports. Decide the drain first: automatic (as fitted here) suits unattended duty, manual suits periodic checks, and differential-pressure is the catalogue default. Pick the filter grade against the sensitivity of the downstream equipment - 5 um as fitted here, or 40 um as the standard element. Select the gauge style (embedded square as standard, external round as fitted here) and its scale in MPa, psi or bar, and confirm the thread: PT is the standard, with G (BSPP) and NPT available as order options. A bracket is optional; this unit is supplied without one. Because rated flow is published as curves rather than a single number, send us your application details and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number on the page. Tell us your line pressure, downstream demand and allowable pressure drop, and we will confirm the flow figures from the datasheet on request before you order.
The A in the code means the bowl drains condensate automatically, which suits units mounted in awkward spots or on lines that run unattended. The catalogue also offers manual drain (code M) and the differential-pressure drain as the default; choose manual if you prefer a visible, operator-controlled dump on a regularly attended station.
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.