The AirTAC GFR30008AJC2GK AirTAC Filter Regulator G1/4, Auto Drain 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 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 GFR30008AJC2GK is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This 300-size unit is configured with a G1/4 (BSPP) port, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filtration element, a round external gauge scaled in psi, and a built-in reverse (check) valve that holds the downstream setting when upstream supply is lost. The maximum inlet pressure is 1.0 MPa (145 psi), the regulating range is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size, and no mounting bracket is included with this suffix.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options, plus choices of drain type, 5 um (W) filtration, gauge scale and check valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008AJC2GK AirTAC Filter Regulator G1/4, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) 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 | 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. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Point-of-use conditioning for a machining centre's pneumatic actuators and tool-change clamps: the 40 um element strips water and swarf-carried particulate while the regulator holds a steady setting, and the check valve keeps the set pressure during supply dips.
Feeding clamp, stop and divert cylinders on a bottling or carton conveyor. Clean, regulated air keeps clamp force repeatable shift after shift, and the automatic drain handles condensate on a line that runs unattended.
A dedicated G1/4 branch feeding air tools and small actuators at an assembly bench: the filter regulator conditions the drop locally, the psi gauge gives operators a visible setpoint, and the check valve protects the setting from upstream fluctuations.
Size and port step up together: 200 through 600 cover 1/8 to 1 inch, and the right step depends on the flow your line needs - we can check the published flow curves against your demand before you order. Drain choice matters day to day: automatic (as fitted here) suits unattended duty, manual suits periodic checks, and the differential-pressure default suits standard service. Filtration is 40 um standard; choose the 5 um (W) element where downstream valves or cylinders need finer protection. The round psi gauge fitted here is the optional external style over the embedded square gauge, with MPa, psi or bar scales available. Thread is G (BSPP) on this unit, with PT standard and NPT orderable; brackets are optional and not fitted on this suffix. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and required air consumption, and we will confirm the flow and the full datasheet figures for this model on request before you order.
The A in the code sets the automatic drain: collected condensate is ejected from the polycarbonate bowl without anyone opening it, which suits unattended equipment. The K sets a reverse (check) valve, which holds the downstream pressure setting if the upstream supply drops. Both are order-time choices - manual or differential-pressure drains, and a version without the check valve, are available in the same series.
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.