The AirTAC GFR30010ALJC2G AirTAC Filter Regulator G3/8 Low-Pressure 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 PT3/8" 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 GFR300 series combines water-and-particulate filtration and pressure regulation in a single body, so one component does the job of a separate filter and regulator. This unit, GFR30010ALJC2G, is the 300 size with G3/8 (3/8 in) ports, a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, and a fitted round gauge reading in psi. It is the low-pressure regulator type, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with a choice of PT, G or NPT threads, manual, automatic or differential-pressure drains, a 5 um (code W) element option, and gauge variants. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30010ALJC2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| L | Low-pressure 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. |
| (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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Mounted at the drop feeding a fixture's clamp cylinders, this unit strips water and chips-laden particulate from the shop air and holds the regulated low-pressure setting the clamps are designed for, with the psi gauge giving the operator a visible setpoint.
On a food or carton packaging line, conveyor stoppers and pushers need clean, moisture-limited air at a steady pressure. The automatic drain keeps condensate off the valves during unattended shifts, and the 40 um element protects the downstream cylinders.
Where a 3/8 in branch drop serves a work cell of air tools or small actuators, this filter regulator conditions the air locally: filtration plus regulation in one body saves panel space, and the low-pressure type suits circuits running below standard plant pressure.
Start with size and port: GFR comes in 200, 300, 400 and 600, each step up giving a larger port and more flow, so match the 300 size and its 3/8 in connection to the air consumption of the machine it feeds. Choose the drain to suit access: automatic (as here) suits enclosed or infrequently attended installations, manual suits supervised stations, and differential-pressure is the catalogue default. Filter grade is 40 um standard; specify code W for 5 um where finer particulate capture is needed. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit carries a round psi gauge. Thread is G (BSPP) here; PT is the standard and G/NPT are order options. A bracket is optional (not fitted on this code).
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the datasheet figures and correct size 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 GFR series as performance curves rather than a single rated figure, so we do not state a flow number here. Tell us your application - port size, downstream consumption and line pressure - and we will confirm the datasheet flow curve and check the 300 size is right for you before you order.
The A in the code fits an automatic drain, which discharges collected condensate from the PC bowl without anyone opening it - useful for enclosed panels or rarely attended cells. The GFR family also offers manual (code M) and differential-pressure (blank) drains, so you can order the variant that matches how often your installation is serviced.
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.