The AirTAC GFR30010ALJF2GK 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 GFR30010ALJF2GK is a GFR300 series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is the size 300 unit with a G3/8 (BSPP) port, 40 um standard filter element, automatic drain, low-pressure regulator type, an embedded square gauge with psi scale, and a reverse/check valve fitted. No mounting bracket is included with this code. With the automatic drain, collected condensate is expelled without manual attention, which suits installations that are not checked daily.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, PT as standard and G or NPT as order options, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um (W) filtration, gauge scales in MPa, psi or bar, and a low-pressure (L) type. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR30010ALJF2GK 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 — square, 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. 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). |
| F | Gauge shape: Square. 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
A fixture builder can use this low-pressure type filter regulator to feed clamping cylinders that must hold at a reduced, stable pressure, with the psi gauge giving operators a direct local reading and the check valve helping hold the set pressure against upstream dips.
On a cartoning or wrapping line, this G3/8 unit filters water and particles from the shop air and regulates supply to the machine's actuators, while the automatic drain keeps condensate off the bowl during long production runs.
A light-duty press or forming station that works below standard line pressure can take its air through this low-pressure type filter regulator, combining clean, moisture-reduced air with a regulated setting read directly in psi.
Start with the size and port: 300 is the mid-range frame, and the G3/8 thread here is the G (BSPP) option - PT is the catalogue standard and NPT can be ordered instead, so match the thread to your existing fittings. This unit carries the 40 um standard element; specify the W code if the downstream equipment needs 5 um filtration. The automatic drain frees you from periodic bowl draining; choose manual or differential-pressure drain codes if your maintenance routine prefers them. The square gauge is fitted with a psi scale, and MPa or bar scales are available. Because this is the L (low-pressure) type, confirm the regulation range you need with us before ordering - the exact range for this variant is not published in the material we hold. Flow for the GFR300 is published as curves, not a single rated figure, so send us your flow requirement 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 one number here. Tell us your flow requirement and operating pressure and we will confirm the sizing from the datasheet on request before you order.
The A in the code sets the automatic drain, so condensate collected in the PC bowl is expelled without manual draining - useful where the unit is not checked every day. The F2 sets the embedded square gauge with a psi scale; MPa or bar scales, or an external round gauge, are available as order options.
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.