The AirTAC GFR30008ALJC2 AirTAC Filter Regulator PT1/4 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 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 GFR30008ALJC2 is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for low-pressure circuits, with a PT1/4 (1/4 in) port, an automatic drain that clears collected condensate from the PC bowl without daily manual attention, a 40 um standard filter element, and a round pressure gauge reading in psi. No mounting bracket is fitted on this code.
It is a genuine AirTAC part, one of the GFR sizes from 200 to 600, with port options from 1/8 in to 1 in and thread choices of PT (standard), G or NPT. Rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C operation (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR30008ALJC2 AirTAC Filter Regulator PT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT 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. |
|---|---|
| 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)). |
| 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. |
| (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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding low-pressure paint spray guns on a finishing line: filtered, regulated air right at the gun drop, with the automatic drain keeping condensate out of the finish work.
Supplying low-pressure actuation circuits on a carton-sealing or wrapping conveyor, where one compact body handles both air preparation and pressure setting at the machine.
Conditioning bench air for lab instruments and pneumatic test rigs that run at reduced pressure, with the psi gauge giving a direct readout at the point of use.
Size and port: GFR300 takes a PT1/4 (1/4 in) connection; step down to GFR200 or up to GFR400/GFR600 as your flow demand changes. Flow is published as curves, not a single number, so ask us to confirm sizing against your application before ordering. Drain: this unit has an automatic drain, which suits unattended installations; manual and differential-pressure drains are alternative codes. Filter grade: 40 um standard, 5 um with code W. Gauge: this code carries a round gauge on the psi scale; the embedded square gauge and MPa/bar scales are the other options. Thread: PT is the standard; G and NPT are order options. No mounting bracket is fitted on this code.
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 GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet flow figures against your required flow before you order.
The A in the code means the PC bowl discharges collected condensate automatically, with no daily manual draining. Manual-drain and differential-pressure-drain versions of the same GFR300 filter regulator are available as separate codes, along with a 5 um element (code W), other gauge scales, and G or NPT threads.
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.