The AirTAC GFR30010ALJC1T AirTAC Filter Regulator NPT3/8, 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 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 GFR30010ALJC1T is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air down to 40 um and regulates downstream pressure, with no lubricator in this family. This configuration is the size 300 unit with NPT3/8 (3/8 in) ports, an automatic drain that ejects collected condensate without manual attention, the standard 40 um filter element, the low-pressure regulator type, and a round pressure gauge with MPa scale fitted. The polycarbonate bowl is rated for a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT threads, differential-pressure, automatic or manual drains, a 5 um (code W) filter element option, gauge styles and scales, and bracket options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR30010ALJC1T AirTAC Filter Regulator NPT3/8, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Filtering and regulating the air feeding spray guns so water and particulate are stripped out and gun pressure is set at a low, stable value for consistent finish work.
Conditioning the supply to carton sealers and wrapper cylinders: clean air into the valve stack and a controlled low-pressure setting for gentle clamping and forming.
Preparing air for workholding clamps and tool-change cylinders on a CNC cell, where the low-pressure regulator type holds a reduced set pressure and the automatic drain keeps condensate out of the circuit.
Choose the size by the port step and the flow your line needs: this is size 300 with NPT3/8 ports; smaller or larger sizes step the port and the flow capacity accordingly. The automatic drain suits unattended duty where condensate should be ejected without operator input; manual and differential-pressure drains are alternatives in the family. The standard element is 40 um; specify the W code for 5 um where finer filtration is needed. This unit is the low-pressure regulator type - its exact adjustment range is not published in the catalogue, so confirm it against your set pressure before ordering. The round MPa gauge is fitted here; square embedded gauges and psi or bar scales are options. NPT is the thread on this unit; PT and G are the other order options, and brackets are optional (not included on this code).
Because flow is published as curves rather than a single rating, 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not state a flow number. Tell us your application and line pressure and we will confirm the sizing from the datasheet on request.
This unit carries the L code, meaning it is the low-pressure regulator type rather than the standard type. Its exact adjustment range is not published in the catalogue, so confirm your set pressure with us before ordering. Everything else about the configuration - NPT3/8 ports, automatic drain, 40 um element, round MPa gauge - is unchanged.
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.