The AirTAC GFR30010ALJF1TK AirTAC Filter Regulator NPT 3/8 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 GFR30010ALJF1TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is the 300 size with NPT 3/8 ports, an automatic drain that bleeds condensate from the PC (polycarbonate) bowl without manual attention, a 40 um standard filter element, and the low-pressure regulator type for duties that sit at the lower end of the adjustment span. An embedded square gauge scaled in MPa is fitted, and the K code adds a reverse/check valve so downstream pressure is held if the supply drops.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, a 5 um element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads (PT is the standard; G and NPT are ordered as options). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR30010ALJF1TK AirTAC Filter Regulator NPT 3/8 Low-Pressure |
|---|---|
| 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 — square, MPa 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. |
| 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. |
| 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) |
Filtered, regulated air feeding pneumatic clamps and swing cylinders on a CNC fixture line, where the low-pressure type holds a modest set pressure and the check valve keeps clamps engaged if the main supply dips.
Air preparation for the divert and pusher cylinders on a packaging conveyor: the 40 um element stops particulate reaching valve spools, the automatic drain keeps condensate out of the line, and the MPa gauge gives operators a set-point reference.
Supplying filtered, regulated air to spray nozzles or air knives on a finishing or coating line that runs at low regulated pressure, with the automatic drain handling moisture before it reaches the nozzle tips.
Work from the port step first: the 300 size with 3/8 in NPT ports sits in the middle of the 200/300/400/600 range, so step up or down a size if your line's flow demand points elsewhere - and ask us to check the flow curve against your consumption before ordering, since AirTAC publishes flow as curves, not a single rating. The remaining choices are all decodable from the code: automatic drain here versus manual or differential-pressure on other variants; 40 um standard filtration versus 5 um (code W) where finer particulate control matters; square gauge in MPa here, with psi or bar scales and an external round gauge available; and PT as the standard thread with G and NPT ordered as options. This unit is the low-pressure regulator type with no mounting bracket; confirm the exact adjustment range for the L variant with us before you fix a set pressure.
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 G-series flow as curves, not a single rated figure, so we do not quote a number here. Send us your application's flow and pressure requirements and we will confirm the correct size and port from the datasheet before you order.
The L code specifies the low-pressure regulator variant, intended for duties with lower set pressures than the standard type. The exact adjustment range for this variant is not published in the material we hold, so confirm the range with us against your set point before ordering.
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.