The AirTAC GFR30010ALJNWTK AirTAC Filter Regulator NPT3/8 is a genuine G-series filter regulator: water separation, 5 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 GFR30010ALJNWTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has 3/8 in NPT ports, a 5 um filter element (the finer of the two published grades), an automatic drain that discharges collected condensate without manual attention, and the low-pressure regulator type for circuits that run below standard line pressure. A reverse/check valve is fitted, no gauge is supplied and no mounting bracket is included. The polycarbonate bowl suits the family's -5 to 70 C (non-freezing) operating range, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR300 series is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, plus choices of drain type, filter grade, gauge, thread form and bracket. AirTAC publishes flow only as curves rather than a single rated figure, so we confirm flow and full datasheet details for your application on request.
| Model | GFR30010ALJNWTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Supplying filtered, reduced-pressure air to directional control valves and small actuators on packaging and assembly machinery that runs below standard line pressure.
Feeding low-pressure cylinders on conveyor diverters, stoppers and lifters, with the 5 um element protecting seals from water and fine particulate.
Regulating supply to air knives and blow-off nozzles on cleaning and drying stations, with the automatic drain keeping condensate out of the nozzle air.
Size and port step up with air demand: this unit is size 300 with 3/8 in NPT ports, sitting between the smaller 200 size and the larger 400/600 sizes. The real choices in this family are the drain (differential-pressure standard, automatic as fitted here, or manual), the filter grade (40 um standard, 5 um as fitted here), the gauge (none on this code; embedded square or external round with MPa, psi or bar scale when wanted), the thread (PT is the standard, with G and NPT as order options) and the bracket (not included on this J-suffix code). The low-pressure regulator type is chosen when the circuit runs below the standard regulator range; its exact adjustment range is not published, so ask us to confirm it. Because flow is published as curves and not a single rating, send us your application conditions and we will confirm sizing 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 as curves rather than a single rated figure, so there is no one number we can honestly quote. Send us your line pressure, downstream pressure and expected air demand and we will confirm the sizing from the datasheet on request.
The L in the code marks the low-pressure regulator type, intended for circuits that run below the range of the standard regulator. The exact adjustment range for this low-pressure version is not published in the data we hold, so we confirm it on request. The rest of the code decodes normally: NPT3/8 ports, 5 um element, automatic drain, reverse/check valve fitted, no gauge and no bracket.
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.