The AirTAC GFR30008ALJC2TK AirTAC Filter Regulator NPT1/4 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 GFR30008ALJC2TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure in a low-pressure configuration. This unit is built with a 1/4 in NPT port, an automatic drain that expels collected condensate without manual intervention, a round external gauge reading in psi, and a reverse/check valve fitted. It is supplied without a mounting bracket. The exact adjustment range for the low-pressure type is not published in our data, so treat it as a low-pressure circuit component and confirm the range with us before ordering.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, drain choices of differential-pressure, automatic or manual, a 5 um (code W) filter-grade option, gauge and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures against your application.
| Model | GFR30008ALJC2TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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, 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. |
|---|---|
| 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. |
| 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On an assembly line where pneumatic clamps and hold-downs run at reduced circuit pressure, this filter regulator cleans the supply of water and particulate and holds the set pressure to the clamp cylinders, with the check valve helping hold the downstream side.
On a packaging line, low-pressure air actuates diverters, pushers and gate cylinders. This unit filters the shop air and regulates it to the circuit pressure those actuators need, while the automatic drain keeps condensate out of the valves below.
On a laboratory or QC test bench running low-pressure pneumatic tests, this unit filters the incoming compressed air and regulates it to the test pressure, with the psi gauge giving a direct local reading at the bench.
Start with the port step: the GFR300 carries a 1/4 in port, and moving to size 400 or 600 increases both port and flow capacity, while size 200 steps down. Because flow is published as curves and not as a single rating, ask us to confirm sizing against your required flow before ordering. The automatic drain on this unit suits unattended installations where condensate should be expelled without operator attention; manual and differential-pressure drains are available on other variants. The standard 40 um element covers general-purpose air preparation, and a 5 um element (code W) is available when finer filtration is needed. The round external gauge on this unit reads in psi; embedded square gauges and MPa, psi or bar scales are the other catalogue options. Thread is NPT here; PT is the standard catalogue thread and G (BSPP) is also an order option. This variant omits the mounting bracket; bracketed versions exist in the family.
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 GFR series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your required flow and operating pressure and we will confirm sizing from the datasheet curves on request before you order.
The A position is the drain: automatic means collected condensate is expelled without manual attention, unlike the manual (M) or differential-pressure (blank) drain options. The K means a reverse/check valve is fitted, so air is blocked from flowing back upstream through the unit.
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.