The AirTAC GFR30008ALJF1TK AirTAC Low-Pressure 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 GFR30008ALJF1TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body, with no lubricator. It removes water and particulate from compressed air through a 40 um element and regulates downstream pressure in a low-pressure configuration. This unit is built in the 300 size with a 1/4 in NPT port, an automatic drain that expels collected condensate without manual attention, a reverse/check valve fitted, and an embedded square gauge scaled in MPa; no mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, PT as standard thread and G or NPT as order options, with choices of drain type, 40 um or 5 um filtration, gauge style and scale. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR30008ALJF1TK AirTAC Low-Pressure 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 — 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. |
|---|---|
| 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). |
| 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, regulated air to light-duty pneumatic cylinders and clamps on an assembly station, with the automatic drain keeping condensate out of the valve manifold.
Conditions the air feeding grippers, pushers and diverters on a packaging or labeling conveyor, where the low-pressure regulator type holds a gentle, stable supply pressure.
Installed at an air drop serving control and instrument panels, combining water and particulate removal with regulation, and the reverse/check valve helping hold the downstream setting.
Start with the size and port: the 300 size with a 1/4 in NPT port suits lines where the required flow is modest; step up to 400 or 600 if the circuit demands more air. Choose the drain to match access: automatic (as here) suits enclosed or infrequently attended panels, manual suits routine daily checks, and differential-pressure drain is the default. Pick 40 um for general air preparation or the 5 um W option where finer filtration matters. Gauge scale (MPa, psi or bar) and PT versus G/NPT thread are ordered to match your plant standard, and a bracket can be added where panel mounting is needed.
Because flow is published as curves rather than a single rated figure, 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. 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, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow and sizing against the datasheet on request.
The A in the code specifies an automatic drain, which expels collected condensate from the polycarbonate bowl without manual attention. It suits enclosed cabinets or attended-only-occasionally installations; manual and differential-pressure drains are available on other codes in the same series.
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.