The AirTAC GFR30008ALJF1WTK AirTAC Filter Regulator NPT1/4 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 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 GFR30008ALJF1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/4 in NPT port, a 5 um filter element (the finer of the two published grades), and an automatic drain that expels collected condensate without manual attention. The regulator is the low-pressure type, a square pressure gauge scaled in MPa is fitted, and a reverse/check valve is built in. No mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family covers sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options including manual or differential-pressure drains, the 40 um standard element, external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR30008ALJF1WTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 | 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. |
| 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Positioned ahead of clamping cylinders on a machining fixture, this unit strips water and fine particles from the shop air line and holds the reduced, low set pressure the clamp circuit is set up for, with the fitted gauge giving the operator a direct reading.
On a bottling or filling line, the combined filter and regulator conditions the air feeding grippers and small actuators, the 5 um element protecting downstream components, while the automatic drain clears accumulated condensate between shifts without operator attention.
Installed upstream of a packaging machine's valve island, this unit delivers filtered air at the reduced pressure the circuit was designed around; the built-in reverse/check valve helps hold the downstream side if supply pressure at the machine drops.
Size and port: this 300-size unit takes a 1/4 in NPT port; the larger 400 and 600 sizes step up through 3/8, 1/2, 3/4 and 1 in, so move up a size when your air demand outgrows the port. Drain: this unit has an automatic drain; manual and differential-pressure drains are the other catalogue choices if you prefer scheduled or pressure-differential purging. Filtration: the 5 um element (code W) is the finer option against the 40 um standard. Gauge: a square gauge scaled in MPa is fitted; psi and bar scales and an external round gauge are options. Thread: NPT is ordered here, while PT is the standard thread and G is also available. No mounting bracket is included; a bracket is an option. Flow is published as curves, not a single rating, so 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 this family as performance curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and the equipment you are feeding, and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code means an automatic drain: collected condensate is expelled from the PC bowl without anyone opening it, which suits unmanned cells and enclosed machines. The catalogue also offers a manual drain and a differential-pressure drain on this family if you prefer scheduled or pressure-differential purging.
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.