The AirTAC GFR30008ALJC1WTK AirTAC Filter Regulator NPT1/4 5 um 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 GFR30008ALJC1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. Compressed air passes a 5 um filter element (code W) and then feeds a low-pressure regulator variant (code L); the exact adjustment range for the low-pressure type is not published, and we confirm it on request. The automatic drain (code A) removes collected condensate from the PC bowl without manual attention, a reverse/check valve (code K) is fitted, and a round pressure gauge on the MPa scale is included. Connection is a 1/4 in NPT port, and this configuration is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR series is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, gauge style and scale options, and PT, G or NPT threads. 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 the datasheet figures for your application.
| Model | GFR30008ALJC1WTK AirTAC Filter Regulator NPT1/4 5 um |
|---|---|
| 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 — round, 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). |
| C | Gauge shape: Round. 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) |
On a robotic welding cell, weld-clamp actuators need air stripped of water and swarf and held at a steady low set pressure. The 5 um element protects the clamp valves ahead of the regulator, the automatic drain clears condensate between shifts without an operator, and the check valve sits in the supply path.
Bottling and filling lines run grippers, pushers and guide cylinders on regulated air. This unit filters the plant supply to 5 um, regulates it with the low-pressure type regulator, and the round MPa gauge lets a line operator read the set point at a glance during changeover.
On a laboratory or quality-control test bench, instrument air must be clean and held at low, stable pressure for small cylinders and test fixtures. The 5 um element handles fine particulate, the low-pressure regulator suits modest set points, and the MPa gauge confirms the setting directly.
The real, decodable choices on this series are: size and port (200/300/400/600, 1/8 to 1 in) stepped against the flow your line needs; drain type - differential-pressure (default), automatic as fitted here, or manual; filter grade - 40 um standard or 5 um with the W code as on this unit; gauge style and scale - embedded square as standard or external round, on MPa, psi or bar scales, with a round MPa gauge on this model; thread - PT is the standard, with G and NPT as catalogue options (NPT here); and the optional mounting bracket, which this configuration omits. Because flow is published as curves rather than a single rated figure, send us your application and we will confirm sizing against the datasheet 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 GFR flow as curves rather than a single rated figure, so we do not quote a number here. Send us your application and we will confirm the datasheet flow curve and check the sizing of the 300 size with its 1/4 in NPT port against what your equipment needs before you order.
W is the 5 um filter grade, a finer element than the 40 um standard fitted to the default version of this unit. It removes finer particulate from the air ahead of the regulator, which suits sensitive downstream valves and instruments. If your line only needs general protection, the 40 um standard version of the same GFR300 unit is also available.
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.