The AirTAC GFR30008ALJC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure 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 GFR30008ALJC3TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure. This configuration is the low-pressure type, sized for 1/4 in NPT piping, with an automatic drain that expels collected condensate without manual attention, a reverse/check valve fitted, and an external round pressure gauge reading in bar. The polycarbonate bowl lets you see the condensate level, and no mounting bracket is included.
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, a choice of differential-pressure, automatic or manual drains, a 5 um (code W) filter element option, gauge styles and scales, and PT, G or NPT threads. Published flow data appears as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008ALJC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| 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, bar 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. |
| 3 | Gauge scale: bar. 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) |
A clamp cylinder circuit fed at reduced pressure still needs clean, dry air. This filter regulator conditions the supply line and holds the set pressure, with the automatic drain clearing condensate between shifts.
Carton sealers and wrapper take-offs run continuously and cannot wait for a manual bowl purge. The automatic drain and check valve keep the 1/4 in supply line conditioned without operator rounds.
Auxiliary actuation such as part blow-off or chip ejection often runs at low set pressures. This low-pressure type regulator lets operators dial in the reduced setting while the 40 um element protects the downstream fittings.
Pick the GFR300 size step for 1/4 in piping, stepping up to GFR400/600 or down to GFR200 as your line size and air demand change. This unit already carries the automatic drain, which suits unattended duty; choose manual drain where you prefer a deliberate purge, or differential-pressure drain as the catalogue default. The standard 40 um element covers general air preparation; specify the 5 um W-code element where finer filtration is needed. As a low-pressure type, this regulator is intended for circuits set below the standard unit's range. The round gauge reads in bar; square embedded gauges with MPa, psi or bar scales are the catalogue alternative. Thread here is NPT; PT and G are order options. No bracket is fitted, so plan your own mounting.
Flow for GFR units is published as curves, not a single rating, so send us your application details 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 data as curves rather than a single rated figure, so we do not quote a number. Tell us your line size and air demand and we will confirm the flow from the datasheet for this exact model before you order.
The A in this model code fits the automatic drain, which discharges accumulated condensate from the polycarbonate bowl by itself. It suits unattended or continuous-duty installations; manual and differential-pressure drains are the catalogue alternatives on other GFR variants.
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.