The AirTAC GFR30015LJC3WT AirTAC Low-Pressure Filter Regulator NPT1/2 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 PT1/2" ports, a differential-pressure 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 AirTAC GFR30015LJC3WT is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for 1/2 in NPT ports, carries the fine 5 um filter element (code W) instead of the standard 40 um, and is the low-pressure type for circuits that run at reduced working pressure. It drains condensate by differential pressure, has no mounting bracket, and is fitted with an external round gauge reading in bar. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of ports, thread options (PT standard, G and NPT to order), drain types, filter grades, gauge styles and scales, and standard or low-pressure regulation. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR30015LJC3WT AirTAC Low-Pressure Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Not fitted |
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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure 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. |
| 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. |
| (blank) | No reverse-flow valve (the default). |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Filtering and regulating the air feeding pneumatic cylinders on a carton-forming and sealing conveyor, where the low-pressure type keeps actuation circuits at reduced working pressure and the 5 um element protects valve spools from particulate.
Conditioning shop compressed air at a lab bench drop that serves air-operated sample valves and small fixtures, with fine 5 um filtration ahead of sensitive equipment and a bar-scale gauge for straightforward set-and-check adjustment.
Supplying filtered, regulated air to the pneumatic actuated valves on a beverage bottling line, where the differential-pressure drain carries off condensate during production and the single-body filter regulator saves panel space at the 1/2 in take-off.
Choose the size and port step (200 through 600, ports 1/8 in to 1 in) against the air demand of your circuit, then confirm the match with us, since flow is published as curves rather than a single rated figure. For this unit the relevant choices are already fixed: 300 size with 1/2 in NPT thread, the 5 um fine element where cleaner air matters, differential-pressure drain, a round bar-scale gauge, and the low-pressure regulator type. If you need a different thread (PT standard, G optional), a manual or automatic drain, the 40 um standard element, a square embedded gauge with MPa/psi/bar scale, or a mounting bracket, those exist elsewhere in the GFR range. Send us your application conditions and we will confirm the right part and its figures before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR flow as performance curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure for this unit. Tell us your application conditions and we will confirm the sizing against the datasheet curves on request before you order.
The L in the code marks this as the low-pressure regulator type, intended for circuits that run at reduced working pressure; the exact adjustment range for the low-pressure version is not published, so we confirm it on request. The W in the code is the 5 um fine filter element instead of the 40 um standard, chosen where downstream equipment needs cleaner air. Drain on this unit is differential-pressure.
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.