The AirTAC GFR30015ALJC2TK AirTAC Filter Regulator NPT1/2 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 PT1/2" 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 AirTAC GFR30015ALJC2TK is a 300-size filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built for a 1/2 in NPT port, uses the standard 40 um filter element, and carries an automatic drain, so condensate is expelled from the PC bowl without anyone having to open it by hand. It is the low-pressure (L) type, suited to circuits that run below standard regulator settings, and it ships configured with a round external gauge reading in psi. A reverse/check valve (K) is fitted, and the unit comes without a mounting bracket (J code).
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in and PT, G or NPT threads. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30015ALJC2TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (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, psi 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| 2 | Gauge scale: psi. 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
On a fixture-clamping loop in a machining cell that runs below standard regulator settings, this low-pressure-type filter regulator conditions the supply and holds the set pressure, with the psi gauge giving the operator a direct readout at the station.
Feeding cylinders and actuators along a carton-sealing or wrapping conveyor, this 1/2 in NPT unit strips water and particulate ahead of the valves, and the automatic drain keeps the PC bowl clear on a line that runs without an operator standing by.
On a test bench or lab air drop where instruments need clean, regulated air at moderate pressures, the 40 um element and low-pressure regulation protect downstream gear, and the check valve (K) holds the setting if supply pressure dips.
Start with the port step: this unit is 1/2 in NPT, one of the larger sizes in the G-series range, so match it to line size and required flow - moving up a size (400) or down (200) changes both. Drain choice matters in practice: automatic drain suits unattended or hard-to-reach installations, manual drain suits supervised points, and the differential-pressure default is the catalogue standard. Filter grade is 40 um as coded here; specify W for the 5 um element where finer filtration is needed. Gauge options are an embedded square gauge or an external round gauge in MPa, psi or bar scales - this unit is coded for the round psi gauge. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable. Bracket: the J code means no bracket is included.
One honest note before ordering: flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you commit.
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 GFR300 series as curves, not as a single rated number, so there is no honest one-line figure we can quote. Send us your line pressure, downstream demand and port arrangement, and we will confirm the relevant datasheet curve for this 1/2 in NPT unit on request before you order.
The L in the code marks this as the low-pressure regulator type, intended for circuits that run below standard regulator settings; the exact adjustment range for the low-pressure type is not published in our sheet, so ask us to confirm it. The A code is the automatic drain: condensate collected in the PC bowl is expelled without manual intervention, which suits unattended installations. The standard 40 um element is fitted here; specify W for the 5 um grade.
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.