The AirTAC GFR300-15ALJC2T 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 GFR300-15ALJC2T 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 with 1/2 in NPT ports, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, and a round pressure gauge reading in psi. As a low-pressure type unit, it is intended for circuits that run at reduced working pressures; the exact adjustment range for this variant is confirmed on request. 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 family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with a choice of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale, thread form (PT standard, G and NPT as options) and bracket fitting. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300-15ALJC2T 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 | 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". |
| 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. |
| (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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding clean, pressure-controlled air to the cylinders and actuators on a carton-sealing or wrapping line, with the automatic drain keeping condensate out of the supply between shifts.
Regulating supply pressure to pneumatic gate, divert and stop cylinders along a conveyor system, where the 1/2 in ports suit a main drop line feeding several stations.
Providing filtered, low-pressure regulated air to bench-mounted test rigs and pilot devices, with the psi gauge giving a direct local reading for setup and verification.
Start with the size and port: this 300-size unit carries 1/2 in NPT ports, one step up from the 1/4 in and 3/8 in ports of smaller frames, so match the frame to the pipe run and the air demand of the circuit. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Next, choose the drain: this unit has an automatic drain, which suits installations that are not checked daily; differential-pressure and manual drains are available on other codes. The 40 um element is the standard grade; a 5 um element (code W) is available where finer filtration is needed. The round gauge fitted here reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is NPT on this code, with PT as the catalogue standard and G (BSPP) as an option. This code also omits the mounting bracket (code J); bracketed versions are available. The low-pressure type designation means the regulator is built for reduced working pressures - confirm the exact range with us.
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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and air demand and we will confirm the flow and datasheet figures for this exact model on request.
The A in the code selects the automatic drain: collected condensate is expelled from the PC bowl without anyone opening it, which suits installations that are not checked daily. The L in the code marks the low-pressure regulator type, built for reduced working pressures; the exact adjustment range for this variant is not published in the standard table, so confirm it with us before ordering.
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.