The AirTAC GFR300C15ALJF2K AirTAC Filter Regulator 1/2 in PT 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 See datasheet 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 GFR300C15ALJF2K is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and reduces pressure to the working level in one body. This configuration carries a 1/2 in PT port, an automatic drain (A) that clears collected condensate without manual attention, a 40 um standard filter element, and the embedded square gauge scaled in psi (F2). The L in the code marks the low-pressure regulator type, a reverse/check valve (K) is fitted, and the unit is supplied without a mounting bracket (J). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing); the 300 size uses a polycarbonate bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), an optional 5 um element (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT thread options to order. AirTAC publishes flow as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR300C15ALJF2K AirTAC Filter Regulator 1/2 in PT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding filtered, reduced-pressure air to clamping and holding cylinders on a machining fixture whose actuators are rated below full line pressure, with the psi gauge making set-point checks quick.
Conditioning air for pick-and-place cylinders and diverters along a packaging conveyor, with water and particulate stripped out ahead of the regulation stage and condensate handled automatically.
Delivering clean, reduced-pressure air to spray guns and coating heads where the low-pressure regulator type and a 40 um element keep finish quality consistent.
The real, decodable choices are: step the size and port (200/300/400/600, 1/8 to 1 in) against the air demand of your line; pick the drain type - differential-pressure (default), automatic (this unit) or manual; choose the filter grade, 40 um standard or 5 um with code W; set the gauge scale to MPa, psi or bar; keep the PT thread as standard or order G (BSPP) or NPT; and decide on a mounting bracket (this unit is the J, no-bracket version). This unit is the low-pressure (L) type, so confirm its adjustment range against your set pressure before ordering - the exact low-pressure range is not published in the standard table. Flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering.
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. Send us your line pressure, set pressure and air demand and we will confirm the flow from the datasheet on request.
Code A fits the automatic drain: condensate collected in the bowl is discharged without anyone opening it by hand, unlike the manual drain (code M) or the differential-pressure drain fitted as the default. It suits positions that are hard to reach or lines that run unattended.
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.