The AirTAC GFR300-15LJF1TK 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 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 GFR300-15LJF1TK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one compact body. This configuration has 1/2 in NPT ports, a 40 um filter element, a differential-pressure drain, low-pressure regulation for circuits that run below standard line pressure, an embedded square gauge scaled in MPa, and a built-in reverse (check) valve. No mounting bracket is fitted, so plan your own panel or frame fixing.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 to 1 in, manual, automatic or differential-pressure drains, a 5 um element option (code W), gauge and scale choices, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300-15LJF1TK 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa 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". |
| (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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Pneumatic clamps and swing cylinders on a CNC fixture often hold best at a reduced set pressure. This unit filters the shop air to 40 um and regulates it down on the clamp circuit, with the square gauge giving a clear MPa reading at the cell.
Carton sealers, labellers and case packers on a packaging conveyor need clean, steady low-pressure air for their cylinders and vacuum-assist valves. A filter regulator at each line drop keeps water and debris out of the actuators and holds the set pressure through shift-long cycling.
Quarter-turn pneumatic actuators on a treatment-plant valve manifold typically run on filtered air at reduced pressure. This unit conditions the supply line to the manifold, and the fitted reverse valve helps the set pressure hold on the actuator side of the station.
Size the unit by port and expected flow: this 300-size body carries 1/2 in NPT threads, and stepping up or down a size changes both port and flow capacity. The 40 um element is the standard grade; specify code W for 5 um where finer filtration is needed. Drain options are differential-pressure (fitted here), automatic or manual. The embedded square gauge reads in MPa; an external round gauge and psi or bar scales are order options. Threads come as PT (standard), G or NPT - this unit is ordered with NPT. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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.
Flow for the GFR300 series is published as curves, not as a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm the datasheet figures and check the sizing for you before you order.
L marks the low-pressure regulator type, intended for circuits that run below standard line pressure. K means a reverse (check) valve is fitted. The trailing T sets NPT threads, and F1 is the embedded square gauge scaled in MPa.
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.