The AirTAC GFR300C15ALJF1TK 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 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 AirTAC GFR300C15ALJF1TK is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/2 in NPT port, the standard 40 um filter element, an automatic drain that ejects collected condensate without manual attention, and a metal bowl guard. The regulator is the low-pressure type, and a reverse/check valve is fitted. An embedded square gauge scaled in MPa is included so the set pressure is visible at the unit.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drain, 40 um or 5 um (W) filtration, gauge and scale options, and bracket choices. Rated flow for this series is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300C15ALJF1TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Filter-and-regulate the shop air feeding clamping fixtures on a machining centre: the 40 um element keeps swarf-laden condensate out of the clamp cylinders while the low-pressure regulator holds the clamping circuit at its set pressure.
Mount this 1/2 in unit upstream of a valve manifold on an automated assembly line so water and particulate are stripped out and supply pressure to the valves is set once, with the MPa gauge readable at the machine.
Feed the cylinders and actuators on a cartoning or case-packing machine from a single filter regulator; the automatic drain handles condensate during continuous shifts without an operator opening the bowl.
Size 300 with a 1/2 in port sits in the middle of the GFR range; step up to 400 or 600 or down to 200 depending on the flow your line needs. Drain choice matters: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure is the catalog default. Filtration is 40 um standard; specify W for the 5 um element if downstream valves need finer air. This unit is the low-pressure regulator type, so confirm the adjustment band with us if your setpoint is unusual. Thread here is NPT; PT is the standard and G is also an order option. Bracket is omitted on this configuration. Because flow is published only as curves, 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. 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 number, so we do not quote a figure here. Tell us your application and we will confirm the datasheet flow curve and sizing for this 1/2 in, size 300 unit before you order.
The L code in this configuration marks the low-pressure regulator type rather than the standard one, intended for circuits that operate at lower set pressures. The exact adjustment range for this variant is not published on our sheet, so confirm your setpoint with us and we will verify it against the datasheet.
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.