The AirTAC GFR300C08LJF2TK AirTAC Filter Regulator NPT1/4 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 GFR300C08LJF2TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, for compressed air only. This configuration is built around a 1/4 in NPT port, carries a 40 um element that strips water and particulate from the air stream, and regulates downstream pressure as the low-pressure type. Condensate is handled by the differential-pressure drain (the series default), the bowl is metal, an embedded square gauge reads the downstream setting in psi, and a built-in check valve (code K) is fitted for reverse flow. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 in and PT, G (BSPP) or NPT threads; drain types (differential-pressure, automatic or manual), a finer 5 um element (code W), gauge scales in MPa, psi or bar, and bracket options are selectable across the range. Flow for GFR units is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before you order.
| Model | GFR300C08LJF2TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeding filtered, low-pressure regulated air to the gripper and capper cylinders on a beverage bottling line, where the 40 um element protects the actuators and the built-in check valve accommodates reverse flow in the circuit.
Supplying quarter-turn pneumatic ball and butterfly valve actuators in a water-treatment plant, where the low-pressure regulator holds a stable set pressure to the actuator and the NPT1/4 port matches the supply connection.
Running the diverter and stopper cylinders on a parcel-sortation conveyor, where combined filtration and regulation in one body saves panel space and the square psi gauge lets technicians verify the set point at a glance.
The real choices in this family are the size and port step, the drain type, the filter grade, the gauge and the thread. Step up from 200 through 600 as your air demand grows; each size carries its own port range, and this unit sits at size 300 with a 1/4 in NPT port. Choose the differential-pressure drain (as fitted here) for standard duty, automatic where you cannot rely on manual draining, or manual where you want positive control. The 40 um element is standard; specify code W for 5 um when downstream equipment needs finer filtration. Gauge scales are available in MPa, psi or bar - this unit is fitted with the square gauge reading psi - and PT is the standard thread with G (BSPP) and NPT as order options. This code is the low-pressure regulator type without a mounting bracket; its exact regulation range is not published, so confirm it with us against your set pressure. Because flow is published as curves rather than a single rating, ask us to check the curve 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 GFR flow as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure and the air demand of your equipment and we will confirm the flow from the datasheet and check the sizing against your application before you order.
This code is the low-pressure (L) regulator type, and the exact adjustment range for that variant is not published on the data we hold. The unit's maximum inlet pressure is 1.0 MPa (145 psi). Tell us the downstream pressure you need and we will confirm the range from the AirTAC datasheet on request.
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.