The AirTAC GFR300C08MLF1TK 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 GFR300C08MLF1TK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This size 300 unit has a 1/4 in NPT port, a manual drain that an operator opens by hand to empty the metal bowl, a 40 um filter element, and the low-pressure regulator type, whose exact adjustment range is not published - ask us to confirm it for your circuit. A square pressure gauge on the MPa scale is fitted, a reverse/check valve is included, a mounting bracket comes with the unit, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options including automatic or differential-pressure drains, a 5 um element (code W), external round gauges with MPa, psi or bar scales, and G (BSPP) or NPT threads in place of the PT standard. Rated flow for this unit is published as a curve rather than a single figure, so we confirm the datasheet and sizing on request.
| Model | GFR300C08MLF1TK 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) |
Filtering and regulating supply to clamp cylinders on a fixture line that runs at reduced pressure, where the low-pressure regulator type and a manual drain suit supervised operation.
Conditioning air ahead of tool-change cylinders and air gates on a machining centre, with the fitted square MPa gauge giving the operator a local pressure readout at the set-point.
Supplying filtered, regulated air to diverters and pushers on a packaging conveyor, with the fitted reverse/check valve blocking backflow from the downstream circuit.
Step up through the GFR sizes (200, 300, 400, 600) as your port and flow demand grows; this unit is size 300 with a 1/4 in NPT port. Choose the drain to suit maintenance: manual (this unit) means an operator empties the bowl by hand, while automatic and differential-pressure drains discharge condensate without attention. The 40 um element is standard; specify code W for a 5 um element where finer filtration is needed. Gauges can be ordered with MPa, psi or bar scales, and threads are available in PT (the standard), G (BSPP) or NPT (this unit). Because rated flow is published only as curves, not a single number, 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 figure, so we do not quote a number here. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The M in the code specifies a manual drain: condensate collected in the metal bowl is released by operating the drain by hand as part of routine checks. If you prefer unattended condensate removal, GFR units can be ordered with an automatic or differential-pressure drain instead.
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.