The AirTAC GFR300C08MLF2T AirTAC Filter Regulator 1/4 in NPT 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 GFR300C08MLF2T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the 300 size with a 1/4 in NPT port, a manual drain bowl in metal, the standard 40 um filter element, and the low-pressure regulator type. A square pressure gauge scaled in psi is fitted, and a mounting bracket is included. Max 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 GFR300 series is one of four sizes (200/300/400/600), with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, manual, automatic or differential-pressure drains, a 5 um element option (code W), and gauge scale choices. Because flow is published as curves rather than a single rated figure, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08MLF2T AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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) |
On a carton-sealing or case-packing conveyor, this unit filters the shop air and holds a steady, lower regulated pressure to the cylinder circuit, with the manual drain emptied during scheduled line checks.
In a paint or coating booth feed, the 40 um element strips water and particulate ahead of the gun circuit while the low-pressure regulator type sets the gentle working pressure the process calls for.
At an assembly station with small pneumatic grippers or clamps, this 1/4 in NPT unit conditions the drop and regulates the circuit, with the fitted psi gauge giving the operator a direct pressure readout.
Size and port step up together: 200, 300, 400 and 600 cover 1/8 in through 1 in, so pick the step that matches your line's air demand and existing piping - here that is 300 at 1/4 in NPT. The drain choice matters in service: manual drain means an operator opens the bowl drain at intervals, while automatic and differential-pressure drains discharge condensate without that routine; this unit is manual. The 40 um element is the standard grade; choose the 5 um option (code W) where finer particulate removal is needed. The fitted square gauge reads in psi, with MPa or bar scales available, and an external round gauge is optional. PT is the standard thread; G and NPT are catalogue options you order explicitly.
Because flow is published only as curves and not as a single rating, ask us to confirm sizing against your application before ordering. The low-pressure regulator type on this unit is selected where the controlled pressure sits in the lower band; we confirm the exact range from the datasheet on request.
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 this series as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and operating conditions and we will confirm the sizing against the datasheet on request.
The M in the code selects the manual drain: condensate collecting in the metal bowl is released by opening the drain when servicing. If you would rather not run that routine, the same series is orderable with an automatic or differential-pressure drain - just ask for the alternative code.
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.