The AirTAC GFR300C10MLJF2GK AirTAC Filter Regulator G3/8 Low-Pressure 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 GFR300C10MLJF2GK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit has a G3/8 (BSPP) port, a metal bowl with manual drain, the standard 40 um filter element, and the low-pressure regulator type for installations that work at reduced set pressures. The embedded square gauge on the psi scale is fitted, a reverse/check valve is included, and the unit is supplied without a mounting bracket. The exact low-pressure adjustment range is not published in the standard tables, so confirm it with us on request.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, an optional 5 um element (code W), gauge scale options in MPa, psi or bar, and G or NPT thread alternatives to the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10MLJF2GK AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| 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) |
Feeds clamp cylinders on a CNC fixture line where the air must be filtered and held at a reduced working pressure; the low-pressure type and the fitted psi gauge suit set-and-check operation at the start of each shift.
Supplies filtered, regulated air to sealing jaws and hold-down cylinders on a carton line; the manual-drain metal bowl is emptied by the operator during scheduled changeover stops.
Provides cleaned, reduced-pressure air to blow-off nozzles that clear dust and chips from parts moving along a conveyor, with the fitted reverse/check valve included for lines that want backflow protection.
Within the GFR line, size and port set the flow path: this unit is size 300 with a G3/8 port. Step up or down a size if your circuit needs a larger or smaller port, and ask us to check the published flow curves against your air demand before ordering. Drain type is a real choice: the manual drain fitted here is emptied by hand at intervals you set, while automatic and differential-pressure drains are available on other variants of the same size. The 40 um element is standard; specify code W if you need the 5 um grade. The square gauge is fitted here on the psi scale; an external round gauge is optional, with MPa, psi or bar scales. Thread is G on this unit, with PT as the standard and NPT orderable as a catalogue option. No mounting bracket is included with the J code. Because flow is published as curves and not a single rating, send us your line conditions and we will confirm sizing against 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 the GFR series as curves rather than a single rated number, so we do not quote a figure here. Send us your line pressure and air demand and we will confirm sizing against the datasheet curves on request.
The M in the code sets a manual drain: the metal bowl is emptied by hand at intervals you set during maintenance. The same GFR300 size is also offered with automatic or differential-pressure drains - tell us which suits the installation and we will identify the matching 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.