The AirTAC GFR300C10LJF2 AirTAC Filter Regulator PT3/8 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 AirTAC GFR300C10LJF2 is a filter regulator: water and particulate removal plus downstream pressure regulation combined in one body, so one unit does the job of a filter and a regulator at the point of use. This size 300 configuration has PT3/8 ports, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and the low-pressure regulator type for circuits that need reduced downstream settings. The embedded square gauge is fitted with a psi scale, and no mounting bracket is included in this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8" to 1", a choice of differential-pressure, automatic or manual drain, a 5 um element option (code W), MPa/psi/bar gauge scales, and G or NPT thread options in place of the PT standard. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10LJF2 AirTAC Filter Regulator PT3/8 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) |
On a CNC fixture line, this unit filters water and chips-laden compressed air and holds a reduced, low-pressure setting for sensitive clamp cylinders, with the psi gauge giving operators a direct readout at the station.
Mounted at an assembly plant's bench drops, it conditions the shop air supply and regulates pressure for hand-held pneumatic tools and small actuators, while the differential-pressure drain keeps condensate moving out without daily manual draining.
Feeding cylinders and diverters on a packaging conveyor, this filter regulator removes moisture and particulate from the supply line and sets the lower operating pressure those actuators need, protected by the 40 um element.
Start with the port step: size 300 at PT3/8 sits mid-range in the GFR line, and stepping up to size 400 or 600 gives larger ports for higher-demand circuits, while size 200 suits compact drops. Choose the drain to match maintenance access: differential-pressure (this unit) needs no operator action, automatic drains continuously, and manual drain is emptied by hand. The 40 um element is the standard grade; specify the 5 um option (code W) where finer particulate capture matters. Gauge scale is selectable as MPa, psi or bar - this code carries the square gauge reading psi. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a mounting bracket can be added if the code requires it.
One honest note before ordering: AirTAC publishes flow for this series as curves, not as a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you commit.
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 performance curves rather than a single rated number, so there is no one l/min or SCFM figure we can honestly quote. Tell us your application and line conditions and we will confirm the relevant datasheet flow figures for this size 300, PT3/8 unit on request before you order.
The L in this code marks the low-pressure regulator type, intended for circuits where the downstream setting must sit below what the standard type is aimed at. The exact adjustment range for this variant is not published in the material we hold, so ask us to confirm it on request. The rest of the decode is unchanged: PT3/8 ports, 40 um element, differential-pressure drain, square psi gauge, no bracket and no reverse/check valve.
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.