The AirTAC GFR300C10LJF2WG AirTAC Filter Regulator G3/8, 5 um 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 GFR300C10LJF2WG is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is threaded G3/8 (G/BSPP), carries the 5 um filter element (the finer of the two published grades), a metal bowl with differential-pressure drain, and a fitted embedded square gauge scaled in psi. It is the low-pressure regulator type, no reverse/check valve is fitted, and 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 ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um filtration, standard or low-pressure regulation, embedded square or optional external round gauges with MPa, psi or bar scales, and PT, G or NPT threads (PT is the standard; G and NPT are order options). Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C10LJF2WG AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| 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) |
Clean, regulated air to the press cylinder circuit on a light-duty stamping or forming press, where the 5 um element protects the directional valve and the low-pressure regulator holds the setting the tooling was set up with.
Point-of-use air prep for gripper and pusher actuators on a bottling or packaging conveyor, with the psi-scaled square gauge giving operators a visible setpoint at the machine and the differential-pressure drain keeping the bowl clear during runs.
Filtered, regulated air feeding pilot valves and I/P components on a process skid or control panel, where the low-pressure regulator type matches circuits that run at modest settings and the compact single-body GFR format saves panel space.
Step through the decodable choices before ordering. Size 300 with a G3/8 port suits lines plumbed at 3/8 in; step up to size 400 or 600, or down to 200, if your piping and flow demand differ. The 5 um element (code W) is the finer option against the 40 um standard - pick it when downstream valves and cylinders need cleaner air. Drain here is differential-pressure (bowl drains as the pressure differential rises); automatic or manual drains are available on other codes if you prefer. The fitted square gauge reads in psi; round gauges and MPa or bar scales exist as options. This is the low-pressure regulator type - the exact adjustment range for the low-pressure version is not published, so confirm it with us. Thread is G (BSPP); PT is the catalogue standard and NPT is an order option. No bracket is included with this code.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the sizing against the datasheet curves before you order.
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 family as curves, not as a single rated figure, so we do not quote a flow number on the page. Tell us your upstream pressure and the flow your application needs, and we will confirm the sizing for this exact model against the datasheet curves on request before you order.
L sets the low-pressure regulator type - the exact adjustment range for the low-pressure version is not published, so confirm it with us if your setpoint is critical. W sets the 5 um filter element instead of the 40 um standard, giving finer particulate removal for sensitive downstream components. The rest of this code fixes a G3/8 thread, differential-pressure drain, square psi gauge, no reverse valve and no bracket.
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.