The AirTAC GFR300C10MLJC2WG 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 GFR300C10MLJC2WG is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This configuration carries a 5 um filter element, drains by hand through its metal bowl, and is the low-pressure regulator type. It comes with an external round gauge scaled in psi, no mounting bracket, and no reverse/check valve, and it takes a G (BSPP) thread on a 3/8 inch port.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus drain, filter-grade, gauge, thread and bracket options, so a matching unit can be specified for most lines. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before you order.
| Model | GFR300C10MLJC2WG 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) |
Feeds the clamping cylinders on a CNC fixture: the 5 um element keeps spool valves clean while the low-pressure regulator holds a gentle, repeatable clamp setting.
Supplies spray guns in an automotive refinish booth, where the 5 um grade and a hand-drained bowl keep water carryover out of the finish and pressure is set low for fine work.
Runs the air cylinders that raise and hold product on a packaging conveyor, with the round psi gauge letting an operator check the setting at a glance during changeover.
Size 300 with a G3/8 port sits mid-range in the GFR line; step down to size 200 or up to 400/600 depending on the air demand of the circuit - we confirm the flow against the published curves before you order. The 5 um element (code W) suits air feeding sensitive valves and instruments; the 40 um standard element is the choice for general shop air. Manual drain means an operator opens the bowl drain during routine checks; choose automatic or differential-pressure drain where the unit is hard to reach. The low-pressure regulator type is selected for circuits that work well below standard pressure ranges - its exact adjustment range is not published, so we confirm it on request. This unit has a round gauge scaled in psi (an embedded square gauge, and MPa or bar scales, are the alternatives), no mounting bracket, and a G (BSPP) thread; PT is the standard thread with G and NPT as order options.
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 working pressure and air demand and we will confirm the sizing from the datasheet before you order.
This unit drains by hand: an operator opens the bowl drain during routine checks. If the filter regulator sits where nobody walks - above a machine or behind guarding - choose the automatic or differential-pressure drain version instead; both are catalogue options in the same size.
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.