The AirTAC GFR300C10MLC2 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 GFR300C10MLC2 is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure, combined in one body. This 300-size unit is ported PT3/8 (3/8 in, PT thread as standard; G and NPT are order options), carries the low-pressure regulator type, the 40 um standard filter element and a manual drain. A round gauge with a psi scale is fitted, the mounting bracket is included, and the bowl is protected by a metal bowl guard. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
It is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (code W) filtration, gauge and thread options, and a reverse/check valve variant. Flow is published as curves rather than a single rated figure, so we confirm datasheet figures on request.
| Model | GFR300C10MLC2 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) |
Supplies filtered, regulated air to the fixture clamps that hold workpieces on a CNC milling line, with the manual drain opened at shift start to clear collected water.
Feeds the sealing and cutting cylinders of a bagging line, where the 40 um element keeps water and debris out of the machine's valves and the psi gauge gives a quick line check.
Provides clean, regulated pilot air to diaphragm control valves on a water-treatment skid, with the round gauge read at a glance during routine rounds.
Size and port step up together: 200, 300, 400 and 600 map to ports from 1/8 to 1 inch, so choose the step that matches the air your downstream circuit actually uses. This unit is the low-pressure regulator type rather than the standard type, and the exact adjustment range for that variant is not published in our sheet, so confirm the set-pressure window with us before ordering. The drain here is manual, meaning you open it by hand to purge collected water instead of relying on the differential-pressure (default) or automatic drain options. Filtration is the 40 um standard element; the 5 um (code W) element is available where finer air is needed. The fitted round gauge reads psi; the embedded square gauge and MPa or bar scales are the other catalogue choices. Thread is PT as standard, with G (BSPP) and NPT as order options, and the bracket is included.
Because flow for this series is published as curves, not as a single rating, ask us to confirm sizing against your application before ordering.
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 GFR300 series as curves, not as a single rated number, so we do not quote a figure here. Ask us to confirm the flow from the datasheet against your application before ordering.
This unit is the low-pressure regulator type rather than the standard type, and the exact adjustment range for that variant is not published in the sheet we work from, so we confirm it on request. The manual drain means you open it by hand to purge collected water, unlike the differential-pressure (default) or automatic drain options in the same family.
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.