The AirTAC GFR300C10MLF2G 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 GFR300C10MLF2G is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This unit is built on a G3/8 (BSPP) port, is the low-pressure regulator type, and carries the standard 40 um filter element. Water collected in the metal bowl is emptied with the manual drain, so the drain should be operated as part of routine maintenance. A square pressure gauge reading in psi is fitted, a mounting bracket is included, and no reverse (check) valve is fitted.
This is a genuine AirTAC part. The GFR family is made in sizes 200, 300, 400 and 600, with a choice of port and thread (PT is the standard thread; G and NPT are order options), drain type, filter grade (40 um standard, 5 um with code W), gauge style and scale. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Because flow is published as curves rather than a single rated figure, ask us to confirm sizing and any datasheet figure for your application.
| Model | GFR300C10MLF2G 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) |
Filtered, regulated air to clamping cylinders on an assembly fixture where the circuit runs below standard regulator settings; the manual drain suits a drop that is purged and checked at shift start.
Clean, regulated air for actuated gates and sealing cylinders on a packaging line, with the fitted square psi gauge giving operators a local setpoint readout at the machine.
Point-of-use conditioning on a lab test bench, where the 40 um element helps keep pipe scale and water out of instruments, and the included bracket fixes the unit to the bench frame.
Size 300 sits in the middle of the GFR range (200, 300, 400, 600); step up or down a size when the port or the air demand of the line changes, and match the port to your piping - here G3/8 with G (BSPP) thread, while PT is the standard thread and NPT can be ordered. Choose the drain to suit access: this unit has a manual drain, which suits points an operator visits routinely, while automatic and differential-pressure drains suit less accessible drops. The filter grade here is the standard 40 um; specify code W for the 5 um element where finer particulate matters. The fitted square gauge reads in psi; MPa or bar scales are available, and an external round gauge is optional. Because this is the low-pressure regulator type, confirm the set-pressure range and the flow curve against your application with us before ordering - flow is published as curves, not a single rating.
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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and the air demand of the equipment, and we will confirm the sizing against the datasheet before you order.
The M in the code specifies a manual drain: collected water is released by hand, which suits drops that are checked routinely. Automatic and differential-pressure drains are catalogue options on the GFR family if you would rather not rely on operator draining. This unit also runs the standard 40 um element; code W gives the 5 um grade, and the gauge can be ordered with an MPa or bar scale instead of psi.
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.