The AirTAC GFR300C10MLJF2W AirTAC Filter Regulator PT3/8, 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 GFR300C10MLJF2W is an AirTAC GFR300 filter regulator: water and particulate removal plus pressure regulation combined in a single body. Compressed air enters through a PT3/8 port, passes a 5 um (W-grade) filter element, and is regulated by the low-pressure (L) type regulator. The metal bowl has a manual drain, so condensate is emptied by hand, and the embedded square gauge reads in psi. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. This configuration has no mounting bracket and no reverse/check valve fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options for drain type, 40 um or 5 um filtration, gauge style and scale, G (BSPP) or NPT threads, and brackets. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C10MLJF2W AirTAC Filter Regulator PT3/8, 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) |
Filtered, regulated air to the clamping cylinders on a machining-centre fixture: the 5 um element helps protect valve spools from fine particulate, and the psi square gauge gives the setter a direct pressure reading at the fixture.
Feeding the pick-and-place and sealing cylinders on a packaging conveyor, where the low-pressure regulator type suits lines running below standard shop pressure and the manual drain fits a station an operator already visits each shift.
Conditioning air ahead of spray guns in an automotive or furniture finishing booth: water and 5 um particulate removal helps keep finish defects down, while regulated low pressure holds the gun supply steady.
Match the size and port to the air your line actually uses: this unit is size 300 with a PT3/8 port, and larger sizes in the family handle more flow. Drain is manual on this model - a good fit where an operator is already present and you want control over when the bowl is emptied; automatic or differential-pressure drains suit unattended positions. The 5 um (W) element is the choice when downstream valves, cylinders or instruments need finer filtration than the standard 40 um element. The embedded square gauge reads psi; MPa or bar scales and an external round gauge are order options. PT thread is standard on this code, with G (BSPP) and NPT available as order options. No bracket is included, so add one if the unit will be panel or wall mounted. Because flow is published as curves and not a single rating, send us your application details and we will confirm sizing 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 this series as curves, not as a single rated figure, so we do not quote a number. Tell us your application and working pressure and we will confirm the flow and datasheet figures for you before you order.
The W code on this model selects the 5 um filter grade. Choose it when downstream valves, cylinders or instruments need finer protection than the standard 40 um element provides; the manual drain on the metal bowl is where you check accumulated condensate during routine attention.
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.