The AirTAC GFR300C10LJF2W 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 GFR300C10LJF2W is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is a 3/8 in PT port unit with a 5 um filter element (the finer of the two published grades), a differential-pressure drain, a metal bowl, the low-pressure regulator type, an embedded square gauge reading in psi, and no mounting bracket or reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, manual and automatic drain options, 40 um standard or 5 um (W) filtration, alternative gauge scales, and G or NPT thread variants to order. Because AirTAC publishes flow as curves rather than a single rated figure, we confirm flow and other datasheet figures for your application on request.
| Model | GFR300C10LJF2W 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) |
Point-of-use preparation at 3/8 in air drops on an assembly line: the 5 um element removes water and fine particulate ahead of valves and cylinders while the low-pressure regulator holds the circuit at its set pressure.
Feeding a packaging machine's low-pressure actuation circuit: the combined filter regulator keeps condensate and dust out of directional valves while holding a steady downstream pressure for consistent machine cycling.
Protecting a solenoid-valve manifold on a process skid: the 5 um grade guards valve internals from particulate and carried-over water, and the square psi gauge gives operators a local reading of the set pressure.
Size and port set the air capacity: this is size 300 with a 3/8 in PT port, and you step up or down through 200 to 600 as your line's demand changes - we check the published flow curves against your application before you order. The 5 um element (code W) suits points of use that need finer filtration than the 40 um standard; the differential-pressure drain bleeds the bowl automatically as air passes, with manual and automatic drains available elsewhere in the family. The square gauge reads psi, with MPa and bar scales as alternatives. PT is the standard thread, with G (BSPP) and NPT as orderable options, and a bracket can be specified if this no-bracket version needs panel fixing. The regulator on this unit is the low-pressure type (code L); its exact adjustment range is not published in the material we hold, so we confirm it from the datasheet on request.
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 as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and expected air consumption and we will confirm the flow from the datasheet for this 3/8 in PT unit before you order.
The W code selects the 5 um element instead of the 40 um standard, for finer protection of downstream equipment; the F2 code selects the square gauge with a psi scale, with MPa and bar scales available as alternatives. The L code makes the regulator the low-pressure type - we confirm its exact adjustment range from the datasheet on request.
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.