The AirTAC GFR300C10LJF1WT AirTAC Filter Regulator NPT3/8 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 AirTAC GFR300 series does two jobs in one body: a filter that strips water and particulate from compressed air, and a regulator that sets downstream pressure. This unit is the 300 size with NPT3/8 ports, rated for up to 1.0 MPa (145 psi) inlet and for non-freezing air from -5 to 70 C. It carries the finer 5 um (W) filter element behind a polycarbonate bowl with differential-pressure drain, is the low-pressure (L) regulator type, and has an embedded square gauge scaled in MPa fitted; no mounting bracket is included (J code).
It is a genuine AirTAC part. The GFR family runs from the 200 to the 600 size with ports from 1/8 in to 1 in, PT standard thread plus G and NPT options, manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge, bracket and standard or low-pressure regulation choices. Flow figures are published as curves rather than one rated number, so ask us to confirm the datasheet and sizing for your line.
| Model | GFR300C10LJF1WT AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Feeding filtered, regulated air to the spray guns on a paint finishing line, where the 5 um element protects the nozzle tips and the low-pressure regulator holds a gentle, steady atomizing pressure.
Supplying clean air to the tuck-and-fold cylinders on a packaging conveyor, with the square MPa gauge letting line staff verify the set pressure during changeover.
Regulating air to the swing clamps around a CNC fixture, with the 5 um element keeping chips and water out of the clamp seals and the differential-pressure drain bleeding off collected condensate.
Size 300 with NPT3/8 ports sits mid-way along the G-series port ladder (1/8 in to 1 in); step up or down a size to match demand, and let us check the flow curve with you first. This build pairs the 5 um (W) element with the differential-pressure drain, the low-pressure (L) regulator type and an embedded square gauge scaled in MPa; no mounting bracket is fitted (J), so plan for panel or line mounting. The thread here is NPT, while PT is the standard and G (BSPP) is also an order option. Because flow is published as curves rather than a single rating, send 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 G-series flow as performance curves rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure and air demand and we will confirm the flow curve and datasheet for this exact unit before you order.
This unit uses the low-pressure regulator type of the GFR300 series. The catalogue does not publish an exact adjustment range for the low-pressure type, so confirm your set pressure with us before ordering. The filtering side is unchanged: a 5 um element with differential-pressure drain.
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.