The AirTAC GFR30010AJF1WTK AirTAC Filter Regulator NPT 3/8 in is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a automatic 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 GFR30010AJF1WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a 3/8 in NPT port, 5 um filtration (the finer of the two available grades), an automatic drain that ejects collected condensate without manual attention, a fitted reverse/check valve, and an embedded square pressure gauge reading in MPa. Its regulation range is 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi), and it operates in temperatures from -5 to 70 C (non-freezing). The polycarbonate bowl keeps the condensate level visible at a glance.
This is a genuine AirTAC part. The GFR series is available in 200, 300, 400 and 600 sizes covering port sizes from 1/8 in to 1 in, with manual, automatic or differential-pressure drains, 40 um or 5 um filter grades, gauge and scale choices, and PT, G or NPT threads. 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 | GFR30010AJF1WTK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Clean, regulated air to a bench pneumatic press: the 5 um element protects the cylinder seals from particulate and water, while the regulator holds a consistent set pressure stroke after stroke and the square gauge gives the operator a visible setpoint.
Feeding air cylinders that divert cartons on a packaging conveyor. The automatic drain keeps condensate out of the valve bank without daily attention, and the check valve holds the downstream setting if upstream supply dips.
A point-of-use conditioning drop off a factory air main: one body filters the line air to 5 um and sets the branch pressure for actuators and air tools, with the MPa gauge letting maintenance verify the branch setting at a glance.
Step up or down through the GFR sizes (200/300/400/600) to match the port size and air demand of your circuit; the 300 size with its 3/8 in NPT port sits in the middle of the range. Choose the drain to suit access: automatic (as here) where the unit is hard to reach, manual where you prefer controlled bleeding, or the default differential-pressure type. Pick 5 um filtration when downstream valves, cylinders or instruments need finer air than the standard 40 um element provides. Gauge scale (MPa, psi or bar), thread family (PT standard, G or NPT to order) and bracket inclusion are all decodable options.
Because flow is published as curves rather than a single rating, we do not quote a rated flow number for this unit. Send us your application details and we will confirm the sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and air demand and we will confirm the sizing from the datasheet on request before you order.
In the code GFR30010AJF1WTK, the A position selects the automatic drain, which ejects collected condensate on its own instead of relying on manual or differential-pressure action, and the W position selects the 5 um filter element instead of the standard 40 um grade. Both are catalogue options; the standard configuration would be differential-pressure drain with 40 um filtration.
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.