The AirTAC GFR300C10AJF3WT 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 GFR300C10AJF3WT is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size-300 configuration has NPT 3/8 ports, a 5 um filter element (code W), an automatic drain, and the embedded square gauge with a bar scale. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, maximum inlet pressure is 1.0 MPa (145 psi), operating temperature is -5 to 70 C (non-freezing), no reverse/check valve is fitted, and the unit comes without a mounting bracket. The bowl on size 300 is PC (polycarbonate).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options up to 1 inch, and the series offers manual or differential-pressure drains, a 40 um standard element, gauge scales in MPa, psi or bar, PT/G/NPT thread variants, brackets and an external round gauge. Flow is published as curves rather than a single rated figure, so ask us to confirm datasheet figures for your application before ordering.
| Model | GFR300C10AJF3WT 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 clean, pressure-stabilised air to a machine tool's clamping fixtures and tool-change cylinders, where the 5 um element protects tight-tolerance valves from water and swarf carried in shop air.
Conditioning the air feeding spray guns on a finishing line: the 5 um grade strips water and particulate that would otherwise cause fisheyes and defects in the coating, while the regulator holds a consistent gun supply pressure.
Supplying the cylinders and gripper valves on a carton packing conveyor, with the automatic drain clearing condensate from the bowl on its own so the station keeps running through humid summer shifts.
This model is already pinned to one point in the GFR300 range: NPT 3/8 ports, 5 um filtration, automatic drain, square bar gauge, no bracket and no check valve. If your line needs coarser standard filtration, the 40 um element is the series default; if condensate load is light or drains are checked routinely, manual and differential-pressure drain versions exist instead of this automatic one. Gauge scale can be MPa or psi rather than bar, threads come as PT (standard) or G as well as this NPT version, and a bracket can be added where the unit is not panel- or manifold-mounted.
Step up or down through sizes 200, 300, 400 and 600 to match the port size and flow your circuit needs. Because AirTAC publishes flow as curves rather than a single rated number, send us your application details and we will confirm sizing against the datasheet 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 the GFR series as performance curves, not as a single rated figure, so there is no honest one-number answer we can print. Tell us your application and required flow, and we will confirm the sizing against the datasheet on request before you order.
This configuration carries code A, the automatic drain, so condensate collected in the bowl is expelled without anyone having to open it. The GFR series is also available with a manual drain or the differential-pressure drain (the series default), so you can match the drain type to how the unit is attended on your line.
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.