The AirTAC GFR300-10 AirTAC Filter Regulator PT3/8, 5 um, Auto Drain 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 GFR300-10 is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single 300-size body with a PT3/8 (3/8 in) port. This configuration carries the 5 um filter element (code W) instead of the 40 um standard, an automatic drain that ejects collected condensate without manual attention, a fitted reverse/check valve (code K) that holds downstream pressure when the supply is lost, and an embedded square gauge reading in psi. The pressure regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size; only the 600 size uses an aluminium alloy bowl. No mounting bracket is included with the J suffix.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from PT1/8 up to PT1, G (BSPP) and NPT threads to order, manual or differential-pressure drains as alternatives to the automatic drain fitted here, and 40 um or 5 um filtration. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300-10 AirTAC Filter Regulator PT3/8, 5 um, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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, psi 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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) |
Feeding clamps and cylinders on a stamping cell: the 5 um element keeps wear particles out of valve spools, the regulator holds a steady set pressure stroke to stroke, and the check valve keeps the circuit pressurised if the plant air drops.
Air prep for flap-folders and tape heads on a carton sealer: clean, dry, regulated air at the machine, with the automatic drain clearing condensate through long shifts so no one has to bleed the bowl by hand.
Point-of-use regulation for pick-and-place gripper circuits: the 5 um grade protects small pilot valves and vacuum generators, and the psi gauge gives technicians a direct readout at the cell.
Size 300 with a 3/8 in port sits in the middle of the GFR range: step up to 400 or 600, or down to 200, according to the flow your line needs - we can check the published flow curves against your demand before you order. This unit is already set for automatic drain, 5 um filtration, a square psi gauge and a reverse/check valve; if you would rather have the 40 um standard element, a manual or differential-pressure drain, a different gauge scale (MPa or bar), or an external round gauge, those are catalogue options on the same family. Thread is PT as standard; G (BSPP) and NPT are available to order. The J code means no mounting bracket is supplied - a bracket version exists if you want panel or wall mounting. Because flow is published as curves and not a single rating, send us your application details and we will confirm sizing from the datasheet.
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 GFR300 as curves, not as a single rated number, so we do not quote a figure here. Send us your application details and we will confirm the flow and sizing from the datasheet before you order.
The A in the code GFR30010AJF2WK specifies the automatic drain, which ejects collected condensate on its own instead of waiting for a manual bleed, and the W specifies the 5 um filter element instead of the 40 um standard. Both are catalogue choices on the GFR300; the 40 um element and manual or differential-pressure drains are available if your application prefers them.
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.