The AirTAC GFR300C10ALJF2WGK AirTAC Filter Regulator G3/8 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 GFR300C10ALJF2WGK 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 unit is configured with a G3/8 (BSPP) port, a 5 um filter element (the finer W grade, versus the standard 40 um), an automatic drain that expels collected condensate without manual intervention, a low-pressure regulator type, an embedded square gauge reading in psi, and a built-in reverse/check valve. It is supplied without a mounting bracket and carries a metal bowl. 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 filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and is offered with manual, automatic or differential-pressure drains, 40 um or 5 um filtration, standard or low-pressure regulation, gauge and scale choices, G, NPT or PT threads, and bracket options. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for your application on request.
| Model | GFR300C10ALJF2WGK AirTAC Filter Regulator G3/8 |
|---|---|
| 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) |
Point-of-use air preparation for the cylinder banks on a cartoning or case-packing line: water and fine particulate are stripped out at 5 um while the low-pressure regulator holds a gentle, stable setting for delicate clamp and pusher actuators.
Clean, finely regulated air for bench-top test rigs and lab automation, where the 5 um element protects sensitive instrumentation and the psi-scale square gauge gives a direct readout in the units the rig operator works in.
Conditioning the supply to air-jet and pneumatic components on weaving or spinning machines, where moisture carry-over causes faults: the automatic drain continuously purges the metal bowl so the line keeps running without daily manual draining.
Size and port are the first decision: step up from 200 through 300, 400 to 600 as your port size and air demand grow - this unit sits at size 300 with a 3/8 inch G-thread port. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering. Other real choices in this family: drain type (automatic, as fitted here, versus manual or differential-pressure), filter grade (40 um standard versus the 5 um W grade fitted here - choose 5 um where downstream equipment needs finer air), gauge scale (MPa, psi or bar), thread (PT is the standard; G and NPT are order options), and bracket. The low-pressure regulator type on this unit is intended where controlled pressures sit below the standard type's range; we confirm the exact adjustment range 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 GFR series as characteristic curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number on the page. Tell us your operating pressure and air demand and we will confirm the flow from the datasheet curves for this exact G3/8, 5 um, low-pressure configuration on request.
The W code on this model selects the optional 5 um filter grade instead of the 40 um standard, for finer removal of particulate and entrained water ahead of sensitive equipment. The A code selects the automatic drain, which expels collected condensate from the bowl on its own instead of waiting for a manual drain - useful on lines that run unattended. Both are standard catalogue options you can also order the other way around.
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.