The AirTAC GFR300C10ALJC2WG AirTAC Filter Regulator G3/8, 5 um 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 GFR300C10ALJC2WG is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a G3/8 (BSPP) port, a 5 um filter element (code W, one step finer than the 40 um standard), an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator type. It is fitted with an external round gauge scaled in psi, has a metal bowl, no mounting bracket, and no reverse/check valve. 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 family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and is ordered with your choice of drain type, filter grade, gauge and scale, thread (PT standard; G and NPT are order options), bracket and check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C10ALJC2WG AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| 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) |
At a spray booth drop, the 5 um element takes finer moisture and particle load out of the supply line while the regulator sets a steady, lower gun pressure - and the automatic drain keeps the bowl clear through a full shift without an operator stopping by.
On a carton-forming and sealing conveyor, the GFR300C10ALJC2WG filters the air feeding the flap-tuck and press cylinders and holds the reduced pressure their actuation was set up for, with the round psi gauge giving the line technician a direct reading at the machine.
On a pick-and-place cell with delicate gripper tooling, the low-pressure regulator type suits circuits that run well below standard line pressure, while the 5 um element protects the small valve and gripper ports; the automatic drain suits a cell that runs unattended.
Step through the decodable choices in order. First, size and port: this is size 300 with a 3/8 inch port - step up or down (200/300/400/600) if your line port differs or your air demand is larger. Second, drain: automatic (this unit) empties the bowl unattended; manual and differential-pressure drains are the alternatives. Third, filter grade: this unit carries the 5 um element (W) against the 40 um standard - choose 5 um where downstream equipment needs finer air. Fourth, gauge: this unit has an external round gauge in psi; embedded square gauges and MPa/bar scales are the other options. Thread is G here, with PT as the catalogue standard and NPT available to order; bracket and check valve are also order choices (this unit has neither). Because flow is published as curves and not a single rating, 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 this series as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Send us your line pressure, downstream demand and port size and we will confirm the sizing against the datasheet on request.
The W in the code sets the 5 um filter element, one step finer than the 40 um standard, for downstream equipment that needs cleaner air. The A sets an automatic drain, which expels collected condensate on its own instead of waiting for a manual or differential-pressure drain cycle. Both are order choices across the GFR range.
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.