The AirTAC GFR300C10ALJF2G AirTAC Filter Regulator G3/8 Low-Pressure 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 GFR300C10ALJF2G is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a G3/8 (BSPP) port, the standard 40 um filter element, an automatic drain that ejects collected condensate without manual attention, and the embedded square gauge fitted with a psi scale. It is the low-pressure regulator type, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR300 series spans sizes 200 to 600 with ports from 1/8 to 1 inch, and options include manual or differential-pressure drains, a 5 um element (code W), gauge scale in MPa, psi or bar, an external round gauge, G or NPT threads and a mounting bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10ALJF2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| 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) |
On a machining-centre fixture line, the low-pressure regulator holds a reduced clamping pressure while the 40 um element keeps water and contaminant-laden air out of the clamp cylinders; the automatic drain keeps the bowl clear through continuous shifts.
Feeding cylinders and actuators on a cartoning or wrapping line, this GFR300 cleans and regulates the supply at one take-off point, and the built-in psi gauge lets operators set and check line pressure at a glance.
At a low-pressure air-knife or blow-off station downstream of the compressor, this unit filters the supply and regulates it down to the lower working pressure the low-pressure type is built for, with the automatic drain handling condensate.
The real, decodable choices start with size: step between 200, 300, 400 and 600 to match the port and flow path your line needs - the 300 size here carries a 3/8 inch port. Drain type is a genuine decision: automatic (this unit) suits unattended duty, manual drain suits supervised points, and the default differential-pressure drain purges on line pressure drop. Filter grade is 40 um standard; specify code W for 5 um where finer protection matters. Gauge scale is selectable (MPa, psi or bar) and the thread can be ordered as PT (the standard), G or NPT. Flow is published as curves, not a single rating, so send us your flow and pressure requirements 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 GFR300 as performance curves rather than a single rated figure, so we do not quote one number. Send us your required flow and working pressure and we will confirm the datasheet curve for this exact configuration before you order.
The L code marks the low-pressure regulator variant, intended where the regulated output sits below what the standard type covers. The exact adjustment range for the low-pressure type is not published on the sheet we work from, so ask us to confirm it against your setpoint. Everything else decodes normally: G3/8 port, automatic drain, 40 um element, square psi gauge, no bracket.
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.