The AirTAC GFR300C10LJC2 AirTAC Filter Regulator PT3/8 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 AirTAC GFR300C10LJC2 is a GFR300 filter regulator: one body that removes water and particulate from compressed air and holds a regulated downstream pressure. This configuration is the low-pressure regulator type, with a 40 um filter element, a differential-pressure drain on the metal bowl, and an external round gauge reading in psi. The PT3/8 port suits 3/8 in pipework, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is fitted and no reverse/check valve is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the family include manual or automatic drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads, and mounting brackets. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10LJC2 AirTAC Filter Regulator PT3/8 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) |
Spray and glue applicators on packaging and converting lines often run at reduced setpoints. This low-pressure type filter regulator cleans the supply air, drops it to the working pressure shown on the psi gauge, and its differential-pressure drain keeps condensate out of the applicator headers.
Clamp and swing cylinders around a CNC cell need steady, clean air to hold parts consistently. A GFR300 at the cell drop filters water and swarf-laden particulate to 40 um and regulates the clamp circuit pressure, with the round psi gauge giving the setter a clear local reading.
Pushers, diverters and gate cylinders on a bottling or carton conveyor line take their air from a shared header. This unit installed at the line drop removes moisture and dirt before the valves and holds the actuation pressure, while the differential-pressure drain handles accumulated condensate.
Size by port and demand: this GFR300 carries a PT3/8 port; stepping up to size 400 or 600 gives larger ports for higher air demand. Drain choice matters: differential-pressure (fitted here) clears the bowl as the pressure differential builds, automatic (code A) dumps condensate unattended, and manual (code M) needs a periodic press. Filter grade is 40 um standard; specify W for 5 um where finer protection is needed. On gauges, the embedded square gauge is standard and the external round gauge is optional, in MPa, psi or bar scales - this unit carries the round gauge with a psi scale. Thread is PT as the standard; G (BSPP) and NPT are order options. No bracket is fitted (code J), so add one if you need panel or wall mounting. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your application and we will confirm the flow and datasheet figures for this exact model on request before you order.
The embedded square gauge is the standard fitting on GFR units, but the code on this model specifies the optional external round gauge with a psi scale. If you prefer the embedded square gauge, or a different scale (MPa or bar), those are available as order options in the same series.
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.