The AirTAC GFR300C10AJC2K AirTAC Filter Regulator PT3/8, Auto Drain 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 GFR300C10AJC2K is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a PT3/8 port, a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, a round pressure gauge reading in psi, and a built-in reverse (check) valve. The maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is included with this variant.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with a range of ports, drain types, filter grades, gauges and thread options, so a variant can be matched to most compressed-air drop points. Flow is published as curves rather than a single rated figure; ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10AJC2K AirTAC Filter Regulator PT3/8, Auto Drain |
|---|---|
| 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) |
Mounted at the drop feeding the air cylinder of a small stamping or press machine, it cleans water and scale out of the shop air and holds a steady regulated pressure so the press stroke stays consistent through the shift.
Installed on the air drop serving the clamp and divert cylinders of a carton packaging conveyor, the 40 um element stops particulate reaching the valve seats while the regulator sets the gentle pressure the clamping actuators need.
Fitted at the inlet of a machine's pneumatic control cabinet ahead of the directional valve bank, it conditions the supply and regulates it to the circuit setpoint, with the round psi gauge giving the technician a direct pressure readout at the panel.
Size and port are the first choice: step up through 200, 300, 400 and 600 as your port size and air demand grow - this unit is size 300 with a 3/8 in PT port. Drain type is a real decision: automatic drain (this unit) suits points that are hard to reach or run unattended; manual drain suits attended stations; the differential-pressure default drains on a pressure differential. Filter grade is 40 um standard, with a 5 um element (code W) available where finer filtration is needed. The gauge on this unit is an external round type reading in psi; embedded square gauges and MPa or bar scales are the other catalogue options. Thread is PT as standard, with G (BSPP) and NPT available to order. A reverse/check valve is fitted here, and this variant comes without a mounting bracket. Flow is published as curves, not a single rating, so please 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 rather than a single rated figure, so we do not quote one number. Tell us your port size, line pressure and demand and we will confirm the datasheet and flow-curve figures for this unit on request before you order.
The A in the code GFR300C10AJC2K means the bowl drains itself automatically, which suits unattended or hard-to-reach installations. The catalogue also offers manual drain (code M) and the differential-pressure default, so you can order the drain style that matches how the station is maintained.
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.