The AirTAC GFR30010AJC3T AirTAC Filter Regulator NPT3/8 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 PT3/8" ports, a automatic 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 GFR300 series combines water and particulate filtration with pressure regulation in a single body, so one unit both cleans the compressed air and sets a stable downstream pressure. This configuration, the GFR30010AJC3T, is built for 3/8 in NPT ports, carries a 40 um standard filter element, and is fitted with an automatic drain that removes collected condensate from the PC (polycarbonate) bowl without manual intervention. The standard-type regulator adjusts from 0.15 to 0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit is supplied with an external round gauge scaled in bar. A reverse/check valve is not fitted, and no mounting bracket is included. Operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600, with port sizes stepping up accordingly, and with catalogue options including differential-pressure, automatic or manual drains, a 5 um filter element (code W), square or round gauges scaled in MPa, psi or bar, G (BSPP) or NPT threads in place of the PT standard, and bracket choices. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30010AJC3T AirTAC Filter Regulator NPT3/8 Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Point-of-use conditioning on a CNC machining centre: the 40 um element strips water and swarf-carrying particulate before the machine's pneumatic valves and clamps, while the regulator holds the set pressure the tool changer and clamping circuit were designed around.
Mounted at the drop feeding carton-sealing and case-packing cylinders on a packaging conveyor line: clean, regulated air keeps the pick-and-place and pressing strokes repeatable through the shift, with the automatic drain handling condensate without operator attention.
Conditioning the air line feeding spray guns in a finishing booth: the filter stage removes water and pipe scale that would otherwise blemish the finish, and the regulator sets the atomising pressure the gun manufacturer specifies, read directly on the bar-scaled round gauge.
Choose the GFR size by matching the port step to the air demand of the circuit: this 300-size unit takes 3/8 in NPT ports, and larger sizes (400, 600) move more air at the same pressure. Drain type is a real operating choice: this unit has an automatic drain, which suits unattended installations; the catalogue also offers the differential-pressure default and a manual drain, and note that the regulation range differs by drain type (0.15-0.9 MPa for automatic and differential-pressure, 0.05-0.9 MPa for manual). The 40 um element fitted here is the standard grade; specify code W if the application needs the 5 um option. Gauge scale is selectable (MPa, psi or bar) and this unit carries the round gauge in bar; the embedded square gauge is the alternative. Thread is NPT here, with G (BSPP) available as an order option; the PT thread is the catalogue standard. Bracket options apply (this unit is ordered without one). 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 rather than a single rated figure, so we do not quote one number here. Tell us your inlet pressure, set pressure and the air demand of the circuit, and we will confirm the flow from the datasheet curves for this exact model before you order.
Yes. This configuration is ordered with an automatic drain, which suits installations where nobody empties the bowl regularly. The catalogue also offers the differential-pressure drain (the default) and a manual drain. The drain type also affects the regulation range: with an automatic or differential-pressure drain the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), while the manual-drain version adjusts from 0.05 to 0.9 MPa (7-130 psi).
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.