The AirTAC GFR30010AJC3WT AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 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 cleans the air and holds your downstream pressure steady. This configuration, the GFR30010AJC3WT, is the size 300 unit with a 3/8 in NPT thread, a 5 um filter element for finer filtration than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and a round pressure gauge reading in bar. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing, and the polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, an optional reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30010AJC3WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeds filtered, regulated air to the tool-change and clamping circuits of a CNC machining centre, where the 5 um element protects precision valves from particulate and the automatic drain keeps condensate out of the spindle-area actuators.
Conditions the air feeding pick-and-place and sealing cylinders on a packaging conveyor line, holding a steady regulated pressure so carton-forming and sealing motions stay repeatable through the shift without an operator draining the bowl.
Supplies clean, regulated air to the pneumatic valves and grippers of a laboratory automation skid, where the fine 5 um grade and visible polycarbonate bowl support the cleanliness and monitoring the process demands.
Start with the port size: this unit steps up to 3/8 in NPT within the size 300 body, which suits lines drawing more air than a 1/4 in point-of-use supply. Choose the 5 um element, as specified here, when downstream valves, cylinders or instruments tolerate less particulate carryover than the standard 40 um grade. The automatic drain on this unit suits unattended or hard-to-reach installations; choose manual drain where you prefer controlled blowdown, or the default differential-pressure drain where a pressure drop across the element can trigger purging. The round bar gauge is the external option; an embedded square gauge with MPa, psi or bar scales is also available. PT is the standard thread, with G and NPT as order options, and a mounting bracket can be added. Flow for this series 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 GFR300 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your application and required flow, and we will confirm the figures from the datasheet before you order.
The A in this code specifies an automatic drain, which expels collected condensate on its own - useful where the unit is mounted out of reach or the line runs unattended. The alternatives are the default differential-pressure drain and a manual drain (code M), which you operate yourself. All three are catalogue options on the GFR300.
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.