The AirTAC GFR30010ALC3WT 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 GFR30010ALC3WT is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration carries a 3/8 in NPT port, a 5 um filter element (code W) for finer filtration than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type. It ships as a genuine AirTAC part with a round external gauge reading in bar, the embedded square gauge as the standard alternative, and a mounting bracket included.
This unit is one size within the GFR range, which spans sizes 200 to 600 with port options from 1/8 in to 1 in and PT, G (BSPP) or NPT threads. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this 300 size is polycarbonate (PC). Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30010ALC3WT 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 | Low-pressure 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (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) |
On a machining cell where air cylinders clamp and press workpieces, this unit cleans the supply to 5 um and holds a stable low set pressure to the cylinder circuit, with the automatic drain keeping condensate out of the valves.
For bench rigs and lab equipment that need clean, finely regulated low-pressure air, the 5 um element protects sensitive instruments while the low-pressure type regulator sets gentle working pressures, read on the bar gauge.
On a bottling or packaging line driving air-operated diverters and stop gates, this filter regulator conditions the supply at the 3/8 in take-off point, and the automatic drain handles moisture without daily manual blowdown.
Choose the size and port step against the air consumption of the circuit: this 300-size unit has a 3/8 in NPT port, and larger sizes carry larger ports and more flow. The 5 um element (W) suits circuits that need finer filtration than the standard 40 um grade; the automatic drain suits unattended installations where condensate must be expelled without operator rounds. The low-pressure regulator type is intended for circuits that work at lower set pressures - the exact regulation range for this type is not published, so confirm it with us before ordering. The round bar gauge is fitted here; square embedded gauges and MPa/psi/bar scales are the other options.
Flow for this family is published as curves, not a single rating, so we cannot quote a rated figure. Send us your application details and we will confirm sizing against the datasheet before you order. Thread is NPT here; PT (standard) and G (BSPP) are order options, and a mounting bracket is included on this code.
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 family as curves, not as a single rated figure, so we do not quote a rated l/min, m3/h or SCFM number. Tell us your application and required air consumption, and we will confirm the sizing against the datasheet on request before you order.
The W code in GFR30010ALC3WT selects the optional 5 um filter element instead of the standard 40 um grade, giving finer removal of water and particulate. The A code selects the automatic drain, which expels collected condensate by itself instead of relying on the default differential-pressure drain or manual draining - useful where the unit is not checked daily.
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.