The AirTAC GFR30010ALF1WTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR30010ALF1WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a 3/8 in NPT port, a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that expels collected condensate without manual attention, a low-pressure regulator type, an embedded square gauge scaled in MPa, and a reverse/check valve fitted. The polycarbonate bowl suits this size, and a mounting bracket is included.
This is a genuine AirTAC part in the GFR300 series, one size step in a range spanning 200, 300, 400 and 600 with port options from 1/8 in to 1 in and thread choices of PT (standard), G and NPT. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR30010ALF1WTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 clamping cylinders on a machining fixture that runs at reduced pressure, with the 5 um element protecting the directional valve seats and the check valve holding the circuit if supply pressure drops.
Supplies clean, regulated air to pneumatic gauges and transducers on a laboratory or QC test bench, where the 5 um filtration and the MPa square gauge let an operator set and verify supply at a glance.
Conditions air for a single packaging-machine station, combining water and particulate removal with low-pressure regulation in one body, while the automatic drain keeps condensate off the station's valves without daily attention.
Choose the size and port step against the air demand of the circuit: this unit is the 300 size with a 3/8 in NPT port, one step up from the 200/1/4 in class. The 5 um element (code W) is the right choice where downstream valves, cylinders or instruments need finer filtration than the 40 um standard; the automatic drain suits unattended or hard-to-reach installations, while manual and differential-pressure drains remain available in the series. The low-pressure regulator type is intended for circuits that operate at reduced pressures - confirm the exact adjustment range with us before ordering. The embedded square gauge reads in MPa, with psi or bar scales and an external round gauge available as options. NPT is a catalogue thread option ordered in place of the PT standard; G (BSPP) is also available, and the included bracket simplifies panel or wall mounting.
Because flow is published as curves and not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and line pressure and we will confirm the flow figures from the datasheet on request before you order.
The A in the code sets the automatic drain, which ejects collected condensate without manual intervention - useful for unattended installations. The W sets the 5 um filter element, one grade finer than the 40 um standard, for circuits feeding sensitive valves or instruments. Both are catalogue choices; the series also offers manual and differential-pressure drains and the 40 um element.
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.