The AirTAC GFR30010ALF3WT AirTAC Filter Regulator NPT 3/8 in 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, and this GFR30010ALF3WT is the low-pressure variant fitted with an automatic drain. It takes NPT 3/8 in ports, carries the 5 um filter element (the finer of the two catalogue grades), and the polycarbonate bowl sheds collected condensate on its own, so nobody has to open a manual drain at the end of a shift. An embedded square gauge reading in bar is fitted, a mounting bracket is included, and the unit is rated for up to 1.0 MPa (145 psi) inlet pressure at -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family runs from size 200 to 600 with ports from 1/8 in to 1 in, in PT (standard), G or NPT thread, with 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and standard or low-pressure regulation. Flow is published as curves rather than a single rating, so send us your application and we will confirm the figures from the datasheet on request.
| Model | GFR30010ALF3WT AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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, 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). |
| F | Gauge shape: Square. 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) |
Feeding the cylinder manifold on a cartoning or case-packing line, where the low-pressure regulator holds a gentle clamping pressure and the 5 um element keeps fine dirt and water out of the directional valves.
Regulating atomizing air on a low-pressure spray or coating station, with the automatic drain clearing condensate from the supply line so moisture never reaches the finish.
Supplying a pick-and-place gripper circuit on an assembly cell, where filtered, low-pressure air protects soft seals and the bar gauge gives operators a visible setpoint.
Size 300 with 3/8 in NPT ports sits in the middle of the GFR range; step down to 200 or up to 400/600 to match your air demand, and match the thread to your piping (PT is the standard, G and NPT are order options). This unit pairs the 5 um element with an automatic drain, which suits unattended installations; the 40 um grade with a manual or differential-pressure drain is the alternative. The low-pressure regulator type is intended where working pressure stays well below the standard range - ask us to confirm the exact adjustment span. The gauge here reads in bar; MPa and psi scales exist, and an external round gauge is optional. Because flow is published as curves, not a single rated figure, let us check your requirement against the datasheet before you order.
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 as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the flow from the datasheet on request before you order.
This unit carries code A, the automatic drain, which discharges collected condensate by itself - useful on lines that run unattended. The GFR300 is also catalogued with a manual drain and with the differential-pressure drain, and the 40 um element is the standard alternative to the 5 um grade fitted here.
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.