The AirTAC GFR30010ALNWT AirTAC Filter Regulator 3/8 in NPT, 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 GFR30010ALNWT is an AirTAC GFR300 filter regulator: one body that first removes water and particulate from compressed air, then regulates the downstream pressure. This configuration is built around a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), and an automatic drain that expels collected condensate from the PC bowl without anyone opening it. It is the low-pressure type, comes with no gauge fitted, and includes a mounting bracket.
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, and gauge options. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30010ALNWT AirTAC Filter Regulator 3/8 in NPT, 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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) |
Air-prep point for clamps and swing cylinders on a CNC cell: the 5 um element keeps fine contamination out of fixture valves while the regulator holds a steady, low set pressure for consistent clamping.
Feeds the cylinders and air actuators on a cartoner or case packer, where the automatic drain handles condensate between shifts and the low-pressure type suits gentle actuation circuits.
Conditioning point on a lab bench or pilot rig: the 5 um grade polishes the air ahead of sensitive instruments and the regulator lets operators set a stable low working pressure for each test.
Start with the port step: size 300 with a 3/8 in port sits in the middle of the GFR range, so step up to 400 or 600 if your line may grow, or down to 200 for compact points of use. Drain type is a real choice: this unit has the automatic drain, which suits unattended or hard-to-reach installations; differential-pressure and manual drains are available on the same frame. The 5 um element here is the finer grade - choose it where downstream valves and cylinders see finer contamination; the 40 um grade is the standard alternative.
Note the remaining decodable options: this code specifies NPT thread (PT is the standard; G is also orderable), no gauge fitted (embedded square or external round gauges with MPa, psi or bar scales can be ordered), and a bracket included. Because flow is published as curves rather than 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. 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, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm the right size from the datasheet curves on request before you order.
Both are read straight from the code. The A position selects the automatic drain, which ejects condensate from the bowl on its own - useful where the unit is mounted out of easy reach. The N position means no gauge is fitted; an embedded square or external round gauge with an MPa, psi or bar scale can be ordered for the same unit.
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.