The AirTAC GFR30010ALF2WTK 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 GFR30010ALF2WTK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 3/8 in NPT port, a fine 5 um filter element (code W, versus the 40 um standard), an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type for circuits that run below standard regulating ranges. It ships as coded with an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. The polycarbonate bowl is rated for a maximum inlet pressure of 1.0 MPa (145 psi) and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, and PT, G or NPT threads. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for your application before you order.
| Model | GFR30010ALF2WTK 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 — square, psi 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. |
| 2 | Gauge scale: psi. 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) |
On a fixture-clamping circuit that runs at reduced pressure, this low-pressure-type filter regulator cleans the shop air to 5 um, holds the clamp pressure steady, and its check valve holds the setting if upstream supply dips.
Feeding cylinders and air bells on a carton-sealing conveyor, the automatic drain keeps condensate out of the valves during continuous shifts while the 5 um element protects the directional valves downstream.
At a paint or coating booth, the fine 5 um grade and steady low-pressure regulation give the spray gun clean, stable air, and the psi gauge lets the operator set and verify gun pressure at a glance.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 3/8 in NPT port, one step up from the 1/4 in size-300 base and one step below size 400. Drain type is a real decision: automatic (as coded here) suits unattended duty, manual suits periodic checks, and the differential-pressure default drains only when the pressure drop warrants it. Filtration is 5 um as coded (W); select 40 um where coarser, standard-grade filtration is enough. The gauge is the embedded square type with a psi scale; MPa and bar scales and an external round gauge are alternatives. PT is the standard thread, with G (BSPP) and NPT as catalogue options to order. A bracket is included on this code, and the reverse/check valve is fitted.
Because AirTAC publishes flow for the GFR series only as curves, not as a single rated number, we cannot quote a rated flow here. Send us your application details and we will confirm sizing against the datasheet curves before you order.
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 GFR series as curves rather than a single rated figure, so no rated flow number is quoted here. Tell us your application and we will confirm the flow from the datasheet curves on request before you order.
L is the low-pressure regulator type, intended for circuits that run below standard regulating ranges; the exact regulating range for this low-pressure version is not published, so we confirm it on request. The rest of the code decodes as: 10 = 3/8 in NPT port, A = automatic drain, F2 = square gauge with psi scale, W = 5 um filter element, T = NPT thread, K = reverse/check valve fitted.
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.