The AirTAC GFR40010ALF2TK AirTAC Filter Regulator NPT3/8 is a genuine G-series filter regulator: water separation, 40 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 GFR400 series is a filter regulator: it removes water and particulate from compressed air and controls downstream pressure in a single body. This unit is the 400 size with a 3/8 in NPT port, fitted with an automatic drain that expels collected condensate without manual attention, a 40 um standard filtration element, and a low-pressure regulator type for applications that operate at reduced set pressures. The embedded square gauge reads in psi, a reverse/check valve is fitted, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of ports, drain types, filter grades, gauge scales and thread options. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR40010ALF2TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 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. |
| (blank) | Filtering grade 40 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 | GFR400 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Mounted ahead of a pneumatic press in a fabrication shop, this unit filters condensed water and pipe scale from the shop air line and holds a steady reduced pressure to the press cylinders, with the automatic drain keeping the bowl clear during continuous shifts.
On a food or consumer-goods packaging line, this filter regulator conditions the air feeding conveyor stoppers, diverters and carton-closing cylinders, protecting seals from particulates while the psi gauge lets technicians verify the set point at a glance.
Installed at the air drop serving a bench assembly station, this unit delivers clean, regulated air to air screwdrivers, clamps and blow-off guns, with the reverse/check valve holding the downstream circuit if supply pressure is interrupted.
Choose the size and port step against the air demand of the circuit: the 400 size here carries a 3/8 in NPT port, and larger sizes move more air. This unit has the automatic drain, so no manual draining routine is needed; manual and differential-pressure drain variants exist if you prefer a different regime. The 40 um element is the standard grade - if finer filtration is needed, the W option gives 5 um. The square gauge is supplied reading in psi (MPa and bar scales are alternatives), the thread is NPT here with PT standard and G as orderable options, and the included bracket simplifies panel or wall mounting.
Because flow is published only as curves and not as a single rated number, ask us to confirm sizing of this GFR400 unit against your line conditions 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 GFR400 series as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure, port size and downstream demand, and we will confirm the flow and sizing data from the datasheet for your application on request.
The A in the code GFR40010ALF2TK means the bowl drains itself automatically, so collected condensate is expelled without anyone opening the drain by hand - useful on lines that run unattended. Manual (M) and differential-pressure (blank) drain variants are also available in the GFR400 series if your maintenance routine prefers them.
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.