The AirTAC GFR400C10ALF2WT AirTAC Filter Regulator NPT3/8 Low-Pressure 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 See datasheet ports, a differential-pressure 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 GFR400C10ALF2WT is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds a reduced downstream pressure in a single body. This configuration is built with a 3/8 in NPT port, the low-pressure regulator type, a 5 um filter element, an automatic drain that ejects collected condensate without manual attention, an embedded square gauge reading in psi, a metal bowl, and the mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options across the family include manual or differential-pressure drains, a 40 um standard element, alternative gauge scales, G (BSPP) or NPT threads in place of the PT standard, and a reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR400C10ALF2WT AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
On a CNC machine's pneumatic clamping fixture, the unit strips water and pipe-scale particulate from the shop air line and holds a steady reduced pressure to the clamp cylinders, while the automatic drain keeps condensate out of the bowl without daily manual checks.
On a packaging conveyor's pick-and-place station, the filter regulator conditions the air feeding the grippers and cylinder valves, and the psi-scale square gauge lets a technician set and verify the low regulated pressure the actuators were sized for.
On a laboratory pneumatic test bench, the 5 um element protects sensitive instruments and flow controls from particles and water, and the low-pressure regulator type suits rigs that operate well below standard factory line pressure.
Size the unit by port and flow: this 400-size body carries a 3/8 in NPT port, and you can step up or down through sizes 200 to 600 as your flow demand changes. The automatic drain suits unattended duty; manual and differential-pressure drains are the alternatives in the family. The 5 um element (code W) is the finer choice against the 40 um standard. The square gauge is fitted here in a psi scale; MPa and bar scales and an external round gauge are options. The thread is NPT on this model; PT is the AirTAC standard and G (BSPP) is also orderable. The mounting bracket is included. The low-pressure regulator type serves circuits that run below standard regulated pressures - the exact adjustment range is not published, so confirm it with us. Flow is published as curves, not a single rating, so ask us to check 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 GFR400 series as curves rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure, downstream pressure target and air consumption, and we will confirm the flow and sizing from the datasheet on request.
The automatic drain ejects collected condensate on its own, which suits units mounted in awkward spots or on lines that run unattended; manual and differential-pressure drains are the family alternatives. The 5 um element (code W) filters more finely than the 40 um standard, which matters for valves, cylinders and instruments that are sensitive to particles.
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.