The AirTAC GFR40010MLC2WTK AirTAC Filter Regulator NPT 3/8 in, 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR40010MLC2WTK is an AirTAC GFR400 filter regulator, a single-body unit that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built with a 5 um filter element (code W), a manual drain on the PC bowl, and a low-pressure regulator type for circuits that run at reduced pressure rather than full line pressure. It takes a 3/8 in NPT port, carries an external round gauge scaled in psi, and includes a reverse/check valve (code K) plus a 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 filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale, thread (PT standard, G and NPT as options), bracket and reverse valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR40010MLC2WTK AirTAC Filter Regulator NPT 3/8 in, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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 | GFR400 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a paint line where guns and atomising air run at reduced pressure, this low-pressure-type filter regulator cleans the shop air to 5 um and holds a steady, manually set supply pressure at each booth drop.
A lab air header feeding analysers and pneumatic test rigs uses the 5 um element to strip water and fine particulate, with the psi gauge giving a clear local reading and the check valve holding the setting if supply dips.
On a cartoning or palletising conveyor, this unit conditions and regulates the air feeding cylinders and grippers at one machine drop, with the manual drain cleared during shift checks and the bracket fixing it to the machine frame.
Size the unit by the port and flow step: this is size 400 with a 3/8 in NPT port; step up to size 600 or down to size 300 if your line needs a different port. This code fixes several choices: manual drain (wipe or bleed the bowl by hand, suited to intermittent duty or where an auto drain is not wanted), 5 um filtration instead of the 40 um standard, a round external gauge scaled in psi, a reverse/check valve, and NPT thread - PT is the catalogue standard, with G (BSPP) and NPT available as order options. The regulator is the low-pressure type; its exact adjustment range is not published, so confirm it with us before ordering. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application 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, not as a single rated figure, so we do not quote a l/min or SCFM number. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the flow and datasheet figures for this exact model on request before you order.
The M in the code selects a manual drain: condensate collected in the PC bowl is released by hand, which suits intermittent or attended duty. The same GFR400 size is also available with an automatic drain (code A) or the differential-pressure drain (blank) if you prefer the bowl to discharge without operator action - just ask for the alternative code.
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.