The AirTAC GFR40010MLC3WT AirTAC Filter Regulator NPT3/8 5um 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 AirTAC GFR40010MLC3WT is a size 400 filter regulator: water and particulate removal plus downstream pressure regulation combined in one body. This configuration is built with a 3/8 in NPT port, 5 um filtration (the finer W grade, versus the standard 40 um element), a manual drain on the polycarbonate bowl, the low-pressure regulator type, and a round external gauge scaled in bar. It suits lines where the downstream setpoint sits in the lower part of the working band and where an operator can bleed the bowl on a scheduled walk-round.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G and NPT thread options. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR40010MLC3WT AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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, bar 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. 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. |
| 3 | Gauge scale: bar. 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 | GFR400 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a coating line, the GFR40010MLC3WT filters water and particles out of the supply at 5 um and holds a steady low setpoint to the spray guns, with the bar gauge letting operators verify the setting at a glance and the manual drain bled at shift start.
Feeding clamps and workholding fixtures on a CNC cell, this unit removes condensate and fine particulate before the valves and holds the low clamping pressure the fixtures were designed around; the bracket gives a clean panel mount next to the manifold.
On a carton sealing or palletizing line, the combined filter and regulator in one body conditions the air feeding cylinder-driven pushers and diverters, with the manual drain handled during scheduled maintenance rounds and the 3/8 in NPT port matching the line's drop piping.
Size 400 with a 3/8 in port is the step to pick when your line's flow demand sits above what a 1/4 in unit carries comfortably - match the size to the flow curve, not to the pipe alone. This unit is already specified with the choices that matter: 5 um filtration for finer protection of downstream tools and valves, a manual drain for controlled, scheduled bowl bleeding, the low-pressure regulator type, a round bar gauge, and a mounting bracket included. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable if your pipework needs it.
One honest note on sizing: AirTAC publishes flow for this series as curves, not a single rated number, so we cannot quote you a rated flow figure. Send us your application's flow and pressure requirements and we will confirm the sizing against the datasheet before you order.
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 performance curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application's flow and pressure requirements and we will confirm the sizing against the datasheet on request before you order.
The M in the code specifies a manual drain: the bowl is bled by hand on a schedule, which suits lines with regular maintenance rounds. If you would rather not rely on operator discipline, the same GFR400 size is available with an automatic drain (code A) or the differential-pressure drain (blank) - ask us for the matching model 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.