The AirTAC GFR40010MLC1WT AirTAC Filter Regulator NPT3/8 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 GFR40010MLC1WT is an AirTAC GFR400-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built around a 3/8 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), a manual drain on the PC bowl, and the low-pressure regulator type. An external round gauge with an MPa scale is fitted, and a mounting bracket is included. The 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 options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, and gauge choices. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010MLC1WT AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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, MPa 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. |
| 1 | Gauge scale: MPa. 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 light-duty assembly press running at deliberately gentle regulated pressure, this unit filters incoming compressed air to 5 um and holds a low setpoint, with the round MPa gauge giving the operator a clear line-pressure readout.
Feeding the cylinders and air bells on a carton-sealing or wrapping line, the filter regulator keeps water and fine particulate out of the actuators while the low-pressure type regulator suits equipment specified for lower operating pressures.
Supplying pick-and-place modules and small test-rig actuators in a lab automation cell, the 5 um element protects sensitive components, the manual drain suits a supervised environment, and the included bracket simplifies panel-side mounting.
Start with the size and port: this unit is size 400 with a 3/8 in NPT port, one step up from the 300 series, so step up or down if your line needs a different flow path. The 5 um element here is the finer option; the standard grade is 40 um if your downstream equipment tolerates coarser filtration. Drain choice matters: this unit has a manual drain, meaning someone drains the bowl on a schedule; automatic and differential-pressure drains are available if you cannot rely on manual attention. The gauge fitted here is the external round type with an MPa scale; embedded square gauges and psi or bar scales are alternatives. Thread is NPT on this code, with PT as the AirTAC standard and G (BSPP) also orderable, and the mounting bracket is included. As this is the low-pressure regulator type, its adjustment range differs from the standard type and we confirm the exact range from the datasheet on request. Flow is published as curves, not a single rating, so ask us to confirm 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, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your inlet pressure, setpoint and expected air demand and we will confirm the sizing against the datasheet curves before you order.
The M in the code specifies a manual drain: condensate collected in the PC bowl is released by hand, which suits attended installations on a maintenance schedule. If the unit will be left unattended, the same series is available with an automatic drain (code A) or a differential-pressure drain (blank), and the regulator adjustment range also differs by drain type, so tell us how the unit will be operated and we will confirm the right configuration.
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.