The AirTAC GFR40010MLJF2T AirTAC Filter Regulator 3/8 NPT 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 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, so one 3/8 in NPT connection can deliver cleaned, regulated air to the rest of the circuit. This configuration is the size 400 unit with NPT threads, a manual drain bowl in polycarbonate, standard 40 um filtration, the low-pressure regulator type, an embedded square gauge scaled in psi, and no reverse/check valve. The manual drain means an operator opens the bowl drain to expel collected condensate, which suits installations visited on a routine maintenance round. 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 from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge and scale options, PT, G or NPT threads, and bracket choices. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm the flow and datasheet figures for your application before ordering.
| Model | GFR40010MLJF2T AirTAC Filter Regulator 3/8 NPT Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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 — square, psi 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. |
| J | Supplied without bracket. |
| (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. |
| (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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Point-of-use conditioning for a carton-sealing or wrapping machine: the filter stage removes water and pipe scale before the low-pressure regulator sets a stable supply to seal jaws and small cylinders, with the psi gauge giving the operator a visible setpoint.
Conditioned air for spray guns and coating applicators, where the 40 um element keeps particulates out of the finish and the low-pressure regulator holds the gun supply at the gentle pressure the process calls for.
Local air preparation for a gripper manifold on an assembly cell: filtered, regulated air at low pressure feeds suction cups and small actuators, and the manual drain suits a cell that is checked on a fixed maintenance round.
Start with the port step: this unit is size 400 with a 3/8 in NPT port, and the G-series steps up through 200, 300, 400 and 600 as port size and flow capacity grow, so match the size to the air demand of the circuit rather than the pipe alone. Drain type is a real choice here: this code carries a manual drain, while automatic and differential-pressure drains are available on the same series if the bowl cannot be drained by hand on a schedule. Filtration is the standard 40 um element; specify the W option for 5 um where downstream equipment needs finer protection. The embedded square gauge on this code is scaled in psi, with MPa and bar scales and an external round gauge available as options. PT is the standard thread and G (BSPP) or NPT are catalogue options to order - this code is specified with NPT. No mounting bracket is included with this code; brackets are a catalogue option. Because AirTAC publishes flow as curves and not a single rating, 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 G-series as performance curves rather than a single rated figure, so we do not quote one number here. Tell us your inlet pressure, set pressure and required air consumption, and we will confirm the flow from the datasheet curves for this exact unit before you order.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released by opening the drain when an operator services the unit, rather than by an automatic or differential-pressure mechanism. It is the right choice where the machine is visited on a regular maintenance round; if the installation is unattended, ask us about the same series with an automatic or differential-pressure drain.
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.