The AirTAC GFR400C10MLJNT AirTAC Filter Regulator NPT 3/8 in 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 GFR400C10MLJNT is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built as a size 400 unit with a 3/8 in NPT port, a manual drain, the standard 40 um filter element, the low-pressure regulator type, no gauge fitted, no mounting bracket and no reverse/check valve. In service, the polycarbonate bowl drops out water and debris and is emptied by hand, while the low-pressure regulator type holds a reduced set pressure for circuits that run below what the standard type is intended for. 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 is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, an optional 5 um element (code W), gauge and bracket options, and PT, G or NPT threads. AirTAC publishes flow for this family as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR400C10MLJNT AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
Conditioning point for the air feed to labeling-head cylinders on a bottling line: water and compressor debris collect in the bowl and are drained by hand on a service round, while the low-pressure regulator holds the reduced set pressure the labeling actuation circuit is tuned to.
Air preparation for diverter and gate cylinders on a parcel-sortation conveyor: the 3/8 in NPT connection slots into the line drop, the 40 um element keeps debris out of valve spools, and the manual drain is emptied during shift checks.
Supply conditioning for clamp and hold-down cylinders on an automotive weld fixture: the filter regulator sits at the fixture drop, removes water that would cause sticking, and regulates the clamping circuit at its lower set pressure without needing a separate filter and regulator body.
Size and port step up together across the family (200/300/400/600), so pick the size whose flow curve covers your consumption - ask us to check it against the datasheet before ordering. Drain choice matters: this unit has a manual drain, which suits positions someone can reach on a service round; automatic and differential-pressure drains are available where the bowl should empty itself. The standard element is 40 um; specify code W for 5 um where finer particulate removal is needed. This example is the low-pressure regulator type with no gauge and no bracket; gauge options (embedded square, or external round, with MPa, psi or bar scales) and brackets can be added, and the thread can be ordered as PT (the standard), G or NPT. Because flow is published as curves, not a single rating, send us your application details and we will confirm sizing 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 family as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your port size, working pressure and air consumption and we will confirm the flow from the datasheet for this exact model before you order.
The M in the code sets a manual drain: the bowl is emptied by hand at service intervals. If the installation cannot be reached regularly, the same GFR400 body can be ordered with an automatic or differential-pressure drain instead, and the regulation range differs by drain type - we confirm the exact figures for the low-pressure type on request.
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.