The AirTAC GFR400C10MLJF2G AirTAC Filter Regulator G3/8, 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 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 GFR400C10MLJF2G is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This configuration is the low-pressure type, intended for circuits that hold a reduced working pressure rather than full line pressure. It has a G3/8 (BSPP) port, the 40 um standard filter element, a manual drain on the metal bowl, an embedded square gauge reading in psi, and is supplied without a mounting bracket or reverse/check valve.
It is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C (non-freezing) operation. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus choices of drain type, 5 um filtration (code W), gauge scale and G or NPT thread. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR400C10MLJF2G AirTAC Filter Regulator G3/8, Low-Pressure |
|---|---|
| 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) |
Weaving and knitting lines run air jets, tension rollers and light actuators at reduced pressure. The GFR400 filters the mill air supply to 40 um and holds the lower setting the loom controls expect, with the psi gauge giving operators a local readout at the machine.
Bench test rigs and lab pneumatic circuits usually need a reduced, steady supply rather than full header pressure. This low-pressure filter regulator conditions the air to 40 um before it reaches instruments, small cylinders or test fixtures, and the manual drain is cleared during routine rig checks.
Bag sealers, flap tuckers and product diverters on a packaging conveyor use light-duty cylinders that run best below main header pressure. The GFR400C10MLJF2G filters and steps the air down at the station, and the manual drain lets maintenance clear collected water at shift checks.
Size the unit by port and expected air demand: this model steps up to G3/8 (3/8 in) in the size-400 body, and the G series runs from 1/8 to 1 inch across sizes 200 to 600, so move up a size when the circuit draws more air. The drain here is manual, meaning an operator opens the bowl drain during routine checks; automatic and differential-pressure drains are available if manual draining cannot be scheduled. Filtration is the 40 um standard element, with 5 um (code W) for finer protection. The fitted square gauge reads psi, with MPa or bar scales and an external round gauge as options. The thread is G (BSPP); PT is the catalogue standard and NPT can be ordered. No mounting bracket is fitted. Because flow is published as curves rather than one rated figure, send us your application details and we will confirm sizing from 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 GFR400 as curves rather than a single rated figure, so we do not quote a number here. Send us your application details - available inlet pressure, downstream demand and acceptable pressure drop - and we will confirm the sizing from the datasheet on request.
The M in the code specifies a manual drain: water collected in the metal bowl is released by opening the drain during routine checks. If manual draining does not suit your maintenance schedule, GFR400 units can be ordered with an automatic or a differential-pressure drain instead - just tell us which you need when ordering.
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.