The AirTAC GFR400C10MLJC2WG AirTAC Filter Regulator G3/8, 5 um 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 GFR400C10MLJC2WG is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a drain bowl but no lubricator. This configuration is built with G3/8 (BSPP) ports on the size-400 body, a 5 um filter element (code W, against the 40 um standard), a manual drain, the low-pressure regulator type (code L), a round pressure gauge reading in psi, G thread, no mounting bracket and no reverse/check valve. The round gauge gives a local pressure readout at the point of use, and the manual drain means the bowl is emptied by hand as part of routine maintenance.
It is a genuine AirTAC part, rated for compressed air at up to 1.0 MPa (145 psi) inlet and -5 to 70 C (non-freezing), with a metal bowl. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and drain, filter-grade, gauge, thread and bracket options to match. Flow figures are published as curves rather than a single rating, so we confirm the datasheet numbers for your operating point on request.
| Model | GFR400C10MLJC2WG AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| 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) |
Feeding the air clamps and swing cylinders of a machine-tool fixture that must hold at a low, stable pressure below the main line setting, with 5 um filtered air helping protect the valve and cylinder seals.
Point-of-use regulation for spray guns and atomising air on a paint or coating line, where the low-pressure regulator type is selected specifically because the process calls for gentle set points rather than full line pressure.
Supplying pilot air to the pneumatic divert and fill valves on a filler, with the round psi gauge giving the maintenance team a local readout in the pressure units they already work in.
Size 400 with G3/8 ports sits in the middle of the GFR range (sizes 200/300/400/600, ports 1/8 in to 1 in); step up or down a size if the flow curves for your demand say so - we can check that against the datasheet on request. This unit is configured with a 5 um element (the 40 um standard element is the alternative without the W code), a manual drain (automatic and differential-pressure drains are the other catalogue options), the low-pressure regulator type, and a round gauge reading in psi (the embedded square gauge in MPa, psi or bar scales is the standard alternative). Thread is G; PT is the standard thread and NPT is an orderable option. No mounting bracket is fitted, but brackets are a catalogue option. Because flow is published as curves rather than 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The M in the code selects a manual drain: the bowl is emptied by hand as part of routine maintenance, instead of using the automatic or differential-pressure drain options. The L selects the low-pressure regulator type; its exact adjustment range is not published in the catalogue, so ask us to confirm it against your set point 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.