The AirTAC GFR400-10LJC2G AirTAC Low-Pressure Filter Regulator G3/8 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 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 GFR400-10LJC2G is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This 400-size unit is built with a G3/8 female port, a 40 um standard filter element and a differential-pressure drain, the default drain option that discharges collected condensate without manual intervention. It is the low-pressure type (code L), set up for circuits that run below the standard adjustment band. A round external gauge with a psi scale is fitted, the bowl is polycarbonate as fitted on the 400 size, and no mounting bracket is included (code J). 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 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, and can be ordered with automatic or manual drains, a 5 um element (code W), embedded square or external round gauges in MPa, psi or bar scales, PT, G or NPT threads, and a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400-10LJC2G AirTAC Low-Pressure Filter Regulator G3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| G | G (BSPP) 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) |
Filtering and regulating the low-pressure feed to carton-sealing and labeling heads on a packaging machine, with the fitted round psi gauge letting operators read the set pressure at a glance.
Conditioning the air feeding low-pressure clamping fixtures on a CNC machining cell, where the 40 um element keeps water and particulate out of the fixture's directional valves.
Supplying filtered, regulated air to low-pressure diverter and stopper cylinders on a distribution conveyor, with the differential-pressure drain keeping condensate out of the line.
The real, decodable choices on this family are: size and port (200/300/400/600 with ports from 1/8 to 1 inch - step up a size where the circuit needs more flow); drain type (differential-pressure as fitted here, automatic with code A, or manual with code M); filter grade (40 um standard as here, or 5 um with code W); gauge (embedded square as standard, or external round in MPa, psi or bar scales - this unit carries a round psi gauge); thread (PT is the standard, with G and NPT as order options - this unit is G); and bracket (code J omits it). This is the low-pressure type, whose exact adjustment range is not published as a single figure, so confirm your set pressure with us. Flow is published as curves, not a single rating, so ask us to confirm sizing against the 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.
Flow for the GFR400 is published as curves, not as a single rated figure, so we do not quote a rated flow number. Send us your application's flow and pressure requirements and we will confirm sizing from the AirTAC datasheet on request.
The L marks the low-pressure regulator type, intended for circuits set below the standard adjustment band; the exact range is not published, so tell us your set pressure and we will confirm suitability. This unit carries a round external gauge with a psi scale, uses the default differential-pressure drain, and has a 40 um filter element in a polycarbonate bowl.
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.