The AirTAC GFR40010LJC2GK 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 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 GFR40010LJC2GK is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body for compressed air. It removes water and particulate with the standard 40 um element, drains collected condensate automatically through the differential-pressure drain, and regulates downstream pressure as a low-pressure type unit. This configuration carries a G3/8 (BSPP) port, a round pressure gauge reading in psi, and a built-in reverse/check valve that holds the downstream circuit when upstream supply is lost. It ships without a mounting bracket.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, thread choices of PT, G and NPT, manual or automatic drain variants, a 5 um (code W) filter element option, and gauge scale choices. Flow is published as curves rather than a single rated figure, so we confirm the datasheet figures for your application on request.
| Model | GFR40010LJC2GK AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| 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 | Fitted (reverse flow permitted) |
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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Filtered, regulated air at reduced pressure for conveyor stopper and pusher cylinders on a bottling line, with the check valve holding position during brief supply interruptions.
Supplying clean, low-pressure air to pneumatic clamps and swing cylinders at an assembly workstation, where the 40 um element protects seals from water and swarf.
Conditioning the supply to yarn-threading jets and low-pressure actuator circuits on textile machinery, with differential-pressure drainage handling condensate during long runs.
Size up by port and required flow: this 400-size unit takes a 3/8 inch port; step to 600 for larger lines or down to 300/200 for compact circuits. The differential-pressure drain here bleeds condensate away with flow, while automatic (A) and manual (M) drain variants are available if your duty cycle suits them better. The standard 40 um element suits general protection; specify the W code for the 5 um element where finer filtration is needed. Gauge scale can be MPa, psi or bar, and thread can be ordered as PT (standard), G or NPT. Bracket options apply per code. Flow is published as curves, not a single rating, so 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so no single number is quoted here. Tell us your line pressure, downstream pressure setting and expected air demand, and we will confirm the sizing from the datasheet curves before you order.
The L in the code marks this as the low-pressure regulator variant of the GFR400, intended for circuits regulated well below the standard range. The exact adjustment range for this variant is not published in our sheet, so confirm your set pressure with us and we will verify suitability from the datasheet. Maximum inlet pressure remains 1.0 MPa (145 psi).
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.