
The AirTAC AirTAC GFR400-10 Filter Regulator (GFR40010LJC1) 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.
GFR40010LJC1 is an AirTAC G-series filter regulator: filtration and pressure regulation combined in one body. This decode is the 400 frame with a 3/8 in PT port, in the low-pressure type, with the standard 40 um element and the default differential-pressure drain. The J in the code means the mounting bracket is omitted, and C1 specifies the external round pressure gauge with an MPa scale. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature window is -5 to 70 C (non-freezing), and the adjusted outlet range for a differential-pressure drain unit is 0.15-0.9 MPa (20-130 psi).
This is a genuine AirTAC part from a family that spans 200, 300, 400 and 600 frames, with PT, G (BSPP) or NPT threads, 40 um standard or 5 um fine elements, differential-pressure, automatic or manual drains, and square or round gauges in MPa, psi or bar scales; the 400 bowl is polycarbonate. AirTAC publishes flow as curves rather than a single rated figure, so ask us and we will confirm the datasheet for your application on request.
| Model | AirTAC GFR400-10 Filter Regulator (GFR40010LJC1) |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT 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, MPa 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. |
| 1 | Gauge scale: MPa. 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a bottling hall conveyor system, the unit regulates the air feeding stop-gate and divert cylinders, keeping gate timing stable as header pressure moves during peak demand.
At a spinning or weaving frame, the filter regulator conditions plant air for thread-tension cylinders and small air cylinders, trapping condensate before it reaches the valve bank.
On a maintenance shop air bench, it gives technicians a local, readable set-point for cylinders, air chucks and pneumatic test fixtures without walking back to the main FRL.
Use the 200/300/400/600 frame step to match port and air demand; 400 carries a 3/8 in PT port here. Drain choice comes next: differential-pressure (this code) runs unattended, automatic drains continuously, manual suits intermittently used lines and widens the adjusted range to 0.05-0.9 MPa (7-130 psi). The 40 um element is the standard grade for general plant air; specify W for 5 um fine filtration. This code omits the bracket (J), which suits bodies screwed directly into a manifold or line, and fits the external round gauge scaled in MPa - square embedded gauges, and psi or bar scales, are alternatives. PT is the standard thread, with G (BSPP) and NPT orderable as catalogue options. 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. 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 characteristic curves rather than one rated figure, so we do not state a single number. Share your line pressure, downstream demand and allowable pressure drop, and we will confirm the datasheet curve and correct sizing on request.
J means the mounting bracket is omitted from this unit, so it is supplied without one for direct in-line or manifold mounting; a code without the J includes the bracket. C1 specifies the external round pressure gauge with an MPa scale instead of the embedded square gauge.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.