The AirTAC GFR400C10ALJF2GK 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 AirTAC GFR400C10ALJF2GK is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 400 unit has a G3/8 (BSPP) port, an automatic drain that discharges collected condensate without manual attention, a 40 um standard filter element, the low-pressure regulator type, an embedded square gauge reading in psi, and a built-in reverse/check valve. The polycarbonate bowl suits non-freezing compressed-air service from -5 to 70 C, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and catalogue options include manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, G or NPT threads, and a mounting bracket (this unit is supplied without one). Rated flow is published as curves rather than a single figure, so ask us to confirm flow and datasheet details for your application.
| Model | GFR400C10ALJF2GK 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) |
Filtered, regulated air for pneumatic clamps and swing cylinders on a machining-cell fixture, holding a steady low-pressure setting downstream of the shop compressor.
Clean, regulated supply for stopper and pusher cylinders on a bottling or carton conveyor, with the automatic drain handling condensate through shift changes.
Low-pressure pilot air for solenoid valves and small actuators on a laboratory or pilot-plant test rig, with the psi gauge giving a direct local setting.
Choose the size by port and required flow: size 400 with a G3/8 port sits mid-range in the GFR line, one step above 300 and below 600. Drain type is a real choice: this unit carries an automatic drain, while manual and differential-pressure drains are also available. Filter grade is 40 um standard; specify 5 um (code W) where finer particulate removal matters. The embedded square gauge here reads psi; MPa and bar scales and an external round gauge are options. Thread is G (BSPP); PT is the standard thread and NPT is an order option. A mounting bracket can be ordered if you need panel fixing. 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 flow for the GFR series as curves rather than a single rated figure, so we do not quote a number here. Ask us to confirm the flow curve and datasheet figures for this size 400, G3/8 unit against your application before ordering.
The L in the code marks the low-pressure regulator type. Its exact adjustment range is not published in the material we hold, so confirm it with us on request. The embedded square gauge on this unit reads in psi; MPa and bar scales are available as options.
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.