The AirTAC GFR400C10ALJF2G 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 GFR400C10ALJF2G is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a G3/8 (BSPP) port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, and the low-pressure regulator type for circuits that run at reduced set pressures. The fitted square gauge reads in psi, mounted in the body; no external bracket is included and no reverse/check valve is fitted. 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 from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the series you can order manual or differential-pressure drains, a 5 um element (code W), different gauge scales, G or NPT threads, and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C10ALJF2G 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) |
On a machining cell where pneumatic clamps must hold at a reduced set pressure to avoid distorting thin-walled workpieces, this filter regulator cleans the supply air and holds the lower setting, with the psi gauge giving the operator a direct reading at the fixture.
Bag-sealing jaws, diverters and pusher cylinders on a packaging conveyor need air free of water and debris and regulated to a moderate pressure. This unit, mounted at the line drop with its automatic drain handling condensate, conditions the supply for those actuators.
A coating or spraying station in a lab or small production booth needs clean, moisture-free air delivered at a stable low pressure for consistent finish. This filter regulator provides the filtration and low-pressure regulation stage ahead of the spray applicator.
Start with the size and port: this unit is size 400 with a 3/8 in port, one step up from size 300 - choose the size whose flow curve covers your consumption rather than matching port size alone. The drain here is automatic, which suits unattended duty; manual and differential-pressure drains are the alternatives on this family. The element is the 40 um standard; specify the 5 um grade (code W) if downstream equipment needs finer filtration. The gauge is the embedded square type reading psi; MPa or bar scales and an external round gauge are order options. Thread is G (BSPP) here, with PT as the catalogue standard and NPT available - all are specification choices to order, not delivery terms. The low-pressure regulator type is selected where the circuit operates below standard set ranges; the exact adjustment range for this type is not published, so confirm it with us. No bracket is included with this code. Because flow is published as curves and not a single rated figure, send us your application parameters and we will confirm sizing against the datasheet before you order.
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 this series as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number here. Send us your application details and we will confirm the flow and full datasheet figures for this exact model on request, so you can size it against your consumption before ordering.
The A in the code specifies an automatic drain: collected condensate is expelled from the bowl without anyone opening it, which suits installations that run unattended or in humid conditions. The GFR family is also available with a manual drain or the differential-pressure default drain - just order the corresponding code variant if you prefer one of those.
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.