The AirTAC GFR400C10ALJC2W AirTAC Filter Regulator 3/8 in PT 5 um 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 GFR400C10ALJC2W is a size 400 filter regulator: water and particulate removal plus pressure regulation combined in a single body. This configuration carries a 5 um filter element (the finer W grade, against the 40 um standard), an automatic drain that ejects collected condensate without manual attention, and a low-pressure regulator type for applications set below the standard range. It is fitted with the optional external round gauge reading in psi, and it comes without a mounting bracket (J code) and without a reverse/check valve. The port is PT3/8 (3/8 in, PT thread as the standard; G and NPT are order options). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The size 400 bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread (PT, G or NPT), bracket and check valve. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures against your application before ordering.
| Model | GFR400C10ALJC2W AirTAC Filter Regulator 3/8 in PT 5 um |
|---|---|
| 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) |
A spray line needs clean, dry air at a low, steady set pressure so the atomising air stays consistent. The 5 um element catches fine particulate ahead of the gun, the automatic drain keeps condensate off the finish, and the low-pressure regulator holds the gentle setting the booth calls for.
Clamp and hold-down cylinders on cartoning and case-packing machines often run at low set pressures to avoid crushing product. This filter regulator conditions the supply, drains itself automatically between shifts, and the round psi gauge lets an operator verify the setting at a glance.
Pilot-air and signal circuits on food, textile and general process lines feed sensitive actuators that must not see full line pressure. Feeding them through this unit gives 5 um filtration, automatic moisture draining and a low regulated supply, with the psi gauge confirming the pilot setting.
Step through the real choices before ordering. Size: 200, 300, 400 or 600 sets the port and the flow capacity - step up a size if your line draws more air, but match the port to your piping (this unit is 3/8 in PT). Drain: automatic (this unit) suits unattended duty; manual suits periodic checks; differential-pressure is the default. Filter grade: 40 um is standard, 5 um (W, this unit) protects finer downstream components. Gauge: the embedded square gauge is standard; this unit adds the optional external round gauge in psi (MPa and bar scales also available). Thread: PT is standard, G (BSPP) and NPT are order options. Bracket: this unit omits it (J); order a bracketed variant if you panel- or wall-mount. One honest note: AirTAC publishes flow as curves, not a single rated number, so send us your flow and pressure requirement and we will confirm sizing from 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 the GFR series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your required flow and working pressure and we will confirm the correct size from the datasheet on request before you order.
The A code fits an automatic drain, so collected condensate is ejected without anyone opening the bowl - useful on unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives in the family. The L code makes this a low-pressure regulator type, intended for settings below the standard range; the exact set-pressure window for the low-pressure type is not published on our sheet, so confirm it with us on request.
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.