The AirTAC GFR400C10ALJC2WK 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 GFR400C10ALJC2WK is a filter regulator: one body removes water and particulate from compressed air and reduces pressure in a single stage. This size 400 unit is built for a 3/8 in PT port and is the low-pressure type (code L), intended for circuits that run at reduced working pressure. It carries a 5 um filter element (code W, against the 40 um standard), an automatic drain that expels collected condensate without manual attention, an external round pressure gauge reading in psi, and a reverse/check valve (code K) that holds downstream pressure if the supply dips. No mounting bracket is included (code J). 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. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and can be ordered with manual or differential-pressure drains instead of the automatic drain fitted here, 40 um or 5 um elements, embedded square or external round gauges in MPa, psi or bar scales, and G (BSPP) or NPT threads in place of PT. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400C10ALJC2WK 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) |
Filtering and reducing air to a low working pressure for pneumatic clamps on a carton-sealing line, with the automatic drain keeping condensate out of the clamp cylinders.
Supplying cleaned, reduced-pressure air to gauges and test fixtures on a quality bench, where the 5 um element protects sensitive instrumentation and the psi gauge gives a direct read.
Regulating supply to the air cylinders that raise gates and diverters on a bottling conveyor, with the reverse/check valve holding downstream pressure through supply dips.
The real, decodable choices on this family: step the size (200/300/400/600) and port (1/8 to 1 in) against the flow your line needs; choose the drain - differential-pressure (default), automatic as fitted here, or manual; pick the filter grade, 40 um standard or 5 um with code W; choose the gauge, embedded square as standard or external round, scaled in MPa, psi or bar; thread is PT as standard with G (BSPP) and NPT as order options; a bracket is included unless code J is specified. On regulation, the low-pressure type (code L) is a distinct variant - confirm its exact adjustment range with us before ordering. Flow is published only as curves, not a single rating, so send us your flow and pressure requirements 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 GFR400 flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your required flow and working pressure and we will confirm sizing from the datasheet on request.
Code L marks the low-pressure regulator variant, intended for circuits that run at reduced pressure rather than the standard setting range. Its exact adjustment range is not published in the material we hold, so confirm it with us. Per the rest of the code, this unit also carries a 5 um element, automatic drain, round psi gauge and a reverse/check valve.
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.