The AirTAC GFR400C15ALJC2WK AirTAC Filter Regulator PT1/2 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 GFR400C15ALJC2WK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is fitted with a 1/2 in PT port, a fine 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator type for applications set below standard ranges. A reverse/check valve is fitted, an external round gauge on a psi scale is included, and the unit is supplied without a mounting bracket. 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 options from 1/8 in to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, gauge styles and scales, PT, G or NPT threads, and optional brackets. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15ALJC2WK AirTAC Filter Regulator PT1/2 |
|---|---|
| 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) |
Fixture clamps and hold-down cylinders that are set to hold workpieces at reduced pressure get both clean air and a stable low-pressure setting from this filter regulator, with the psi gauge giving the operator a direct readout at the cell.
Packaging lines running baggers, sealers and carton closers use this unit ahead of valve and cylinder banks: the 5 um element protects directional valves from particulate and the automatic drain keeps condensate out of the circuit during long runs.
Test benches and lab rigs that feed air to instruments, actuators or sample fixtures at low, repeatable pressures use this unit at the bench supply, with the check valve holding the setting and the round psi gauge allowing fine adjustment.
Start with the port and size: this unit is 400 size with a 1/2 in PT port, one step up from 3/8 in and one below 3/4 in - match the step to the air consumption of the circuit. The 5 um element (W code) suits downstream equipment that needs finer filtration than the 40 um standard element; choose 40 um where general protection is enough. The automatic drain keeps the bowl empty without operator attention - choose manual where you prefer controlled draining or the unit sits in a tight space. The low-pressure regulator type is intended for settings below the standard range; the exact setting range for this variant is not published, so confirm it with us before ordering. The round psi gauge is fitted; embedded square gauges with MPa, psi or bar scales are the standard alternative. PT is the standard thread; G (BSPP) and NPT are order options. A bracket is not included with this code but is available on other variants.
Flow for the GFR series is published as curves, not a single rating, so send us your flow and pressure requirements 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 the GFR series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Tell us your working pressure and air consumption and we will confirm the sizing against the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl on its own - useful on unattended or continuously running equipment. The GFR series is also available with a manual drain or the differential-pressure (default) drain; just ask for the matching code.
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.