The AirTAC GFR400C15ALJF1WTK AirTAC Filter Regulator NPT1/2 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 GFR400C15ALJF1WTK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in one body. This size 400 unit has a 1/2 in NPT port, a 5 um filtering element (code W), an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type for set points below the standard range. A square pressure gauge scaled in MPa is fitted, a reverse/check valve is installed, and no mounting bracket is included (code J). Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating 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 in to 1 in, PT (standard), G or NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um elements, and gauge options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application on request.
| Model | GFR400C15ALJF1WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Conditioning the compressed air feeding cylinder-driven mechanisms on a weaving or spinning line, where a low regulated set point is wanted and the automatic drain clears condensate through long production runs.
Supplying filtered, pressure-regulated air to clamping cylinders on a small press or workholding fixture, keeping water and swarf out of the valves while holding a low set point at the clamp.
Air preparation for diverters, pushers and gripper cylinders on a packaging conveyor, with the 5 um element protecting downstream components and the auto drain handling condensate between shifts.
Choose the size by port and required flow: this 400 unit carries a 1/2 in NPT thread, with G and PT available as order options. The 5 um element suits air that must be cleaner than the 40 um standard. The automatic drain suits unattended installations; manual and differential-pressure drains are catalogue alternatives in the family. The low-pressure regulator type is intended where the set point sits below the standard range - the exact range is not published, so confirm it with us before ordering. The fitted gauge is the embedded square type scaled in MPa (psi and bar scales exist, and an external round gauge is optional). No mounting bracket is included with the J code. Because flow is published as curves, not a single rating, 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.
Flow for the GFR400 series is published as curves, not as a single rated figure, so we do not quote a number here. Send us your application details - port size, downstream demand and set point - and we will confirm the flow and sizing from the AirTAC datasheet on request.
The A code in this model means an automatic drain: collected condensate is expelled from the bowl without manual attention, which suits unattended installations. The GFR400 family is also available with a manual drain (code M) or the differential-pressure drain (blank) as catalogue 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.