The AirTAC GFR400C15ALJF2WTK AirTAC Filter Regulator NPT1/2, 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 GFR400C15ALJF2WTK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 configuration has a 1/2 in NPT port, a 5 um filter element (code W), an automatic drain, and the low-pressure regulator type. It is fitted with an embedded square gauge reading in psi and a reverse/check valve, and it comes without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl on this unit is metal.
This is a genuine AirTAC part. The GFR series is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, in PT, G (BSPP) or NPT threads, with differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) elements, gauge or no-gauge builds, and bracket options. Flow for the series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15ALJF2WTK AirTAC Filter Regulator NPT1/2, 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) |
Regulating supply air down to the reduced working pressure needed by gripper and capper cylinders, while the 5 um element strips water and debris before it reaches the valve seals.
Feeding swing clamps and support cylinders on a machining fixture with filtered, regulated air, with the reverse/check valve helping hold the circuit if upstream supply is interrupted.
A single-body filter regulator mounted at the machine inlet ahead of directional valves, with the automatic drain handling condensate so the unit can sit where daily manual draining is impractical.
Size the unit by port and demand: this is the size 400 frame with a 1/2 in NPT port; the smaller 200/300 and larger 600 frames step the port and flow capacity down or up. Because flow is published as curves and not as a single rating, ask us to confirm sizing against your application before ordering. Other real, decodable choices in this series: drain type (differential-pressure default, automatic, or manual), filter element (40 um standard or 5 um with code W), gauge scale in MPa, psi or bar, thread (PT is the standard; G/BSPP and NPT are order options), and bracket or no bracket. This configuration is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us if your set pressure is critical.
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, not as a single rated figure, so there is no honest one-number answer to quote. Tell us your application and we will confirm the datasheet flow figures and check the sizing for you on request.
The automatic drain expels collected condensate from the metal bowl on its own, which suits installations that are not checked daily; the alternatives in the series are the differential-pressure default drain and a manual drain. The 5 um element (code W) is a finer grade than the 40 um standard element, chosen where downstream components are sensitive to finer particulate. Note the unit is rated for -5 to 70 C, non-freezing.
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.