The AirTAC GFR400C15ALJF2W AirTAC Filter Regulator PT1/2, 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 GFR400C15ALJF2W is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body, size 400 with a PT1/2 (1/2 in) PT-threaded port. This configuration carries a 5 um filter element (the finer of the two published grades), an automatic drain that ejects collected condensate without manual attention, a metal bowl, and a low-pressure regulator type with an embedded square gauge reading in psi. No mounting bracket is included and no reverse/check valve is fitted.
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, and options that include 40 um or 5 um filtration, differential-pressure, automatic or manual drains, square or round gauges with MPa, psi or bar scales, G or NPT threads, and brackets. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Because flow is published as curves rather than a single rating, we confirm datasheet and sizing figures on request.
| Model | GFR400C15ALJF2W AirTAC Filter Regulator PT1/2, 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) |
Feeds paint spray guns on a finishing line: the 5 um element strips water and grit that cause finish defects, while the low-pressure regulator holds the reduced gun supply at a steady setting and the psi gauge gives the operator a local readout.
Supplies the low-pressure cylinders and sealing actuators on a carton-sealing machine, with the automatic drain keeping condensate out of the valve stack through long production shifts.
Sits ahead of the air knives on a bottle-drying conveyor, filtering the supply and regulating it down to the low pressure the knife manifold needs, with the automatic drain handling moisture carried over from the compressor.
The real choices within GFR are the size and port step (200 through 600, 1/8 in to 1 in), matched to the flow your line needs - we check that against the published curves before you order. Drain type matters: automatic (as fitted here) suits unattended duty, manual suits periodic checks, and differential-pressure is the catalogue default. Filter grade is 40 um standard or 5 um (code W, fitted here) for finer protection downstream. Gauge scale can be MPa, psi or bar; thread is PT as standard with G and NPT as order options; a bracket is optional and not included in this code. The low-pressure regulator type in this configuration has no published adjustment range, so confirm your set pressure with us 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.
AirTAC publishes GFR flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet on request.
W is the catalogue code for the 5 um filter element, finer than the 40 um standard. L marks the low-pressure regulator type; its exact adjustment range is not published, so confirm your set pressure with us before ordering. A is the automatic drain, and F2 is the embedded square gauge with a psi scale. The port is PT1/2 with a PT thread; G and NPT threads are order 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.