The AirTAC GFR400C15AF3WT 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 AirTAC GFR400C15AF3WT is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit has 1/2 in NPT ports, the 5 um filter element, and an automatic drain that expels collected condensate without operator attention. The embedded square gauge reads in bar, and the standard-type regulator adjusts from 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). Operating temperature is -5 to 70 C (non-freezing), and the bowl on this size is PC (polycarbonate).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), 40 um standard or 5 um filtration, gauge and thread options, and optional brackets. Flow for this unit is published as performance curves rather than a single rating, so ask us to confirm the datasheet figures against your application before ordering.
| Model | GFR400C15AF3WT 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) |
Feeding clean, pressure-set air to the directional valves and cylinders of a clamping or press station, where the 5 um element protects pilot valves and the regulator holds a consistent setpoint cycle after cycle.
Conditioning shop air ahead of spray guns on a paint line: the 5 um grade strips finer particulate that would mar a finish, while the regulator sets the atomizing pressure the booth recipe calls for.
Supplying filtered and regulated air to the grippers, diverters and stop cylinders on a packaging conveyor, with the automatic drain keeping condensate out of the valves on a line that runs unattended.
Size 400 with 1/2 in ports sits in the upper half of the GFR range; step between sizes 200/300/400/600 according to the flow your line needs. This unit carries the automatic drain, so condensate is ejected without operator attention; manual and differential-pressure drains are available if you prefer those instead. The W code selects the 5 um element rather than the 40 um standard - choose 5 um where downstream pilot valves, instruments or spray equipment need finer particulate removal. The fitted gauge reads in bar; MPa and psi scales, or an external round gauge, can be ordered. Thread here is NPT; PT is the standard and G (BSPP) is a catalogue option. Mounting bracket included. 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.
AirTAC publishes GFR400 flow as performance curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure and the flow your application needs, and we will confirm against the datasheet whether this 1/2 in filter regulator is correctly sized before you order.
The W code in GFR400C15AF3WT orders the optional 5 um filter grade instead of the 40 um standard. Choose 5 um where downstream pilot valves, air tools, spray guns or instruments need finer particulate removal; it filters water and particulate in the same filter-regulator body. The automatic drain and the bar-scale gauge are independent choices you can also order differently.
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.