The AirTAC GFR40015AF2WK AirTAC Filter Regulator PT1/2, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a automatic 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 GFR40015AF2WK is a size 400 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This configuration is built around a PT1/2 (1/2 in) port, a 5 um filter element (the finer of the two catalogue grades), an automatic drain that expels collected condensate without manual attention, and a square pressure gauge reading in psi. A reverse/check valve is fitted, a mounting bracket is included, and the polycarbonate bowl suits the non-freezing -5 to 70 C operating range, with a maximum inlet pressure of 1.0 MPa (145 psi). As a standard-type regulator with automatic drain, its adjustment range is 0.15-0.9 MPa (20-130 psi).
This is a genuine AirTAC part from the GFR400 series. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including manual or differential-pressure drains, a 40 um standard element, alternative gauge scales (MPa, psi, bar) and G or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015AF2WK AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding a 1/2 in air supply to a pneumatic press or clamping fixture, where the 5 um element protects directional valves from particulates and the regulator holds a set clamping pressure while the automatic drain keeps condensate out of the circuit.
Conditioning the supply air on a packaging or cartoning line: the filter-regulator cleans and sets line pressure for seal cylinders and vacuum generators, and the psi gauge lets operators verify setpoint at a glance during changeover.
Prepping shop air for a CNC machining centre's tool-change and coolant-spray circuits, where the check valve holds downstream pressure if the main supply dips and the automatic drain handles moisture from long production runs.
Start with the port and size step: this unit is size 400 with a PT1/2 port, one step up from the 300 series, so choose it when your line's flow demand sits above what a 3/8 in unit carries - we will confirm the exact curve against your consumption. Drain type is a real choice: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure draining suits lines where you want condensate expulsion tied to flow. Filter grade is 5 um here versus the 40 um standard - pick 5 um when downstream valves and cylinders need finer protection. Gauge scale is psi on this unit; MPa and bar scales are orderable. Thread is PT standard, with G (BSPP) and NPT as order options, and a mounting bracket is included.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Send us your working pressure and air consumption and we will confirm the datasheet curve and the right size for your application on request.
The code spells both out: W is the 5 um element (the 40 um element is the standard grade) and A is the automatic drain, which expels collected condensate on its own instead of relying on the default differential-pressure action or a manual drain. Choose the 5 um grade when downstream valves and actuators need finer filtration, and automatic drain when the unit sits where manual draining is impractical.
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.