The AirTAC GFR40015AF1WTK AirTAC Filter Regulator NPT1/2 5um 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 GFR40015AF1WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size 400 unit has a 1/2 in NPT port, a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that discharges collected condensate without manual attention, an embedded square pressure gauge scaled in MPa, and a built-in reverse/check valve that holds the downstream setting if upstream supply is interrupted. The polycarbonate bowl is standard at this size, and the mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range with automatic drain is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT as order options) and bracket. Flow for this series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet and flow-curve figures for your application on request.
| Model | GFR40015AF1WTK AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT 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, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Feed clean, regulated air to the tool-change clamps and pneumatic actuators on a machining centre, with the 5 um element protecting spool valves from fine particulate and the automatic drain handling condensate at an unattended cell.
Mount at the inlet of a robot gripper or weld-clamp control panel: the regulator holds a steady setting for gripper pressure, the check valve keeps that setting through supply dips, and the square MPa gauge gives the panel a local reading.
Supply the sealing jaws, diverters and pushers on a packaging conveyor line, where the automatic drain copes with moisture carry-over from a long header and the 5 um grade suits the pilot valves cycling at high rates.
Work from the size and port first: GFR400 with a 1/2 in port sits in the upper half of the range (200/300/400/600), so step up or down according to the air demand of the circuit rather than the pipe alone. Choose the drain to match the installation: automatic (this unit) suits points where nobody opens the bowl regularly; manual suits attended stations; differential-pressure drain is the catalogue default. Choose the 5 um element (code W) where downstream valves and instruments need finer filtration than the 40 um standard. The square gauge is fitted here with an MPa scale; an external round gauge and psi or bar scales are available. This unit is NPT threaded; PT is the catalogue standard and G (BSPP) is also an order option. A bracket is included. Because flow is published as curves and 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. 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 figure, so we do not quote a number. Tell us your application and we will confirm the datasheet and flow-curve figures on request so you can size the unit correctly.
The W in the code selects the optional 5 um filter element, finer than the 40 um standard, for circuits with sensitive valves or instruments. The A selects the automatic drain, which ejects collected condensate on its own - useful where the unit is not checked daily. Manual drain and the differential-pressure default are available on other GFR400 variants if you prefer.
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.