The AirTAC GFR40015ANWTK AirTAC Filter Regulator NPT1/2, 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 GFR40015ANWTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/2 in NPT port, a 5 um filter element (the finer W grade, versus the 40 um standard), an automatic drain that ejects collected condensate without manual attention, and a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi). A reverse/check valve is fitted, and no gauge is supplied with this code. The polycarbonate bowl suits the 400 size frame (only the 600 size uses an aluminium alloy bowl), maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing. A mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator line is available in sizes 200, 300, 400 and 600 with correspondingly larger ports, in PT (standard), G and NPT threads, with differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, optional gauges, and optional reverse/check valves. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015ANWTK AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (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. |
| 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) |
Placed ahead of a CNC machine tool's pneumatic circuit, this filter regulator cleans condensate and swarf-laden shop air through the 5 um element and holds a steady regulated pressure to the machine's directional valves and tool-clamp actuators, with the automatic drain clearing the bowl between shifts.
On a carton-forming and sealing line, the unit feeds the machine's cylinders and vacuum-assist clamps with filtered, regulated air at a set pressure, keeping seal arms and product pushers consistent through long production runs while the auto drain manages condensate from the compressor ring main.
Mounted at the cell supply, the regulator sets the working pressure for pneumatic grippers and clamp cylinders on the robot end effector, and the 5 um element protects the small control valves on the tool changer, with the reverse/check valve helping hold downstream pressure if supply is interrupted.
Size up through the GFR range by port and expected demand: this 400 size with its 1/2 in NPT port suits lines with substantial air consumption, while 200/300 sizes cover lighter duty. Because flow is published as curves and not a single rated figure, send us your required flow and we will confirm the correct size against the datasheet before you order. Drain choice matters: this unit's automatic drain clears condensate unattended, while the manual-drain variant widens the regulation range to 0.05-0.9 MPa (7-130 psi) against the 0.15-0.9 MPa (20-130 psi) of the automatic and differential-pressure drains. Choose the 5 um W element (as here) for finer protection downstream, or the 40 um standard for general duty. Gauge and scale options can be added at order time, PT is the standard thread with G and NPT as catalogue options, and a bracket is included with this code.
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 GFR series as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Send us your required flow and working pressure and we will confirm the correct size and the datasheet curve figures for the GFR400 before you order.
The A in the code specifies an automatic drain, which ejects collected condensate from the polycarbonate bowl without anyone opening it - useful on unattended or hard-to-reach installations. Note that with an automatic (or differential-pressure) drain the regulation range is 0.15-0.9 MPa (20-130 psi); the manual-drain variant of the same size offers the wider 0.05-0.9 MPa (7-130 psi) range if you need settings below 0.15 MPa.
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.