The AirTAC GFR40015AJNWTK 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 AirTAC GFR40015AJNWTK is a size-400 filter regulator: it removes water and particulate from compressed air and holds a set downstream pressure in a single body. This configuration is built with a 1/2 in NPT port, a fine 5 um filter element, an automatic drain that ejects collected condensate without manual attention, a reverse/check valve to hold the downstream setting when upstream pressure is lost, and no pressure gauge fitted. The polycarbonate bowl suits the size-400 frame; maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um (W) elements, automatic, manual or differential-pressure drains, gauge and thread options, and a low-pressure regulator variant. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015AJNWTK 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. |
| J | Supplied without bracket. |
| 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) |
Clean, regulated air feeding the tool-change cylinders and clamping fixtures of a CNC machining center, with the 5 um element protecting sensitive valve spools and the auto drain handling condensate from a busy compressor main.
A drop from the plant air ring main to the pneumatic cylinders and stopper gates on a packaging conveyor, where the regulator holds a steady setting for consistent cylinder stroke timing across the shift.
Point-of-use conditioning ahead of spray equipment in a paint booth, where the 5 um grade knocks out finer particles and the check valve keeps the regulator setting stable if the upstream supply dips.
Size 400 with a 1/2 in port sits in the upper-middle of the GFR range; step up or down through sizes 200, 300, 400 and 600 as your flow demand and piping grow. The 5 um element on this code is the finer of the two published grades (40 um is standard) - choose it where downstream valves and instruments are sensitive to finer particles. The automatic drain is the low-attention choice for duty that runs unattended; manual and differential-pressure drains are available on other codes if you prefer to control discharge yourself. No gauge is fitted on this code (N), and a square or round gauge can be ordered as an option. Thread here is NPT (T); PT is the catalogue standard and G (BSPP) is also orderable, and this code omits the mounting bracket (J).
Flow for the GFR400 is published as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet curve and sizing against your demand before you order.
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 as curves rather than a single rated figure, so we do not state a number here. Send us your line pressure, downstream demand and port arrangement, and we will confirm the datasheet curve and check the sizing for your application on request.
In the code GFR40015AJNWTK, the A position selects the automatic drain, which discharges collected condensate on its own instead of waiting for a manual twist - useful on lines that run unattended. The N position means no pressure gauge is fitted; a square or round gauge in MPa, psi or bar scale can be ordered as an option if you want a local reading.
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.