The AirTAC GFR40015LJNWT 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 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 GFR400-15 combines water and particulate filtration with pressure regulation in a single body. Air passes through a 5 um element (code W), condensate collects in the polycarbonate bowl and is expelled by the differential-pressure drain, and the regulator sets the downstream pressure. This unit is the low-pressure regulator type, is supplied without a gauge and without a mounting bracket, and takes a 1/2 in NPT port (PT is the standard thread; G and NPT are catalogue options to order).
It is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C (non-freezing) operation. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauges and brackets. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR40015LJNWT 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 | Low-pressure 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 | Not fitted |
| 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Filtered, low-pressure regulated air supplied to clamping cylinders on an assembly fixture, with the 5 um element protecting directional valves from particulate carryover.
Air preparation for pusher and diverter cylinders on a packaging conveyor, where the differential-pressure drain clears condensate automatically during continuous running.
A dedicated filtered and regulated branch feeding actuators and air logic on a machine sub-circuit, sized at the 1/2 in NPT port step for the branch demand.
Within GFR400 the port step is 1/2 in; step up or down a size (200/300/400/600) when your line needs a larger or smaller port - we confirm sizing against the published flow curves before you order. Filtration here is the 5 um element (W); the standard grade is 40 um if finer filtration is not required. The drain is the differential-pressure type, with automatic (A) and manual (M) drains as catalogue options. This unit is the low-pressure regulator type with no gauge and no bracket fitted; an embedded square gauge or external round gauge (MPa, psi or bar scale) and a bracket can be ordered, and PT or G threads are available instead of NPT. 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm sizing from the datasheet on request.
Yes. This model is ordered with code N (no gauge). An embedded square gauge or an external round gauge with an MPa, psi or bar scale is a catalogue option and can be specified when ordering.
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.