The AirTAC GFR40015LNWT AirTAC Filter Regulator 1/2 in NPT, 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 AirTAC GFR40015LNWT is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is supplied with a 1/2 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain on the bowl, and the low-pressure regulator type. No gauge is fitted on this variant, and the mounting bracket is included. The polycarbonate bowl is rated with the unit for a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT (standard), G or NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge choices and standard or low-pressure regulator types. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR40015LNWT AirTAC Filter Regulator 1/2 in NPT, 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. |
| (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. |
| (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) |
On a machining cell where workpieces are held by air clamps running below full line pressure, this unit filters the supply to 5 um and steps the pressure down with its low-pressure regulator before it reaches the clamp cylinders.
On a carton-sealing or wrapping conveyor, the unit conditions the compressed air feeding the diverters and pusher cylinders, draining accumulated water from the bowl and holding a steady reduced pressure for consistent actuation.
On a lab autosampler or analytical instrument skid running on plant compressed air, the 5 um element strips water and fine particulate before the low-pressure regulator delivers a controlled supply to sensitive pneumatic components.
Choose the size and port step against the air demand of your circuit: this unit is size 400 with a 1/2 in NPT port, one step up from the 300 series. If your line runs at reduced pressure rather than full line pressure, the low-pressure regulator type in this code is the relevant choice - confirm the adjustment range with us before ordering, as it is not published as a single figure. The 5 um element (code W) suits circuits with finer air-quality needs; the 40 um standard element remains available if coarse filtration is sufficient. Drain options are differential-pressure (fitted here), automatic or manual. Gauge and scale choices can be added on other variants, and PT is the standard thread with G and NPT as order options. 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 the GFR series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Tell us your application and required flow, and we will confirm the correct size from the datasheet on request before you order.
No. The N in the model code GFR40015LNWT means no gauge is fitted. Gauge options exist across the GFR range - an embedded square gauge or an external round gauge, with MPa, psi or bar scales - so if you need a gauge, ask us for the equivalent GFR400 variant with the gauge code included.
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.