The AirTAC GFR40015LNT AirTAC Filter Regulator NPT1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 40 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 GFR40015LNT is an AirTAC GFR400 filter regulator: a single body that first removes water and particulate from compressed air, then regulates downstream pressure. This unit is the low-pressure (L) type, so it is intended for circuits that hold lower set pressures than the standard version. It carries a 1/2 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically when the pressure differential across the element rises, and no gauge is fitted. A mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drain, a 40 um standard or 5 um (W) element, and gauge options. Flow for this series is published as curves rather than a single rated figure; ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40015LNT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On an assembly fixture that clamps with air held at a low set pressure, the GFR40015LNT cleans the supply of water and swarf and holds the reduced pressure the clamp cylinders were sized for, with the differential-pressure drain keeping condensate off the valves.
Feeding the solenoid valves and air cylinders that divert cartons on a packaging conveyor, this filter regulator removes line moisture and particulate and regulates the supply at the lower pressure those actuators need, protecting seals and seating surfaces.
Where a bench-top or skid-mounted process needs clean air regulated to a modest set pressure, the low-pressure GFR40015LNT provides filtered, reduced-pressure air at a 1/2 in NPT connection, with the bracket allowing panel or frame mounting beside the skid.
Size 400 with a 1/2 in port sits in the upper half of the GFR range, so step up from a smaller size when the line's flow demand outgrows 3/8 in piping, and down when it does not - the published flow curves, not a single rating, are the reference, so ask us to confirm sizing before ordering. The 40 um element suits general plant air; choose the 5 um (W) option where finer particulate removal matters. Drain here is differential-pressure, which discharges condensate automatically as the element loads; automatic (A) and manual (M) drains are also available in the family. This unit is the low-pressure (L) type and ships without a gauge (code N) - gauge variants with MPa, psi or bar scales exist if you want a local readout. Thread is NPT as ordered; PT is the catalogue standard and G (BSPP) is also available. A bracket is included.
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 number here. Tell us your line pressure, set pressure and expected air demand, and we will confirm the relevant datasheet flow-curve figures for this 1/2 in, size 400 unit on request before you order.
N means no gauge is fitted, so you will need a separate gauge or an existing line gauge to read the regulated pressure; gauge-equipped variants with MPa, psi or bar scales are available in the family. L means this is the low-pressure regulator type, intended for circuits that hold lower set pressures than the standard version - we can confirm the exact low-pressure range from the datasheet on request.
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.