The AirTAC GFR400-15LF2T 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 AirTAC GFR400-15LF2T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This size 400 unit is built around a 1/2 in NPT port, carries the standard 40 um filter element, and drains condensate automatically by differential pressure as it accumulates. It is the low-pressure (L) type, so its regulation range differs from the standard version - the exact range is not published in the catalogue and we confirm it on request. The embedded square gauge is fitted with a psi scale, so set pressure can be read directly without extra fittings.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, optional 5 um filtration (code W), manual or automatic drain, MPa/psi/bar gauge scales, and G or NPT thread options. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR400-15LF2T 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 | Fitted — square, psi scale |
| 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. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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) |
Feed filtered, regulated air to a cartoning or case-packing machine's cylinders and actuators, with the differential-pressure drain carrying condensate away during long production runs.
Supply clean, pressure-controlled air to conveyor gate and divertor cylinders, using the fitted psi gauge to set the low-pressure level the mechanism was designed around.
Mount the bracketed unit at the machine's air inlet panel so one body both filters incoming shop air and holds a stable set pressure for clamping and tool-change circuits.
Size 400 with a 1/2 in port sits in the upper-middle of the GFR range - step up to size 600 or down to 300 depending on the flow your line needs, and we will confirm the flow curves against your application before you order. Drain type here is differential-pressure, which suits continuous operation; choose automatic (A) or manual (M) variants if your duty cycle calls for it. The standard element is 40 um; specify W for 5 um where finer particulate removal matters. This unit is the low-pressure type, so if your circuit runs at conventional line pressures, check the range with us first. The fitted square gauge reads in psi; MPa and bar scales are available. Thread is NPT as ordered, with PT and G offered across the family, and the mounting 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 application and we will confirm the flow curve and sizing from the datasheet on request before you order.
L marks the low-pressure type of regulator. Its exact regulation range is not published in the catalogue, so we confirm it on request. If you need the standard range instead, the version without the L code covers 0.15-0.9 MPa with differential-pressure drain.
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.