The AirTAC GFR40015LJF1TK 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 GFR40015LJF1TK is a filter regulator: water and particulate removal plus downstream pressure regulation in a single body, with no lubricator. This 400-size unit is built around 1/2 in NPT ports and carries the standard 40 um filtration element with a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises. The regulator is the low-pressure type, and the embedded square gauge reads in MPa so you can see set pressure at a glance. A reverse/check valve is fitted, and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl suits indoor compressed-air service at this size.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in. Across the family you can order a 5 um element (code W), automatic or manual drains, G (BSPP) or NPT threads in place of the PT standard, gauge scales in psi or bar, an external round gauge, or a mounting bracket. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015LJF1TK 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, MPa scale |
| 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. 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. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a fixture-clamping manifold that works at reduced set pressure, this filter regulator cleans the supply air, holds the low set point and its check valve holds the circuit against supply dips.
Feeding the air cylinders and actuators on a carton-forming or case-packing conveyor, the 40 um element stops pipe-scale and condensate reaching the valves while the regulator sets a stable working pressure.
At a 1/2 in plant air drop serving multiple tools or a machine station, this unit removes water and particulate and regulates pressure in one footprint, with the MPa gauge giving a local pressure readout.
Start with the port step: this unit is 400 size with 1/2 in NPT ports; if your line flow demands more, the next step up is size 600, and smaller lines drop to 300 or 200. Because flow in this series is published as curves and not as a single rating, send us your application details and we will confirm sizing against the datasheet before you order. This example is the low-pressure regulator type, so confirm the set-pressure range you need with us as well. Drain choice matters: the differential-pressure drain fitted here needs no operator attention, while automatic and manual drains are orderable alternatives. Filtration is the 40 um standard element; specify 5 um (code W) if downstream components need finer air. The embedded square gauge here reads MPa; psi and bar scales and an external round gauge are options. Thread is NPT on this unit; G (BSPP) is the other catalogue option and PT is the series standard. A bracket can be added if this one is ordered without.
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 GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and operating conditions and we will confirm the flow and sizing from the datasheet on request before you order.
The L in the code marks the low-pressure regulator type, intended for reduced set pressures; its exact adjustment range is not published on our sheet, so confirm your set point with us. The drain is differential-pressure: condensate is discharged automatically when the pressure differential across the 40 um element rises, with no manual draining required.
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.