The AirTAC GFR40015MLJF3TK AirTAC Filter Regulator NPT1/2 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40015MLJF3TK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This size 400 unit is configured with 1/2 in NPT ports, a manual drain on the bowl, the standard 40 um filter element, an embedded square gauge scaled in bar, a built-in reverse/check valve, and the low-pressure regulator type. The trailing T in the code specifies NPT threading instead of the PT standard. Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl should be drained by hand via the manual drain, which suits installations where an automatic or differential-pressure drain is not wanted.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, a 40 um standard or 5 um (W) filter element, standard or low-pressure regulation, square or round gauges with MPa, psi or bar scales, an optional reverse/check valve, and an optional mounting bracket (this configuration is ordered without one). Flow 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 | GFR40015MLJF3TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, bar 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 3 | Gauge scale: bar. 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) |
Feeding cleaned, pressure-controlled air to the cylinders and actuators on a carton-forming or wrapping line, with the manual drain emptied during scheduled shift checks.
Supplying regulated air to conveyor stopper gates and diverters on a bottling or material-handling line, where the low-pressure regulator type matches modest set pressures.
Serving as the main filter-regulator at the inlet of a machine's pneumatic manifold, with the reverse/check valve holding downstream pressure if the upstream supply dips.
Choose the size and port step against the air consumption of the downstream circuit: this unit is size 400 with 1/2 in NPT ports, one step up from size 300 (3/8 in to 1/2 in territory). Because flow is published as curves and not as a single rated number, send us your flow requirement and we will confirm the correct size from the datasheet before you order. This configuration is the low-pressure regulator type; its exact adjustment range is not published on the sheet we transcribe from, so confirm your set pressure with us first. The manual drain means an operator drains the bowl periodically - if you prefer hands-off drainage, ask about the automatic (A) or differential-pressure (blank) drain variants. The 40 um element is the standard grade; the 5 um (W) element is available if finer filtration is needed. The square gauge fitted here reads in bar; MPa and psi scales and an external round gauge are alternatives. Thread is NPT on this unit (PT is the catalogue standard, G/BSPP also available), and the bracket option was declined (code J), so plan your own mounting.
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 figure, so we do not quote a number here. Tell us your required flow and working pressure and we will confirm against the datasheet whether this size 400, 1/2 in NPT unit is correctly sized before you order.
The M in the code selects a manual drain: the polycarbonate bowl is emptied by hand at intervals instead of draining automatically. The L selects the low-pressure regulator type, whose exact adjustment range is not published on the catalogue sheet we work from - confirm your set pressure with us and we will verify suitability from the datasheet.
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.