The AirTAC GFR40015MLJNT 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 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 GFR40015MLJNT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air through a 40 um element, then regulates downstream pressure. This configuration is the low-pressure type, sized for 1/2 in NPT ports, with a manual drain on the polycarbonate bowl. No gauge is fitted and no mounting bracket is included, so mount it on the connected pipework or add your own hardware.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G, NPT or PT threads, manual, automatic or differential-pressure drains, an optional 5 um element, gauge choices and bracket options. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40015MLJNT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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 | 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". |
| 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. |
| 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 a CNC fixture line running low-pressure clamping circuits, this filter regulator cleans the supply air of water and swarf-carrying particulate and holds a reduced, low-pressure setting so clamps grip without overloading the mechanism.
On a carton-forming and sealing conveyor, the unit filters condensed water out of the shop air before it reaches the cylinders and regulates pressure to the low level the pusher and flap actuators were designed for.
Feeding positioners and pilot actuators on a process valve manifold, this unit strips water and particles that would score pilot spools and regulates the pilot supply at the low pressure the valve manufacturer specifies.
Step up through the GFR sizes (200, 300, 400, 600) and their port options (1/8 in to 1 in) against the flow your line needs, since each step carries a larger port and more capacity. This unit is the 400 size with 1/2 in NPT ports. Choose the drain to suit maintenance routines: manual drain (this unit) needs an operator to bleed the bowl, automatic drains continuously, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify the W code for 5 um where finer filtration is needed. Gauge options (round or square, MPa, psi or bar scale) and a bracket can be ordered on other codes; this one carries none. Thread is NPT here; PT is the standard and G is the other order option.
Because flow is published as curves rather than a single rated figure, 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 this family as curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, downstream pressure and expected air demand, and we will confirm the datasheet flow curve and sizing on request before you order.
The M in the code specifies a manual drain: condensate collects in the polycarbonate bowl until an operator opens the drain. Choose manual where the unit is accessible and checked on a routine, and specify the automatic-drain code instead where the installation is unattended or drains are hard to reach.
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.