The AirTAC GFR40015MLNT 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 GFR40015MLNT is an AirTAC GFR400 series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 400 size with 1/2 in NPT ports, a manual drain bowl, the standard 40 um filter element, and the low-pressure regulator type. The bowl on this 400 size is polycarbonate (PC), and a mounting bracket is included. No gauge is fitted with this code, so add a separate gauge if the application needs a visual pressure reading.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with a choice of PT, G or NPT threads, manual, automatic or differential-pressure drains, a 40 um standard or 5 um (W) filter element, and standard or low-pressure regulation. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR40015MLNT 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. |
| (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) |
Feeds and regulates the air supply to clamping cylinders on a fixture or jig where the process calls for a lower setpoint than a standard regulator delivers, with the 40 um element keeping debris out of the valve seats.
Sits in the air preparation drop feeding pneumatic actuators on a carton or bag packaging line, filtering condensed water from the main and holding a steady regulated pressure to the cylinders.
Installed at the point of use on process machinery that runs on low regulated air pressure, where the manual drain bowl is emptied during scheduled changeovers and the 1/2 in port matches the machine drop.
Start with the port size: this unit steps up to 1/2 in on the 400 body, so match it to line size and the flow your circuit needs - we can confirm the flow curve against your demand before you order. This code carries a manual drain, which suits installations where an operator can bleed the bowl on a routine; choose automatic or differential-pressure drain codes if the unit sits where manual draining is impractical. The standard 40 um element protects most pneumatic tools and valves; specify the W code for the 5 um element where finer filtration is required. This is the low-pressure regulator type, and its exact adjustment range is not published in the material we hold, so confirm it with us if your setpoint is critical. Thread here is NPT; PT is the standard and G (BSPP) is also an order option. A bracket is included; no gauge is supplied with this code.
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 series as curves, not as a single rated figure, so we do not quote a number. Send us your line pressure and the flow your circuit needs and we will confirm the sizing from the datasheet on request.
The M in the code GFR40015MLNT specifies a manual drain bowl: an operator opens it to bleed off collected water. If the unit will be mounted where routine draining is not practical, order the automatic (A) or differential-pressure (blank) drain variant of the same GFR400 size instead.
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.