The AirTAC GFR40015MLJF1T 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 GFR40015MLJF1T is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and then regulates downstream pressure. This size 400 unit has 1/2 in NPT ports, the low-pressure regulator variant (code L), a manual drain bowl, the standard 40 um filter element, and an embedded square gauge scaled in MPa. The polycarbonate bowl is drained by hand, so it suits circuits where someone checks the bowl as part of normal walk-round maintenance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, a 5 um element option, gauge scale choices, and a bracket option. Flow for this model is published as curves rather than a single rating, so ask us to confirm the figures against your application.
| Model | GFR40015MLJF1T 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 | Fitted — square, MPa 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". |
| 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. |
| 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. |
| (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 spray-booth line, filtered air at a controlled reduced pressure feeds the atomizing heads. This unit cleans the supply, holds the low-pressure setting steady and shows the setting on its MPa gauge, with the manual drain emptied during shift checks.
Low-pressure air jets and hold-down pads on a carton packaging conveyor need clean, gently regulated air. This filter regulator conditions the branch supply and lets an operator drain accumulated water at the end of each run.
A test bench running pneumatic instruments at reduced pressure draws from the shop air main. This unit filters the incoming air, regulates it down to the bench working pressure, and displays the setting on the square MPa gauge.
Size 400 with 1/2 in ports sits in the upper half of the GFR range; step up or down (200/300/400/600) according to the flow your line needs, since larger sizes carry larger ports and more flow. This unit is the low-pressure regulator variant, so if your circuit runs at reduced pressure rather than full line pressure, confirm the exact adjustment range with us before ordering - it is not published as a single figure. The manual drain means an operator opens the bowl drain; choose automatic or differential-pressure drain if the installation is unattended. The 40 um element is standard; specify the 5 um W option where finer filtration is required. Gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order) and bracket inclusion are all selectable at ordering. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before you order.
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 GFR400 series as curves rather than a single rated figure, so we do not quote one number. Tell us your line conditions and we will confirm the relevant flow figures from the datasheet for this exact model before you order.
L marks the low-pressure regulator variant, intended for circuits held at reduced pressure; its exact adjustment range is not published as a single figure, so we confirm it on request. M is the manual drain: the polycarbonate bowl is emptied by opening its drain fitting by hand, which suits attended installations on a regular maintenance walk.
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.