The AirTAC GFR40015MLJF2TK 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 AirTAC GFR400 series combines two jobs in one body: it removes water and particulate from compressed air and regulates downstream pressure. This configuration, the GFR40015MLJF2TK, is the 400 size with a 1/2 in NPT port, a manual drain on the bowl, the standard 40 um filtration grade, the low-pressure regulator type, an embedded square gauge with a psi scale, and a reverse (check) valve fitted. The manual drain means an operator opens the bowl drain to expel collected water rather than relying on an automatic mechanism. No mounting bracket is included with this version.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, standard or low-pressure regulator types, gauge and scale options, G (BSPP) or NPT thread variants, and optional brackets. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR40015MLJF2TK 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, psi 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. |
| 2 | Gauge scale: psi. 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) |
Installed on the 1/2 in supply drop feeding a pneumatic press cell, it cleans water and swarf carryover from the air and holds a reduced, low-pressure setting for the clamping circuit. The psi gauge lets the setter read the regulated pressure directly, and the check valve holds the downstream setting if supply dips.
Mounted ahead of air knife nozzles on a packaging conveyor, the filter section strips condensed water that would otherwise mark cartons, while the low-pressure regulator trims the gentle blow-off pressure the nozzles need. The manual drain is emptied during the shift changeover walk.
Fitted at the wall-mounted reel outlet in a truck service bay, it dries the shop air before it reaches impact tools and tire cages and regulates it to the lower working pressure those tasks require. The 1/2 in NPT port matches the bay's fixed drop, and the psi gauge suits US workshop practice.
Start with size and port: the 400 size with a 1/2 in port sits in the upper-middle of the GFR range, so step up to 600 or down to 300 depending on the flow your line needs - we can check the published flow curves against your demand. This unit carries the standard 40 um grade, which suits general-purpose air preparation; if you need finer filtration, the 5 um (W) option is available in the family. The manual drain suits installations where an operator is already present at the unit; choose automatic or differential-pressure drain codes where the unit runs unattended. The low-pressure regulator type is intended for circuits that work below standard pressure - its exact adjustment range is not published, so confirm it with us. The square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread is NPT here, with G (BSPP) and PT available as order options, and this version ships without a mounting bracket - bracketed versions exist in the family. Because flow is published as curves and not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your inlet pressure and the flow your application needs, and we will confirm the sizing from the datasheet curves on request before you order.
The M in the code means the bowl drain is operated by hand: an operator opens it to expel collected water, which suits attended installations. The L in the code marks the low-pressure regulator type, intended for circuits working below standard pressure; its exact adjustment range is not published, so confirm it with us. The F2 square gauge on this unit reads in psi, and the K code means a reverse (check) valve is fitted.
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.