The AirTAC GFR40015MLJNWTK AirTAC Filter Regulator NPT 1/2 in is a genuine G-series filter regulator: water separation, 5 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 GFR40015MLJNWTK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size 400 unit is fitted with a 1/2 in NPT port, a manual drain bowl in PC (polycarbonate), and a 5 um filter element (the finer of the two available grades). It is the low-pressure type, so it is intended for circuits that run below standard regulated pressures. No gauge is fitted (code N), a reverse/check valve is included (code K), and no mounting bracket is supplied (code J).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options for thread type, drain type, filter grade, gauge and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure against your application before ordering.
| Model | GFR40015MLJNWTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 | 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. |
| 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding a bank of pneumatic control valves on a process skid that operates at reduced pressure: the 5 um element keeps scale and pipe debris out of the valve seats while the low-pressure regulator holds the actuation pressure steady.
Conditioning the air feed to a cartoning or wrapping machine's cylinders and grippers: water and fine particulate are stripped out at the 1/2 in inlet, and the regulated output protects the machine's air circuit from pressure drift.
A filtered, regulated drop point on a factory air main serving assembly stations: the 5 um grade suits air tools and actuators sensitive to contamination, and the manual drain lets maintenance bleed accumulated condensate during shift checks.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with a 1/2 in NPT port; smaller and larger GFR sizes cover lighter and heavier duties. This configuration carries the 5 um element (code W) rather than the 40 um standard - select 5 um where downstream valves, cylinders or instruments need finer protection, and note the finer element is best paired with an upstream coarser filter in dirty air. The manual drain (code M) means an operator opens the bowl drain periodically; choose automatic or differential-pressure drain codes if you cannot schedule that. No gauge is fitted, so add a gauge separately if local pressure indication is needed. Thread here is NPT; PT is the catalogue standard and G (BSPP) is also orderable - confirm which your pipework needs. No bracket is included with this code. Because flow is published as curves, 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 GFR series as curves, not as a single rated figure, so we do not quote a flow number for this unit. Tell us your application's air demand and line pressure and we will confirm the correct size and the relevant flow figures from the datasheet on request.
The M in the code specifies a manual drain bowl. Condensate and collected water must be drained by opening the bowl drain periodically rather than automatically. If nobody can schedule that, ask us about GFR400 configurations with automatic or differential-pressure drains 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.