The AirTAC GFR40015ALJC1WT AirTAC Filter Regulator NPT1/2 Low-Pressure 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 automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40015ALJC1WT is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for a 1/2 inch NPT port, with an automatic drain that expels collected condensate without manual attention, a fine 5 um filter element (the W grade, one step finer than the 40 um standard), and the low-pressure (L) regulator type for circuits that operate at reduced set pressures. It is supplied with an external round pressure gauge scaled in MPa, without a mounting bracket, and without a reverse/check valve.
This is a genuine AirTAC part from the GFR400 series, one of four sizes in the G-series filter-regulator line (200, 300, 400, 600) with port options from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing); the polycarbonate bowl suits this size. Rated flow for this series is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures against your application before you order.
| Model | GFR40015ALJC1WT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| (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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to the tool-changing and clamping circuits of a machining centre, where the 5 um element protects precision spools and the automatic drain keeps condensate out of the valve stack without daily attention.
Conditioning the air feeding pick-and-place and carton-forming cylinders on a packaging line, with the low-pressure regulator type matching reduced set pressures and the round MPa gauge giving operators a clear line-side pressure reference.
Supplying clean, regulated low-pressure air to analytical instrument cabinets and purge enclosures, where the fine 5 um grade and automatic drain protect sensitive pneumatics in a space that is not checked every shift.
The GFR40015ALJC1WT sits in the size 400 step of the range with a 1/2 inch port; step up or down a size when your line's flow demand or existing piping calls for it, and match the thread to your pipework (NPT here, with PT standard and G available to order). The automatic drain on this unit suits unattended duty; choose manual drain where you prefer controlled, scheduled blowing-down, or the default differential-pressure drain where a pressure drop across the element can trigger discharge. The 5 um (W) element is the right pick when downstream valves, cylinders or instruments are sensitive to finer particles; the 40 um standard element remains the choice for general-purpose protection. The low-pressure (L) regulator type is intended for circuits running at reduced set pressures - confirm the exact range with us before ordering, as it is not published as a single figure. Gauge scale (MPa fitted here; psi or bar selectable) and bracket inclusion are also decodable choices.
Because flow for this series is published only as curves and not as a single rated number, 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 the GFR400 series as curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your line pressure, set pressure and expected air demand, and we will confirm the datasheet flow figures for this exact configuration before you order.
Both are decoded from the model code. The A position selects the automatic drain, which discharges collected condensate on its own instead of relying on manual blowing-down or a differential-pressure trigger. The W position selects the 5 um filter element, one grade finer than the 40 um standard, for downstream equipment that needs finer particulate removal.
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.