The AirTAC GFR40015ALJC1WTK AirTAC Filter Regulator NPT1/2 5um 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 GFR40015ALJC1WTK is a size 400 GFR filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 1/2 in NPT port, a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that discharges collected condensate without manual attention, and the low-pressure regulator type for circuits that run below standard line pressure. It also carries a reverse/check valve (code K), an external round pressure gauge reading in MPa, and no mounting bracket (code J). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as orderable options, plus a choice of drain types, filter grades and gauge styles. AirTAC publishes flow for this family as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR40015ALJC1WTK AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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 | 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". |
| 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. |
| 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) |
Point-of-use conditioning on a carton-forming and packing machine: the 5 um element protects directional valves and cylinders from water and fine dirt while the low-pressure regulator holds the actuator circuit at its working pressure.
Feeding pop-up gates, stoppers and diverters on a conveyor line, where the automatic drain keeps condensate out of the bowl during long shifts and the reverse/check valve holds downstream pressure if the supply dips.
Supplying pneumatic grippers and small actuators on laboratory automation equipment, where the finer 5 um filtration and the round MPa gauge give a clean, readable regulated supply at reduced line pressure.
Choose the size by the port and flow step you need: size 400 with a 1/2 in port sits above the 300 (3/8 in) and 200 (1/4 in) steps and below size 600, so match it to the line size and the flow curve rather than a single rating. Pick the drain type: automatic (this unit) empties the PC bowl without operator action, while manual and differential-pressure drains are the other catalogue choices. Pick the filter grade: 5 um (W) where finer particulate protection matters, 40 um as the standard. The low-pressure regulator type is selected where the circuit runs below standard line pressure; ask us to confirm the exact adjustment range for this variant. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit has the round gauge in MPa. Thread is NPT here; PT is the standard and G (BSPP) is the other option. No mounting bracket is fitted (code J), and the reverse/check valve (K) is included. Before ordering, ask us to confirm sizing against your application, since flow is published as curves, not a single rating.
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 does not publish a single rated flow figure for the G-series; flow is given as curves in the catalogue. We will confirm the flow curve and the datasheet for this size 400, NPT1/2 filter regulator on request, so you can check it against your application before ordering.
The A in the code is the drain: an automatic drain discharges collected condensate from the polycarbonate bowl by itself, with no manual bleeding. The W is the filter grade: a 5 um element instead of the 40 um standard, for finer protection of downstream valves and actuators. This unit is also the low-pressure regulator type with a round MPa gauge, a reverse/check valve, no mounting bracket, and an NPT 1/2 in port.
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.