The AirTAC GFR40015ALJNWTK AirTAC Filter Regulator NPT1/2 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 GFR40015ALJNWTK is a size-400 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This configuration is built for a 1/2 in NPT port, uses the fine 5 um filter element (code W), and carries an automatic drain that bleeds collected condensate from the polycarbonate bowl without anyone opening it. It is the low-pressure type (code L), has a reverse/check valve fitted (code K), and no pressure gauge is supplied (code N) - add a gauge separately if your station needs a local reading.
This is a genuine AirTAC part in the GFR family, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures against your application.
| Model | GFR40015ALJNWTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 | 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". |
| 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. |
| 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) |
Filtered, regulated air holds clamp cylinders on a CNC fixture at a set pressure; the 5 um element protects the clamp valve, and the check valve holds the circuit if supply dips.
On a carton-sealing or case-packing conveyor, this unit conditions the supply to the pick-and-place and pusher cylinders, with automatic drain keeping condensate out of the valves during continuous shifts.
A low-pressure filter regulator suits bench and pilot rigs that run instrument air at reduced settings, where the fine 5 um grade protects sensitive pneumatic controls downstream.
Work through the decodable choices: start with size and port - the 400 frame with a 1/2 in NPT port suits lines with substantial air demand, and stepping up a size gives more flow capacity at the same port discipline. Choose the drain: automatic (this unit) suits unmanned or hard-to-reach stations; manual and differential-pressure drains are the alternatives in the family. Choose the element: 5 um (this unit) for finer protection, 40 um for general duty. Note this is the low-pressure type (L) with a check valve (K), no gauge (N) and no mounting bracket (J); bracketed versions and gauge options exist in the family, and PT is the standard thread with G and NPT as order options.
On sizing: flow for this series is published as curves, not a single rating, so we cannot quote one number here. Send us your application and we will confirm the datasheet figures before you order.
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 this series as curves, not as a single rated figure, so we do not quote a number. Tell us your line pressure and the air demand of your equipment and we will confirm the datasheet curve figures against your application before you order.
The N code means no gauge is fitted; the family offers embedded square gauge or external round gauge options with MPa, psi or bar scales if you want a local reading. The K code means a reverse/check valve is fitted, which blocks backflow through the unit. This is also the low-pressure type (L) with an automatic drain and a 5 um element.
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.