The AirTAC GFR400C15ALJNWTK AirTAC Filter Regulator NPT 1/2 in 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 See datasheet ports, a differential-pressure 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 GFR series combines a water-and-particulate filter with a pressure regulator in a single body, so one 400-size unit both cleans the compressed air and holds the downstream set pressure. This configuration is built for a 1/2 in NPT port, carries the 5 um filter element (code W) in place of the standard 40 um, drains its bowl automatically, and is the low-pressure regulator type. No gauge is fitted (code N), a reverse/check valve is included (code K), the unit comes without a mounting bracket (code J), and the bowl on this unit is metal. 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 to 600 with ports from 1/8 in to 1 in, and options across the range for manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauges, brackets and PT, G or NPT threads. Because rated flow is published as curves rather than a single figure, we confirm the datasheet and flow data for your application on request.
| Model | GFR400C15ALJNWTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
On a press or fixture circuit that clamps at a lower pressure than the main header, the low-pressure regulator type lets the station hold its own reduced set point while the 5 um element protects the clamping cylinder and control valves from water and fine dirt.
Feeding gripper and pusher cylinders on a bottling line, the unit cleans the plant air to 5 um, holds a steady supply pressure to the actuators, and the automatic drain clears collected condensate without an operator having to bleed the bowl each shift.
On a paint-line spray booth branch, the 5 um element reduces water and particulate carried toward the spray application, the regulator holds the branch at its set pressure, and the automatic drain suits a line that runs unattended through the shift.
Choose the size step first: 400 sits in the middle of the 200/300/400/600 range, and the 15 port code gives a 1/2 in NPT connection here, while PT is the standard thread and G (BSPP) and NPT are catalogue options to order. Where this code differs from the defaults: the 5 um element (W) for finer particulate and water control instead of the standard 40 um, the automatic drain (A) instead of the differential-pressure default, and the low-pressure regulator type (L) instead of standard - its set range is not published as a single figure, so ask us to confirm it. This unit omits the gauge (N) and the bracket (J) and adds a reverse/check valve (K); gauge, scale and bracket options exist on other variants. Because flow is published as curves rather than one rating, send us your application flow and pressures and we will confirm sizing against the datasheet before you order.
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 this series as curves rather than a single rated figure, so we do not quote a number. Send us your required flow, inlet pressure and set pressure, and we will confirm the sizing from the datasheet on request.
The N in the code means no gauge is fitted on this unit. Across the GFR range you can order variants with an embedded square gauge or an external round gauge, with MPa, psi or bar scales. Tell us which scale you read and we will identify the matching variant.
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.