The AirTAC GFR400C15ALJC1WTK AirTAC Filter Regulator NPT1/2 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 GFR400C15ALJC1WTK is a 400-size filter regulator: water and particulate removal plus pressure regulation in a single body. This configuration is built with a 1/2 in NPT port, a fine 5 um filtering element (the W grade, tighter than the standard 40 um), an automatic drain that bleeds collected condensate from the metal bowl without anyone opening it, and a low-pressure regulator type for circuits that run below standard line pressure. A round pressure gauge scaled in MPa is fitted so the setpoint is visible at the unit, and a reverse/check valve is included to hold downstream pressure if the upstream supply is lost. No mounting bracket is supplied with this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in, a choice of automatic, manual or differential-pressure drains, 40 um or 5 um elements, gauge styles and scales, and PT, G or NPT threads. The maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Because published flow data appears as curves rather than a single rating, we confirm flow and full datasheet figures for your application on request.
| Model | GFR400C15ALJC1WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Feeds a workholding clamping circuit that must hold a gentle, stable pressure well below the main shop-air line, with the check valve keeping the clamp from venting if the upstream supply drops.
Conditions and regulates air for the pusher and divert cylinders along a packaging conveyor, with the 5 um element protecting valve spools from particulate and the automatic drain clearing condensate without daily attention.
Supplies a filtered, regulated low-pressure air feed for chip-blowing and part-cleaning nozzles at a CNC machining cell, with the fitted MPa gauge letting the operator verify the setting at the unit.
Start with the port step: this unit is the 400 size with a 1/2 in NPT thread, the right tier when your line plumbing is 1/2 in and your air demand sits in the upper mid-range of the G-series span. The 5 um element (W code) suits downstream equipment that tolerates less particulate than the standard 40 um grade; choose 40 um where coarse protection is enough and you want the lowest resistance to flow. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives in the same family. The low-pressure regulator type is the correct pick when your working pressure sits below the standard regulator's normal band - the exact adjustment range for this low-pressure version is not published, so ask us to confirm it against your setpoint. The fitted round gauge reads in MPa; psi and bar scales and a square gauge style are the other catalogue options. PT is the standard thread, with G (BSPP) and NPT as order options, and a mounting bracket can be added if this no-bracket code does not suit your panel. Flow for this series is published as curves, not a single rating, so send us your application details and we will confirm sizing 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 the GFR series as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Tell us your application and we will confirm the flow and full datasheet figures for this 400-size, 1/2 in NPT unit on request before you order.
The A in the code selects the automatic drain: condensate collected in the bowl is discharged on its own, which suits installations that are not checked daily; manual and differential-pressure drains are the other catalogue options. The L code marks the low-pressure regulator type, intended for working pressures below the standard band - its exact adjustment range is not published, so ask us to confirm it against your setpoint.
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.