The AirTAC GFR400C15ALJF2K AirTAC Filter Regulator PT1/2 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 GFR400C15ALJF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit has PT1/2 (1/2 in) ports, an automatic drain that discharges collected condensate from the PC bowl without manual intervention, a 40 um standard filter element, and the low-pressure regulator type. An embedded square gauge with a psi scale is included, a reverse/check valve is fitted, and no mounting bracket is supplied with this configuration. Maximum working (inlet) pressure is 1.0 MPa (145 psi), with an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and catalogue options including manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, an external round gauge, a mounting bracket, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C15ALJF2K AirTAC Filter Regulator PT1/2 |
|---|---|
| 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) |
Filtering and regulating the air feed to a pneumatic valve manifold on a packaging machine, with the 1/2 in PT ports matching the main drop and the automatic drain keeping collected condensate out of the valves.
Preparing air at the drop feeding a CNC machining cell's clamps and actuators: the 40 um element catches water and pipe scale, while the regulator holds a steady setting for repeatable clamping.
Supplying filtered, regulated air to cylinder-driven diverters and stops on a bottling-line conveyor, with the psi-scale square gauge letting line staff check the setting at a glance.
Step through the GFR sizes (200/300/400/600) to match the port and flow your line needs; this is the 400 size with 1/2 in PT ports. Choose the drain to suit your maintenance routine: automatic (this unit), manual, or differential-pressure. The 40 um element is standard; specify the W code for 5 um filtration. The gauge here reads in psi, with MPa or bar scales available and an external round gauge as an option. PT is the standard thread; G (BSPP) and NPT are order options. This is the low-pressure type, and the exact regulation range is not published in the material we hold, so we confirm it on request. Because flow is published as curves rather than a single rating, send us your application details 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 the GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your flow requirement and operating pressure and we will confirm the datasheet curve for the GFR400 at 1/2 in before you order.
This unit carries the A code, so condensate is discharged from the PC bowl automatically rather than on a manual schedule, which suits lines that run unattended. Manual and differential-pressure drains are catalogue options across the GFR family if your maintenance routine prefers them.
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.