The AirTAC GFR400C15AJF2GK AirTAC Filter Regulator G1/2, Auto Drain 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 GFR400C15AJF2GK is a filter regulator: water and particulate removal plus downstream pressure regulation in a single GFR400 body. This configuration is built around a G1/2 (BSPP) port with G thread, a 40 um standard filter element, and an automatic drain that bleeds collected condensate from the polycarbonate bowl without manual attention - useful where the unit sits above eye level or in an infrequently visited enclosure. The standard regulator covers 0.15-0.9 MPa (20-130 psi) with an embedded square gauge reading in psi, and a reverse/check valve is fitted to hold downstream pressure if the supply is interrupted. No mounting bracket is included with this code; a bracket is available as an option.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, drain choices (differential-pressure, automatic, manual), a 5 um optional element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rated number.
| Model | GFR400C15AJF2GK AirTAC Filter Regulator G1/2, Auto Drain |
|---|---|
| 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) |
Point-of-use preparation for carton sealers and case erectors: the 40 um element strips water and pipe scale before it reaches cylinders, while the regulator holds a steady setting for consistent jaw and clamp action.
Filtered, regulated air for diverter gates, stopper gates and vacuum grippers on a filling line, with the automatic drain coping with condensate between maintenance rounds.
Air preparation for workholding clamps and tool-change cylinders on a CNC cell, where the check valve helps hold the clamped state if shop air pressure drops.
Size 400 with a G1/2 port sits in the upper-middle of the G-series range; step up to size 600 or down to 300 depending on the flow your line needs - and because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering. The automatic drain on this unit suits installations that are not checked daily; choose manual or differential-pressure drain codes if your maintenance routine differs. The 40 um element is the standard grade; specify code W for 5 um if downstream equipment needs finer filtration. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread here is G (BSPP) - PT is the catalogue standard, with G and NPT as order options - and the J code means no bracket, so add one if the unit will not be pipe-mounted.
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 GFR400 series as curves rather than a single rated figure, so no one Cv or l/min number is quoted here. Tell us your line pressure, downstream setting and expected air demand, and we will confirm the flow and datasheet figures for this exact unit on request before you order.
The A in the code selects an automatic drain, which expels collected condensate from the bowl without operator attention - a good fit for elevated or enclosed mounting points. Differential-pressure drain (no code letter) and manual drain (code M) versions of the GFR400 are available; note that the regulator adjust range differs by drain type: 0.15-0.9 MPa (20-130 psi) for automatic and differential-pressure drains, 0.05-0.9 MPa (7-130 psi) for manual drain.
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.