The AirTAC GFR400C15AJC2GK 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 GFR400C15AJC2GK is a size 400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built on a G1/2 (BSPP) port with an automatic drain, so collected condensate is expelled without anyone opening the bowl, and a 40 um filter element for general-purpose air preparation. It is fitted with an external round gauge reading in psi, a reverse/check valve to hold downstream pressure when the supply is lost, and is supplied without a mounting bracket.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 40 um standard or 5 um (code W) element, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow for this model is published as curves rather than a single rating, so ask us to confirm the datasheet figures against your application before ordering.
| Model | GFR400C15AJC2GK 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) |
Feeds filtered, regulated air to the tool-clamp and pallet-changer circuits of a CNC machining centre, with the automatic drain protecting the bowl from filling during unattended overnight runs.
Sits at the drop of a packaging line's air header to condition and regulate supply to case-erector and sealing cylinders, with the check valve holding downstream pressure through brief supply dips.
Installed at a 1/2 in branch drop in a factory air ring to give a work cell its own filtered, regulated supply, with the psi gauge letting maintenance read set pressure at a glance.
Start with the size and port: this unit is size 400 with a G1/2 port, one step up from size 300 (3/8 in) and one below size 600 (3/4 in), so step up or down if your line's flow demand points elsewhere. Next, the drain: automatic (this code) empties the bowl on its own and suits unattended or hard-to-reach installations; manual drain is cheaper but needs regular attention; differential-pressure drain is the catalogue default. The element here is the 40 um standard grade; specify 5 um (code W) only where downstream equipment needs finer filtration. The gauge fitted is the external round type reading psi; an embedded square gauge is the standard alternative, with MPa and bar scales also available. Thread is G (BSPP) on this code; PT is the standard offering and NPT is an order option, so match the thread to your piping standard. Brackets are optional on GFR, and this code omits one.
On sizing: flow for the GFR400 is published as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet curves and 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 GFR400 as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and required conditions and we will confirm the datasheet flow curves and check the sizing with you before you order.
The A in the code selects the automatic drain, which expels collected condensate by itself instead of waiting for a manual drain, and C2 selects the optional external round gauge with a psi scale. An embedded square gauge is the standard alternative, and MPa or bar scales can be ordered. The K in the code also confirms a reverse/check valve is fitted.
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.