The AirTAC GFR400C10AC3TK AirTAC Filter Regulator NPT3/8 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 GFR400C10AC3TK is a GFR400-series filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your set point. This configuration carries a 3/8 in NPT port, an automatic drain that expels collected condensate without manual bleeding, a standard 40 um filter element, a metal bowl, a round pressure gauge reading in bar, a built-in reverse/check valve and a mounting bracket. Regulation range is 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the unit operates from -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR400C10AC3TK AirTAC Filter Regulator NPT3/8 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 pressure setting for the directional-valve manifold that runs clamp and dump cylinders on a robotic welding cell. The 40 um element screens rust and pipe scale before the valves, the bar gauge gives the setter a local reading, and the check valve holds the set circuit if plant supply dips.
Feeding the sealing-jaw and hold-down cylinders of a carton-sealing conveyor. The automatic drain clears condensate that collects over a shift so it is not carried into the jaw valves, and the regulator lets the line crew set jaw pressure at the machine instead of at the header.
Regulating air to the pneumatic clamps on a bench assembly press. A stable, locally set pressure keeps clamp force repeatable part to part, the metal bowl and included bracket suit fixed machine mounting, and the NPT3/8 port matches typical fixture supply drops.
Size the unit by the port step and the flow your circuit needs: this GFR400 sits at the 400 size with a 3/8 in NPT port, one step up from the 300 series. Because AirTAC publishes flow as curves rather than a single rated figure, send us your flow demand and we will confirm the fit from the datasheet before you order. Other decodable choices on this family: drain type (this unit is automatic; manual-drain versions widen the regulation range down to 0.05-0.9 MPa / 7-130 psi), filter grade (40 um standard here, 5 um with code W), gauge scale (this one reads bar; MPa and psi are available), thread (PT is the standard; G and NPT are order options, as the T in this code), and the bracket, which is included here (code J deletes it).
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 there is no one number we can honestly quote. Tell us your working flow and downstream pressure and we will confirm the sizing directly from the datasheet before you order.
The A in the code sets an automatic drain, which expels collected condensate from the bowl without anyone having to bleed it by hand - useful on lines that run unattended. The K adds a reverse/check valve, so air already downstream is held if the upstream supply dips. Drain choice also sets the regulation range: automatic and differential-pressure drains give 0.15-0.9 MPa (20-130 psi), while manual-drain versions reach down to 0.05 MPa (7 psi).
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.