The AirTAC GFR400C10ALF3TK AirTAC Filter Regulator NPT3/8 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 GFR400C10ALF3TK is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure with the low-pressure regulator type. This configuration is built around a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, an embedded square gauge reading in bar, a reverse/check valve fitted on the outlet, and a mounting bracket included for panel or wall fixing. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with matching port sizes, a choice of differential-pressure, automatic or manual drains, an optional 5 um filter element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads (PT is the standard thread; G and NPT are order options). Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C10ALF3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
On a CNC fixture line, filtered air protects the clamp cylinders' seals while the low-pressure regulator holds a gentle, repeatable clamping force; the automatic drain keeps the bowl clear across long unattended runs.
On a carton sealing or diverting conveyor, this unit feeds the actuator valves with clean, regulated air at moderate pressure, and the bar-scale gauge lets operators verify the setting at a glance during changeover.
Feeding spray guns or coating applicators, the 40 um element strips water and grit that would spoil the finish, while the low-pressure regulator type suits processes that run well below full line pressure.
Start with the port step: this unit is size 400 with a 3/8 in NPT thread, so match it to your line size and the flow your circuit needs. Because AirTAC publishes flow as curves rather than one rated number, ask us to check the curve against your application before ordering. Choose the drain to suit access: this version has an automatic drain, which suits installations that are not checked daily; manual and differential-pressure drain versions are available in the same size. The standard filtration grade here is 40 um; specify the W option if you need 5 um. The fitted square gauge reads in bar, and MPa or psi scales plus an external round gauge can be ordered. PT is the standard thread, with G and NPT as catalogue options, and a bracket is included with this unit.
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 this series as curves, not as a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your line pressure and the air demand of your equipment, and we will confirm the flow curve and sizing from the datasheet on request before you order.
The A in the code selects the automatic drain: the bowl expels collected condensate on its own, so it suits installations that are not checked daily; manual and differential-pressure drain versions exist in the same size. The L code marks the low-pressure regulator type, intended for circuits regulated well below full line pressure; its exact adjustment range is not published in the catalogue, so we confirm it on request. The fitted square gauge reads in bar.
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.