The AirTAC GFR400C10ALF2TK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR400C10ALF2TK is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This size 400 unit is threaded NPT3/8 (3/8 in), carries a 40 um standard filter element, and uses the low-pressure regulator type. The automatic drain ejects collected condensate on its own, so the metal bowl does not need manual blowing down. The embedded square gauge on a psi scale is fitted, a reverse/check valve is built in, and a mounting bracket is included. 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 from the GFR400 range. The G-series filter regulators span sizes 200 to 600 with PT, G(BSPP) or NPT thread options, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) elements, and gauge choices. AirTAC publishes flow as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C10ALF2TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 carton-forming or case-packing line, this unit cleans the shop air feeding the cylinders and holds a steady, lower regulated pressure so carton flaps are folded firmly without crushing the product.
Feeding gripper fingers and reject-blow nozzles on a filling line, the 40 um element keeps water and debris out of the small valves, while the automatic drain keeps condensate from collecting during continuous shifts.
For bench-top test rigs and laboratory automation that run at reduced pressure, the low-pressure regulator type with a psi-scale gauge gives a readable, repeatable setting, and the check valve holds the set pressure if the main supply dips.
Size 400 with a 3/8 in port sits in the middle of the GFR range: step up to 600 or down to 300/200 depending on the flow your line needs, since port size tracks the flow curve rather than a single rating. This code already fixes the main choices: NPT thread, automatic drain (no daily manual draining, and no differential-pressure dependency on stable flow), 40 um filtration, low-pressure regulator type, square psi gauge, and a built-in check valve. If you need finer filtration, the 5 um element is the W-suffix option; if you need a different thread, PT and G(BSPP) are order options on the same size. AirTAC publishes flow as curves, not one rated number, so send us your flow and pressure conditions 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 GFR400 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your inlet pressure, set pressure and required flow, and we will confirm the sizing from the datasheet curves on request before you order.
This unit's A code means an automatic drain: condensate collected in the metal bowl is ejected without anyone opening the drain, which suits unmanned or continuously running installations. The catalogue alternatives are manual drain (you drain it yourself, and it allows the wider 0.05-0.9 MPa adjustment band) and differential-pressure drain (the default). This configuration is fixed as automatic, so no change is needed at ordering.
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.