The AirTAC GFR400C10ALF2GK AirTAC Filter Regulator G3/8 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 GFR400C10ALF2GK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This unit is built on the size 400 platform with a 3/8 in port and G (BSPP) thread, a 40 um filter element, an automatic drain on a metal bowl, and the low-pressure regulator variant fitted with an embedded square gauge reading in psi. A reverse (check) valve is fitted and the 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. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the family include manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa or bar, and PT or NPT threads where G is not required. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C10ALF2GK AirTAC Filter Regulator G3/8 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) |
Filtered, regulated low-pressure air to the clamping cylinders on an assembly fixture, with the fitted reverse (check) valve in the circuit and the psi gauge letting setters read the clamping pressure directly.
Supplying clean, regulated air to grippers and actuators on a carton-forming packaging line, where the automatic drain clears condensate from the bowl without a operator having to bleed it by hand.
Prepping the air feed to spray guns in a paint finishing booth: the 40 um element guards the gun, the low-pressure regulator suits reduced-pressure spraying, and the square psi gauge lets operators set and verify gun pressure.
Size 400 with a 3/8 in port sits in the upper-middle of the GFR range; step between 200, 300, 400 and 600 according to the air demand of your circuit - we can check the published flow curves against your requirement. The real choices on this unit: automatic drain (manual and differential-pressure drains are also available in the family), the 40 um standard element versus the 5 um W option, the square psi gauge (MPa or bar scales are order options), and the G thread - PT is the AirTAC standard thread and NPT can be ordered as a specification option. The L code selects the low-pressure regulator variant rather than the standard type; its exact adjustment range is not published, so confirm it with us. Flow is published as curves, not a single rating - ask us to confirm sizing against your application before ordering.
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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your supply pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
L selects the low-pressure regulator variant instead of the standard type - its exact adjustment range is not published, so confirm it with us. A means the bowl drains condensate automatically rather than by hand. F2 fits the embedded square gauge with a psi scale; MPa and bar scales are available as order options.
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.