The AirTAC GFR400C10ALF2G 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 AirTAC GFR400C10ALF2G is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is fitted with a G3/8 (BSPP) port, a 40 um standard filter element and an automatic drain that expels collected condensate without manual attention. The regulator is the low-pressure type, and an embedded square gauge with a psi scale is included so the set pressure can be read at a glance. A mounting bracket is supplied, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing); the polycarbonate bowl suits this size.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with matching port sizes, and options include manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, an external round gauge, and PT, G or NPT threads to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow data for your application before ordering.
| Model | GFR400C10ALF2G 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) |
Feeding filtered, regulated air to carton-sealing and case-erector cylinders on a packaging line, where the automatic drain keeps condensate out of the valves between shifts.
Supplying spray guns at a controlled low pressure in a furniture finishing booth, with the 40 um element catching water and pipe scale before they reach the finish.
Conditioning shop air for analytical instruments and pneumatic sample-handling actuators that need clean air held at a gentle, stable low pressure.
Start with size and port: 200, 300, 400 and 600 step up in port and flow capacity, so match the size to the air demand of the circuit - this unit is size 400 with a G3/8 port. Choose the drain: automatic (as fitted here) empties the bowl on its own, manual requires operator action, and differential-pressure drains only when the element loads up. Choose the element grade: 40 um is standard and 5 um (code W) suits finer protection. Pick the gauge scale (MPa, psi or bar - this unit is psi) and note that an external round gauge is optional. Thread is G (BSPP) here; PT is the standard and G or NPT are order options. This is the low-pressure regulator type; its set range is not published as a single figure, so confirm it with us. Because flow is published as curves rather than one rated number, ask us to check the datasheet 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 this series as curves, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the datasheet and flow-curve data on request so you can size the unit correctly.
This unit carries code A, the automatic drain, which expels collected condensate without operator attention - useful on lines that run unattended. The GFR family is also available with manual or differential-pressure drains, and the 5 um element (code W) is an alternative to the standard 40 um grade if you need finer filtration.
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.