The AirTAC GFR400C10AC2G AirTAC Filter Regulator G3/8 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 GFR400C10AC2G is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a drain bowl but no lubricator. This configuration carries G3/8 (3/8 inch) ports, a 40 um filter element, an automatic drain that ejects condensate without operator attention, and a round pressure gauge reading in psi. The regulator adjusts from 0.15 to 0.9 MPa (20-130 psi) under a maximum inlet pressure of 1.0 MPa (145 psi), and the unit runs on compressed air from -5 to 70 C, non-freezing. The 400 size uses a polycarbonate bowl, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include a 5 um element (code W), manual or differential-pressure drains, embedded square or external round gauges with MPa, psi or bar scales, and G or NPT threads alongside the PT standard. Flow for the series is published as curves rather than a single rating, so ask us to confirm figures against the datasheet for your application.
| Model | GFR400C10AC2G AirTAC Filter Regulator G3/8 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) |
Feeding filtered, regulated air to the clamping cylinders on a CNC machining fixture, holding a stable setpoint between 0.15 and 0.9 MPa while the 40 um element strips water and particulate before it reaches the fixture valves.
Supplying the diverter and pusher cylinders on a carton packaging conveyor, where the automatic drain keeps condensate out of the circuit through continuous shifts and the round psi gauge gives operators a visible setpoint.
Conditioning supply air at a paint spray booth, filtering water and particulate to 40 um and letting the operator set atomisation pressure by hand, with the automatic drain clearing condensate through the working day.
Step through the real choices in order. First pick the size and port against the flow your line needs - the 400 size here carries G3/8 ports, with smaller and larger steps available if your demand sits elsewhere. Then choose the drain: automatic (this unit) for unattended condensate removal, manual where you want operator control, or differential-pressure as the default; note the regulation range is 0.15-0.9 MPa (20-130 psi) with the automatic drain. Filter grade is 40 um standard, with 5 um (code W) where finer filtration is needed. Gauge scale can be MPa, psi or bar, and thread is PT as standard with G (this unit) or NPT as order options; a mounting bracket is included here.
One honest note before you order: AirTAC publishes flow for this series as curves, not a single rated number, so we cannot quote a flow figure on the page. Send us your line pressure and downstream demand and we will confirm sizing against the datasheet before you commit.
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 we do not quote a number here. Send us your line pressure, downstream demand and port size, and we will confirm the flow and sizing against the datasheet on request before you order.
The A in this code sets the automatic drain, which ejects condensate from the bowl without operator attention - a good fit for unattended or continuously running lines. The GFR400 series is also available with a manual drain or the differential-pressure default; tell us which you prefer when ordering, and note the manual-drain version offers a wider 0.05-0.9 MPa (7-130 psi) regulation range.
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.