The AirTAC GFR40010AC2W AirTAC Filter Regulator PT3/8, 5 um, Auto Drain is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a automatic 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 GFR40010AC2W is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 5 um filter element (the finer of the two catalogue grades), an automatic drain that expels collected condensate without manual attention, and an external round pressure gauge scaled in psi. The port is PT3/8 (3/8 in, PT thread), the standard thread form, with G (BSPP) and NPT available as order options.
This is a genuine AirTAC part. The GFR series is published in sizes 200, 300, 400 and 600, with a choice of drain type, 40 um or 5 um filtration, gauge style and scale, PT/G/NPT thread and bracket options. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR40010AC2W AirTAC Filter Regulator PT3/8, 5 um, Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Point-of-use conditioning on a machining centre: the 5 um element protects solenoid valves and precision actuators from water and fine particulate, while the regulator holds a steady set pressure for clamping and tool-change circuits.
Mounted at the drop ahead of a case-sealing or taping station, the unit cleans the plant air and holds the cylinder pressure steady so sealing heads cycle consistently through a full shift; the automatic drain suits an out-of-the-way mounting.
Feeding analytical instruments, air bearings or pneumatic test benches where clean, finely regulated low-pressure air matters: the 5 um grade and psi-scaled round gauge let technicians set and verify supply pressure directly at the panel.
Size 400 with a 3/8 in port sits in the upper-middle of the GFR range; step up to 600 or down to 300 depending on the flow your line requires - we will confirm the flow curve against your application before you order. The 5 um element (code W) suits air that feeds sensitive valves, instruments or coating equipment; the 40 um standard grade is enough for general shop-air protection. The automatic drain is the low-maintenance choice where the unit is hard to reach; manual and differential-pressure drains are available on other codes. The round gauge here reads in psi; square embedded gauges and MPa/bar scales are the other catalogue choices. PT is the standard thread - specify G or NPT at order time if your piping needs it, and note the mounting bracket is included.
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 filter-regulator flow as performance curves rather than a single rated figure, so no one number is quoted here. Tell us your inlet pressure, set pressure and required consumption, and we will confirm the flow from the datasheet for this exact model before you order.
Both are read straight from the code: A in position five is the automatic drain, which ejects collected condensate on its own instead of relying on a manual or differential-pressure drain, and the trailing W is the 5 um filter grade, one grade finer than the 40 um standard. Choose the automatic drain where the unit is mounted where regular draining is impractical, and the 5 um grade where downstream valves or instruments need cleaner air.
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.