The AirTAC GFR40010AC3WT AirTAC Filter Regulator NPT 3/8 in, 5 um 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 GFR40010AC3WT is a size-400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is fitted with a 5 um filter element (finer than the 40 um standard), an automatic drain that expels collected condensate without operator attention, a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range, and an external round pressure gauge scaled in bar. The port is 3/8 in NPT thread, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600, with a choice of port sizes, PT (standard), G or NPT thread, differential-pressure, automatic or manual drain, 40 um or 5 um filtration, and gauge options. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR40010AC3WT AirTAC Filter Regulator NPT 3/8 in, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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, bar 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Feeding clean, pressure-steady air to a CNC machine tool's pneumatic clamps, tool-changer actuators and chip-ejection nozzles, where the 5 um element protects fine valve spools and the automatic drain copes with condensate from a shared compressor ring main.
Conditioning the air branch that serves spray guns and air-assisted applicators in a body or trim paint booth, where water carry-over would cause fisheyes in the finish and the regulator holds a fixed atomising pressure shift after shift.
Supplying filtered, regulated air to the cylinder- and valve-driven sealing, filling and diverting stations on a carton or pouch packaging line, with the automatic drain keeping the bowl clear on a line that runs unattended between operator checks.
Choose the size by the flow your line needs: the GFR400 with its 3/8 in port sits above the 200 and 300 sizes and below the 600, so step up or down if your air demand changes. Pick the drain to suit access: automatic (this model) suits installations that are not checked daily; manual drain suits attended stations; differential-pressure drain is the catalogue default. Pick 5 um filtration (this model) when downstream equipment such as valves, cylinders or instruments needs finer air than the 40 um standard. The round external gauge in bar (this model) is optional; an embedded square gauge is standard, and MPa, psi or bar scales can be ordered. PT is the standard thread; G and NPT are order options, and this model is specified in NPT. A mounting bracket is included.
One honest note before you order: AirTAC publishes flow as curves, not as a single rated number, so send us your air demand and we will confirm the 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 filter-regulator performance as flow curves rather than a single rated figure, so we do not quote one number. Tell us your air demand and line pressure and we will confirm the flow from the GFR400 datasheet on request, before you order.
The automatic drain on the GFR40010AC3WT expels collected condensate by itself, which suits bowls mounted high up, inside enclosures, or on equipment that is not checked every day. The manual drain needs an operator to open it, and the differential-pressure drain is the catalogue default. This model is built with the automatic drain; the other variants can be ordered as separate codes.
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.