The AirTAC GFR40010AF2WTK AirTAC Filter Regulator NPT 3/8 in 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 GFR40010AF2WTK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration is built with 3/8 in NPT ports, a 5 um filter element (code W), an automatic drain, an embedded square gauge reading in psi, and a reverse/check valve fitted; a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the operating temperature range is -5 to 70 C (non-freezing), and the regulation range for this automatic-drain unit is 0.15-0.9 MPa (20-130 psi). The bowl is polycarbonate, as fitted on sizes 200/300/400; only size 600 uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR filter regulator line is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge scale (MPa, psi or bar) and thread (PT standard, with G and NPT as order options). Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR40010AF2WTK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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 — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| F | Gauge shape: Square. 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. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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, regulated air to the clamp and tool-change circuits of a CNC machining centre: the 5 um element strips water and fine particulate before they reach precision valves, the regulator holds a steady working pressure for repeatable clamping, and the automatic drain keeps the bowl clear on machines that run unattended shifts.
Conditioning the air feed to spray guns and atomising valves in a paint line: the 5 um grade helps guard the finish against water and particle carry-over, the regulator holds the gun supply steady across a shift, and the automatic drain handles condensate build-up in humid booth environments.
Supplying a directional-valve manifold on a cartoning or wrapping machine: the regulator keeps actuation pressure stable as cylinders cycle, the reverse/check valve helps hold downstream pressure through supply dips, and the automatic drain protects the valve island from condensate between maintenance windows.
The real, decodable choices in this family are size and port step, drain type, filter grade, gauge scale and thread. Size 400 with 3/8 in NPT ports sits mid-range in the 200/300/400/600 ladder; step up or down a size as your line's air demand changes. Drain: automatic (this unit) clears condensate without operator attention, manual needs a periodic press, and the differential-pressure default drains on a set pressure drop. Filter grade: 5 um (code W, fitted here) for finer protection, 40 um standard for general duty. Gauge: embedded square with a psi scale here; MPa or bar scales and an external round gauge are options. Thread: PT is the standard, with G (BSPP) and NPT as catalogue order options. A bracket is included; J-coded variants omit it. Flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the G-series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details - line pressure, downstream demand and duty - and we will confirm the flow and sizing from the datasheet on request before you order.
Code A fits the automatic drain, which ejects collected condensate without operator attention - useful on lines that run unattended. The family also offers manual drain (code M) and the differential-pressure default. Note that the regulation range is split by drain type: for this automatic-drain unit it is 0.15-0.9 MPa (20-130 psi), while manual-drain variants start lower at 0.05-0.9 MPa (7-130 psi).
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.