The AirTAC GFR40010F3WTK AirTAC Filter Regulator NPT3/8, 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 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 GFR40010F3WTK 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 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain on the polycarbonate bowl, an embedded square gauge scaled in bar, a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range, a built-in reverse/check valve, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010F3WTK AirTAC Filter Regulator NPT3/8, 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, bar 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". |
| (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). |
| F | Gauge shape: Square. 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. |
| 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 pick-and-place cylinders and sealing jaws of a carton-forming and wrapping machine, where the 5 um element protects directional valves and the check valve holds the set pressure through brief supply dips.
Supplying the diverter gates and stopper cylinders on a parcel-sorting conveyor, with the square bar gauge letting maintenance verify set pressure at a glance and the differential-pressure drain keeping condensate off the gate actuators.
Conditioning the air feeding a laboratory sample-handling station's pneumatic grippers and pipetting modules, where the 5 um grade and stable regulated output suit sensitive motion components and the bracket simplifies panel mounting.
Size and port are the first decision: the 400 frame with a 3/8 in NPT port sits mid-range in the GFR line, and the right step depends on the air demand of the circuit, so have us check the published flow curves against your consumption before ordering. This unit is already fixed at the finer 5 um grade (code W) instead of the 40 um standard, which suits instrumentation, valves and pneumatics that need cleaner air. The differential-pressure drain is the default: it bleeds condensate automatically as the pressure differential across the element builds, with no daily manual draining, though automatic (A) and manual (M) drains exist in the series. The square gauge here reads in bar; MPa and psi scales are available on other configurations, and an external round gauge is optional. Thread is NPT on this unit; PT is the catalogue standard and G (BSPP) is also orderable. A mounting bracket is included, and the K code adds a reverse/check valve that holds downstream pressure if the supply is lost. Ask us to confirm sizing against the application 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 filter-regulator capacity as flow curves, not as a single rated number, so we do not quote a figure here. Tell us your working pressure and air consumption and we will confirm the datasheet curve and check the GFR400 size against your application before you order.
The W in the code selects the finer 5 um filter grade instead of the 40 um standard, which suits valves, actuators and devices that need cleaner air. The K adds a reverse/check valve that helps hold the regulated downstream pressure if the upstream supply drops. Both are catalogue options on the GFR series, chosen at ordering.
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.