The AirTAC GFR400-10T 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 GFR400-10T is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is fitted with a 5 um filter element (code W) for finer filtration than the 40 um standard, a differential-pressure drain that bleeds accumulated condensate as the pressure differential rises, an embedded square pressure gauge scaled in MPa, and NPT 3/8 in ports. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl keeps the condensate level visible at a glance.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filter grades, square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT thread options, and low-pressure (L) variants. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400-10T 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, MPa 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". |
| (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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Point-of-use conditioning for a machining centre's pneumatic circuits: the 5 um element protects solenoid valves and air bearings from fine particulate and water, while the regulator holds a steady set pressure for clamping and tool-change actuators.
Feeding divert gates, check-weigher reject pushers and bag-seal cylinders on a packaging conveyor, where a stable regulated pressure keeps cycle behaviour repeatable and the differential-pressure drain handles condensate without daily operator attention.
A filtered, regulated drop for pick-and-place cylinders and air-driven screwdrivers in an assembly cell: the 5 um grade suits the sensitive directional valves, and the square MPa gauge gives operators a visible set-point at the cell.
Start with the size and port: the 400 frame with 3/8 in NPT ports suits lines where the required flow sits above the 300 frame's capacity - we will confirm the exact fit from the published flow curves before you order. Choose the drain to match the installation: differential-pressure (this unit's default) needs no operator attention but only clears condensate when the differential rises; automatic drains continuously; manual drains suit supervised or low-moisture points. The 5 um (W) element here is the finer of the two published grades - choose it where downstream valves and instruments are sensitive, or step back to 40 um for general shop-air protection.
This unit carries the embedded square gauge scaled in MPa; external round gauges and psi or bar scales are orderable alternatives. Thread is NPT here, with G (BSPP) and PT available as catalogue options - PT is the standard, not a promise of what ships. No mounting bracket is fitted with the J code, so plan your panel or manifold fixing accordingly. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and required flow, and we will confirm the correct size from the datasheet curves before you order.
The W code in GFR40010JF1WT selects the finer 5 um filter grade instead of the 40 um standard, which suits sensitive downstream valves and instruments. The drain is the differential-pressure type (the default): it discharges accumulated condensate automatically as the pressure differential rises, with no operator action, unlike a manual drain which you empty yourself.
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.