The AirTAC GFR400C10AF1WTK AirTAC Filter Regulator NPT3/8 5 um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet 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 GFR400C10AF1WTK is a size 400 filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body, sized for 3/8 in NPT ports. This configuration carries the 5 um filter element (code W) for finer particle removal than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, an embedded square pressure gauge scaled in MPa, a built-in reverse/check valve, and a mounting bracket. The polycarbonate bowl suits the -5 to 70 C non-freezing operating range, and the maximum working (inlet) pressure is 1.0 MPa (145 psi). The standard regulator adjusts from 0.15-0.9 MPa (20-130 psi) with automatic drain.
This is a genuine AirTAC part from the GFR400 series within the G-series line, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, drain types (differential-pressure, automatic, manual), filter grades (40 um standard, 5 um optional), gauge styles and scales, and G/NPT thread 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 on request.
| Model | GFR400C10AF1WTK AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 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 — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Placed at the drop feeding a CNC machining cell's clamps and tool-change cylinders, this unit filters machining-air moisture and fine particles to 5 um and holds a steady regulated pressure so clamping force stays repeatable across shifts. The automatic drain keeps the bowl clear on unattended runs, and the check valve holds downstream pressure if supply dips.
Mounted at the take-off feeding a carton-sealing and case-packing conveyor line, this filter regulator removes water and fine debris before the sealing cylinders and sets a stable working pressure so flap-fold and tuck actions stay consistent at line speed. The automatic drain and included bracket suit fixed mounting along the line frame.
Installed ahead of the atomizing-air take-off in a paint finishing booth, the 5 um element protects spray-gun air passages from particulates while the regulator holds the steady pressure that consistent atomization depends on. The square MPa gauge gives the operator a clear setpoint reference, and the check valve guards against backflow in the drop.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with 3/8 in NPT ports, one step up from size 300 (1/4 in typical) and one below size 600 (3/4 in typical) - larger sizes carry larger ports and higher flow capacity, which we can confirm from the published curves before you order. Drain type is a real choice: automatic (fitted here) suits unattended duty, manual drain suits supervised points, and differential-pressure drain is the default. Filter grade is 40 um standard or 5 um with code W for finer protection of downstream components; this unit carries the 5 um element. The embedded square gauge is standard (MPa scale fitted here; psi and bar scales exist as options) and an external round gauge is available. Thread is a specification choice: PT is the standard, with G (BSPP) and NPT as catalogue options - this unit is ordered in NPT. A mounting bracket is included. Because flow is published as curves and not 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 GFR400 series as performance curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your application's flow and pressure requirements and we will confirm the correct size from the datasheet curves on request before you order.
The W in the code GFR400C10AF1WTK selects the optional 5 um filter element, one grade finer than the 40 um standard, for applications that need cleaner air at the point of use. The A selects the automatic drain, which expels collected condensate on its own instead of relying on the differential-pressure default or periodic manual draining. Both are catalogue decode choices, and the other combinations (40 um or 5 um, with each drain type) can be ordered in the same GFR400 size.
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.