The AirTAC GFR400C10LF3WT 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 GFR400C10LF3WT is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a 3/8 in NPT port. This configuration carries the W grade 5 um filter element for finer particle removal than the standard 40 um element, a differential-pressure drain that bleeds collected condensate automatically as pressure differential builds, the low-pressure regulator type for circuits held at a reduced set pressure, an embedded square gauge reading in bar, and a mounting bracket. It has no reverse/check valve fitted. 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. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, square or optional external round gauges with MPa, psi or bar scales, G or NPT thread options, and bracket choices. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application before ordering.
| Model | GFR400C10LF3WT 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) |
Air-prep point for clamp and fixture cylinders on a CNC machining cell: the 5 um element protects directional valves from fine particles while the low-pressure regulator holds the clamp circuit at the reduced pressure the fixture designer specified, with the bar gauge giving the operator a direct set-point readout.
Point-of-use supply for sealing jaws and pusher cylinders on a packaging line: the combined filter and regulator in one body saves panel space, the differential-pressure drain keeps condensate off the valves without a scheduled blow-down, and the 3/8 in NPT port matches the machine's drop line.
Branch take-off from a factory ring main feeding a circuit that must run below normal line pressure: the low-pressure regulator type trims the reduced set pressure locally, the 5 um filtration protects downstream instrumentation, and the included bracket allows direct frame or panel mounting.
Size and port: the 400 frame with a 3/8 in NPT port sits mid-range in the GFR line - step up to 600 or down to 300/200 if your line size or flow demand differs; we can check the published flow curves against your consumption before you commit. Drain: this unit uses the differential-pressure drain (the default); automatic (code A) or manual (code M) drains are available if you prefer scheduled or continuous discharge. Filtration: the 5 um W element fitted here suits finer-particle protection; the standard 40 um element costs less where coarse pre-filtration is enough. Regulation: this is the low-pressure type - its exact adjustment range is not published, so confirm it with us. Gauge: the embedded square gauge reads in bar; psi or MPa scales and an external round gauge are options. Thread: PT is the catalogue standard and G (BSPP) is also orderable, so match your piping. A bracket is included with this code; the J suffix removes it.
Because rated flow is published only as curves and not as a single figure, 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 curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, set pressure and air consumption and we will confirm the flow from the datasheet curves for your application before you order.
The W in the code GFR400C10LF3WT selects the optional 5 um filter grade, which removes finer particles than the 40 um standard element and suits sensitive valves and instrumentation. If coarse protection is enough for your circuit, order the same unit without the W suffix for the 40 um element.
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.