The AirTAC GFR400C10LC3WTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR400C10LC3WTK is a size-400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 3/8 in NPT port, a 5 um filter element (code W) for finer particle removal than the standard 40 um grade, a differential-pressure drain that discharges collected condensate automatically as the pressure differential rises, and a low-pressure regulator type for applications that work below standard regulating ranges. It ships as a code-complete unit with a round external gauge on the bar scale, an integrated reverse/check valve (code K) that holds the downstream setting if the supply pressure dips, and a mounting bracket included.
This is a genuine AirTAC part from the GFR400 series, rated for compressed air at up to 1.0 MPa (145 psi) inlet pressure and -5 to 70 C (non-freezing), with a polycarbonate bowl at this size. The GFR family is also available in sizes 200, 300 and 600, with manual or automatic drains, a 40 um standard element, embedded square or external round gauges, 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 figures for your application on request.
| Model | GFR400C10LC3WTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Filtered, regulated low-pressure air feeding pick-and-place grippers on an assembly-cell robot, where the 5 um element protects valve internals and the check valve holds the set pressure if the main supply dips.
A single-body filter regulator ahead of the cylinders and air cylinders that run carton-forming and sealing stations on a packaging conveyor, with condensate handled automatically by the differential-pressure drain.
Conditioning air for spray guns and low-pressure finishing stations, where the fine 5 um grade keeps particulates out of the finish and the low-pressure regulator type suits the gentle working pressures involved.
Choose the GFR400 size and its 3/8 in port by stepping up or down the 200/300/400/600 range against the air demand of your circuit; the larger the size, the larger the port and the greater the flow path. This unit already carries the finer 5 um element (W) instead of the 40 um standard grade, the differential-pressure drain, the round bar-scale gauge, the reverse/check valve (K) and the low-pressure regulator type (L), with the mounting bracket included. Thread is NPT here; PT is the standard catalogue thread and G (BSPP) is also available to order. Because flow is published as curves and not as a single rated number, 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the flow and sizing data from the datasheet on request.
W is the filter-grade code: this unit carries the optional 5 um element instead of the 40 um standard grade, giving finer particulate removal ahead of your regulator outlet and downstream equipment.
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.