The AirTAC GFR400C10LJF3WTK 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 GFR400C10LJF3WTK is an AirTAC GFR400 filter regulator: water and particulate removal plus pressure regulation combined in a single body. This configuration is threaded NPT3/8 (3/8 in), carries the 5 um (W) filter element instead of the standard 40 um, drains condensate from its metal bowl by differential pressure, and regulates with the low-pressure (L) type regulator. An embedded square gauge scaled in bar is fitted, a reverse/check valve is included, and no mounting bracket is supplied. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, offered with manual or automatic drain options, 40 um or 5 um filtration, gauge and scale choices, and PT, G or NPT threads to order. 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 | GFR400C10LJF3WTK 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) |
Filtered, regulated supply for pneumatic clamps and tool-change actuators on a machining cell, where a 5 um element is specified for downstream valves and the low-pressure type suits lower set pressures.
Supplying stopper, pusher and diverter cylinders on a bottling or packaging conveyor line, with the square bar gauge giving operators a local pressure reference at the machine.
Regulated air to valve manifolds and small actuators on laboratory automation skids, where the low-pressure regulator type and fine 5 um filtration match lower set-pressure instrument circuits.
Size 400 with a 3/8 in port sits mid-range in the GFR line; step down to 300/200 or up to 600 depending on the air demand of your circuit - we can check the published flow curves against your requirement. This unit is built with the 5 um (W) element rather than the standard 40 um, a differential-pressure drain (manual and automatic drains are order options), the low-pressure regulator type, and a square gauge scaled in bar (MPa or psi scales are alternatives). The thread here is NPT; PT is the standard thread and G (BSPP) is also available to order. The exact adjustment range of the low-pressure type is not published, so confirm your set pressure with us. No mounting bracket is included; brackets are optional.
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 rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the sizing from the datasheet on request.
It is the low-pressure version of the GFR400 regulator, intended for circuits set below standard ranges. The exact adjustment range for this variant is not published in our data, so confirm your set pressure with us before ordering. This unit also differs from the standard build by its 5 um element, NPT thread, bar-scale square gauge, fitted reverse/check valve and no mounting bracket.
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.