The AirTAC GFR40010LJC3WT 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 GFR40010LJC3WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. Compressed air passes a 5 um filter element (the W grade, finer than the 40 um standard) that strips water and particulate, then feeds an integral low-pressure regulator. This unit is built for 3/8 in NPT ports, uses a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and carries a round pressure gauge reading in bar. No mounting bracket is included, so plan to bracket or manifold-mount it in your assembly.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. The low-pressure regulator type in this code has a range we confirm from the datasheet on request, as with all published flow figures.
| Model | GFR40010LJC3WT 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 | Low-pressure 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 — round, bar 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Filter and regulate the supply line to a bench-mounted pneumatic press, keeping moisture and fine particles out of the cylinder valves while holding a steady low-pressure setting for the forming stroke.
Condition the air feeding pick-and-place and carton-closing cylinders on a packaging conveyor, where the 5 um element protects directional valves and the regulator keeps actuation pressure consistent across the shift.
Supply filtered, regulated air to atomizing or spray equipment that runs at reduced pressure, where the low-pressure regulator type and fine 5 um filtration suit a clean, gently regulated air stream.
Size 400 with 3/8 in NPT ports sits in the middle of the G-series flow ladder: step up to size 600 or down to 300 depending on the air demand of the machine it feeds - we will check the published flow curves against your application before you order. This configuration is already fixed at the 5 um element (W) and the differential-pressure drain; if you would rather have manual or automatic draining, or the 40 um standard element, those are orderable variants in the same family. The round gauge here reads bar; MPa and psi scales are available if your operators work in other units. PT is the standard thread and G or NPT are order options - this code specifies NPT. A bracket is not fitted (J), so add one if you need panel or surface mounting. Flow is published as curves rather than a single rating, so 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 as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure, downstream demand and acceptable pressure drop, and we will confirm the sizing from the datasheet on request before you order.
The L marks the low-pressure regulator type rather than the standard version of this filter regulator. The exact regulation range for the low-pressure type is not published in the material we hold, so please ask us to confirm it from the datasheet; the standard GFR range tops out at 0.9 MPa, while this variant is intended for reduced-pressure settings.
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.