The AirTAC GFR40010LJF1WT 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 AirTAC GFR40010LJF1WT is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is ordered with a 3/8 in NPT port, the low-pressure regulator type, a 5 um filter element (code W, finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, and an embedded square pressure gauge scaled in MPa. No mounting bracket is supplied with this configuration.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, plus drain, filter-grade, gauge and bracket choices. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for this exact model on request.
| Model | GFR40010LJF1WT 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 — square, MPa 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Clean, regulated air feeds the clamp cylinders on a CNC fixture. The 5 um element keeps swarf-laden shop air from scoring the cylinder seals, while the regulator holds a steady low clamping pressure and the square gauge gives the operator a direct reading.
On a carton sealing or wrapping line, this filter regulator sits at the drop feeding the conveyor's pneumatic pushers and diverters. The differential-pressure drain clears condensate as it accumulates, so an unattended line does not fill its bowl between shifts.
Sample-handling and pipetting stations in a laboratory automation cell run on clean, low-pressure air. The low-pressure regulator type and fine 5 um filtration suit sensitive actuation, and the MPa gauge lets technicians verify supply at a glance.
Start with the port: this code is the 400 size with a 3/8 in NPT thread; step up or down in size (200/300/400/600) if your line needs a different connection or flow band. Choose the drain to suit access: differential-pressure (this unit) needs no daily attention, automatic (A) drains continuously, and manual (M) suits attended installations. Pick the filter grade: 40 um is the standard element, 5 um (W, fitted here) protects finer downstream components. Gauge scale is selectable (MPa, psi or bar) and an external round gauge is available; a bracket (standard) or no bracket (J, this unit) completes the decode.
Flow for GFR units is published as curves, not a single rated figure, so 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 the GFR400 series as curves rather than a single rated figure, so we do not quote a number. Tell us your application flow and pressure and we will confirm the correct sizing from the datasheet on request.
W selects the 5 um filter element instead of the 40 um standard, giving finer protection for downstream components. The L in the code selects the low-pressure regulator type rather than the standard type; its exact adjustment range is not published in the material we hold, so we will confirm it from the datasheet on request.
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.