The AirTAC GFR40010LJF2WT 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, so one 3/8 in NPT connection handles both jobs in the air-preparation line. This configuration, GFR40010LJF2WT, is the low-pressure type fitted with a 5 um filter element (the finer of the two published grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square pressure gauge reading in psi, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part from the GFR400 size, the largest of the series steps below size 600. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT threads, drain types, 40 um or 5 um elements, gauge styles and scales, and bracket options. Because rated flow is published only as curves rather than a single figure, we confirm the datasheet and flow data for your operating conditions on request.
| Model | GFR40010LJF2WT 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, psi 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. |
| 2 | Gauge scale: psi. 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) |
On a CNC cell where clamps and swing cylinders hold workpieces during cutting, this filter regulator cleans the supply to 5 um and holds a steady low-pressure setting so clamp force stays consistent part after part, with the psi gauge giving the operator a direct reading at the cell.
Packaging machines run many small cylinders for flap folding, tucking and case sealing. Feeding them through this 3/8 in unit removes water and fine particles that gum valve spools, while the low-pressure regulator keeps actuator speeds gentle enough not to crush cartons, and the differential drain handles condensate without daily attention.
Bench-scale reactors, sample handling skids and pilot-plant panels often need clean, low-pressure air for actuating diaphragm valves and purging lines. The 5 um element protects fine instrument valves, the polycarbonate bowl shows condensate at a glance, and the psi gauge lets technicians verify the setting during changeovers.
Start with the port step: this unit is 3/8 in NPT, so match it to the line size and the flow your circuit actually needs - larger sizes carry more flow, and we can confirm the curve against your demand before you order. The 5 um element here suits circuits that need finer particle removal than the 40 um standard, such as downstream of sensitive valves or tools; the 40 um grade remains the default choice where general protection is enough. The differential-pressure drain is the set-and-forget option; choose automatic or manual drain codes if your duty cycle or maintenance routine calls for it. The square gauge is fitted and reads in psi; round external gauges and MPa or bar scales are available codes. PT is the standard thread for the series, with G and NPT as order options - this unit is specified NPT. No mounting bracket is included with this code, so plan your panel or manifold fixing accordingly. Because flow is published as curves rather than a single rating, ask us to confirm sizing against the 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 figure, so we do not quote a number that could mislead your sizing. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the flow data from the datasheet for this exact configuration before you order.
In the code GFR40010LJF2WT, the W selects the 5 um filter element (the finer grade; 40 um is the series standard) and F2 selects the embedded square gauge with a psi scale. Other published codes cover the 40 um grade, a round external gauge, and MPa or bar scales, so if your plant standardises on a different element or scale, we can identify the matching GFR400 code for you.
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.