The AirTAC GFR40010LJC2WT AirTAC Filter Regulator NPT 3/8 in, 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 GFR40010LJC2WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body, with a single drain bowl. This configuration is built for a 3/8 in NPT port, carries the 5 um filter element (code W) for finer water and particulate removal than the standard 40 um grade, and drains condensate by differential pressure, so the bowl empties itself as the pressure differential across the element builds. It is the low-pressure regulator type, fitted with an external round gauge reading in psi, and supplied without a 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 suits this size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G (BSPP) and NPT thread variants alongside the PT standard, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and gauge choices by style and scale. Flow for this model is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application.
| Model | GFR40010LJC2WT AirTAC Filter Regulator NPT 3/8 in, 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, 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). |
| C | Gauge shape: Round. 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) |
Fixture clamps and swing cylinders that hold parts at reduced line pressure get one device doing both jobs: the 5 um element keeps scale and condensed water out of the clamp seals, while the low-pressure regulator holds the holding force the fixture was designed around, read directly off the psi gauge.
On a cartoning or wrapping line, banks of small actuators and grippers need clean, steady air at a set pressure. This filter regulator mounted at the machine drop feeds the whole bank, the differential-pressure drain keeps condensate moving out during shifts, and the psi gauge gives operators a visible setpoint.
Instrument and pilot-air takeoffs off a plant header benefit from finer filtration and a controlled, lower pressure than the header itself. Tapping the header with this 3/8 in NPT unit puts a 5 um element and a low-pressure regulator right at the point of use, with the round gauge letting technicians verify the loop pressure at a glance.
Start with the port step: GFR400 in 3/8 in NPT sits in the middle of the 200/300/400/600 size range, so step up or down a size if your line flow demands it - and since flow is published as curves rather than one rated number, send us your air demand and we will confirm the fit before you order. This unit already carries the 5 um element; if your application tolerates coarser air, the 40 um standard grade is the alternative. Drain is differential-pressure here; automatic (code A) and manual (code M) versions exist if you prefer hands-off or scheduled draining. The round psi gauge is fitted on this code; embedded square gauges and MPa or bar scales are the other options. PT is the standard thread and G (BSPP) or NPT are the catalogue order options - this code is the NPT variant. Brackets are optional; this configuration omits one (code J). The low-pressure regulator type is chosen for circuits that run below standard line pressure; its exact adjustment range is not published, so confirm it with us against your setpoint.
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 performance curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, set pressure and air demand, and we will confirm the flow from the datasheet and check the sizing against your application before you order.
The W in the code selects the 5 um filter element instead of the 40 um standard grade, and C2 selects an external round gauge with a psi scale. Both are real decode choices: 40 um is the coarser standard option, and the gauge is also available as the embedded square style with MPa or bar scales. The low-pressure regulator type (code L) is likewise a selection - its exact adjustment range is not published, so confirm it with us for your setpoint.
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.