The AirTAC GFR40010MLJC2WT 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010MLJC2WT is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single compact body. This size 400 unit is specified with a 3/8 in NPT port, a 5 um filter element (code W), a manual drain on the bowl, the low-pressure regulator type, and an external round gauge scaled in psi. No mounting bracket is fitted (code J), so plan your own mounting arrangement.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um standard or 5 um fine filtration, and gauge options. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010MLJC2WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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) |
Feeds and regulates the air supply to clamp cylinders on a milling or drilling fixture, with the 5 um element helping keep water and chips-carried contamination out of the clamp circuit.
Mounted at the air inlet of a form-fill-seal or cartoning machine to filter the supply and hold a steady, lower working pressure to the machine's actuator circuits.
Conditions the air feeding bench-top test rigs and laboratory automation, where the fine 5 um grade and a psi-scaled gauge support controlled, low-pressure set points.
Size 400 with a 3/8 in port sits in the middle of the GFR range; step up to 600 or down to 300/200 depending on the flow your line needs - we can check the published flow curves against your demand on request. This unit has the 5 um element rather than the 40 um standard, which suits air that feeds sensitive components; the 40 um grade is the usual choice for general shop-air prep. The manual drain means an operator opens the bowl drain periodically, unlike the automatic or differential-pressure drain options. The gauge here is the external round type scaled in psi; embedded square gauges and MPa or bar scales are alternatives. Thread is NPT on this code; PT is the standard and G (BSPP) is an order option. A bracket can be ordered where this no-bracket code needs one.
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 GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your working pressure and air demand and we will confirm the flow from the datasheet curves for this exact model before you order.
The M in the code specifies a manual drain: the bowl is emptied by hand at intervals. The GFR family also offers an automatic drain (code A) and a differential-pressure drain (the default when no drain letter appears), which suit installations where regular manual attention is not practical.
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.