The AirTAC GFR40010MLJF2WT AirTAC Filter Regulator 3/8 NPT 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 GFR40010MLJF2WT is a size 400 filter regulator: it removes water and particulate from compressed air and holds a reduced downstream pressure in one body. This configuration carries a 3/8 in NPT port, a 5 um filter element (grade code W), a manual-drain polycarbonate bowl, the low-pressure regulator type, and an embedded square gauge scaled in psi. No mounting bracket is fitted and no reverse/check valve is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include automatic, manual or differential-pressure drains, 40 um standard or 5 um fine filtration, PT, G (BSPP) or NPT threads, gauge scales in MPa, psi or bar, and bracket or no-bracket mounting. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing from the datasheet for your application.
| Model | GFR40010MLJF2WT AirTAC Filter Regulator 3/8 NPT 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 — 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". |
| 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). |
| 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) |
Feeds the clamping cylinders on a weld fixture where thin panel work calls for a lower regulated clamping pressure; the 5 um element helps keep the fixture's control valves clear of scale and pipe debris.
Conditions the supply to low-pressure pneumatic valve and damper actuators on a process skid, with the psi-scaled square gauge giving operators a local setpoint readout at the skid.
Sits ahead of the small-bore cylinders on a carton-sealing conveyor, filtering condensed water from the main drop and holding a reduced working pressure for gentle product handling.
Size 400 with a 3/8 in NPT port sits in the middle of the GFR range; step down to 300 or 200, or up to 600, as your piping and air demand require. Choose the drain to match the service: manual (this unit) where an operator can vent the bowl, automatic for unattended drops, or differential-pressure as the catalogue default. Filtration here is 5 um against the 40 um standard - pick 5 um where downstream valves and instruments need finer air. The embedded square gauge reads in psi; MPa and bar scales and an external round gauge are order options. Threads come as PT (standard), G (BSPP) or NPT. Because flow is published as curves rather than one rated number, send us your application details and we will confirm sizing from 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 this series as curves, not as a single rated figure, so we do not quote a number here. Send us your inlet pressure, downstream demand and port size, and we will confirm the sizing from the datasheet before you order.
This configuration carries code M: an operator opens the bowl drain to expel collected water, which suits attended installation points. If the drop is unattended or hard to reach, the same size is available with an automatic drain (code A) or the differential-pressure default - tell us which suits the installation and we will quote the matching code.
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.