The AirTAC GFR40010MF3WT AirTAC Filter Regulator 3/8 in NPT 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 GFR40010MF3WT is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This configuration has 3/8 in NPT ports, a 5 um filter element (the finer of the two catalogue grades), a manual drain bowl in polycarbonate, an embedded square gauge scaled in bar, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the working temperature range is -5 to 70 C, non-freezing.
It is a genuine AirTAC part. The GFR family is published in four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 in, and with choices of drain type, filter grade, gauge scale, thread (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR40010MF3WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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 | Standard 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, bar 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 130 psi). 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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 filtered, regulated air to the pneumatic pushers and grippers that move cartons down the line; the 5 um element keeps water and debris out of the cylinders, and the manual drain is bled during scheduled line checks.
Supplies clean, pressure-stable air to the tool-clamp cylinder on a machining centre; the 5 um grade protects the clamping mechanism, and the bar-scaled square gauge lets the setter verify clamp pressure at a glance.
Conditions the air feeding spray guns in a finishing booth: the 5 um element strips water and particulate that would spoil a finish, while the regulator holds the gun supply at the pressure the painter sets.
Size 400 with 3/8 in NPT ports sits in the middle of the GFR range; step up or down a size when your flow demand or existing piping calls for it. The 5 um element (code W) suits points of use that see finer contamination than the standard 40 um grade, and the manual drain means the bowl is bled by hand on a maintenance schedule rather than relying on an automatic or differential-pressure drain. The embedded square gauge reads in bar; MPa and psi scales are catalogue alternatives, and an external round gauge is optional. G and NPT threads are order options alongside the PT standard, and the mounting bracket is included.
Flow for this family 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 as curves rather than a single rated number, so we do not quote a figure here. Tell us your line pressure and air demand and we will confirm the datasheet curve for this 3/8 in NPT filter regulator on request.
The M in the code sets a manual drain: the polycarbonate bowl is bled by hand during maintenance checks. AirTAC also offers automatic and differential-pressure drains in the same GFR400 size as separate catalogue codes, so pick those variants if unattended draining matters on your installation.
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.