The AirTAC GFR40010MNWT AirTAC Filter Regulator 3/8 in 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 GFR40010MNWT is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the size 400 unit with a 3/8 in NPT port, a manual drain bowl in polycarbonate, a 5 um filter element (the finer of the two catalogue grades), and the standard regulator with an adjustment range of 0.05-0.9 MPa (7-130 psi). No gauge is fitted with this code, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, drain choices (differential-pressure, automatic or manual), filter grades of 40 um standard or 5 um optional, gauge options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010MNWT AirTAC Filter Regulator 3/8 in 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 | 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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) |
Cleaning and regulating the shop-air feed to a machining centre's pneumatic actuators and tool-change circuits, with the 5 um element protecting sensitive valves on the machine.
Conditioning the air feeding conveyor stoppers, pushers and carton-closing cylinders on a packaging line, with the regulator set to the pressure the cylinder circuit was designed for.
Supplying cleaned, regulated air to bench-mounted test rigs and lab pneumatic fixtures, where the finer 5 um grade and manual drain suit a supervised, regularly checked installation.
Choose the GFR400 when your line calls for a 3/8 in port; the size 400 step sits above the 300 and below the 600 in the GFR range, so match the port and the required flow curve to your application. This code carries a manual drain, which suits installations where an operator can bleed the bowl on a routine basis; if the unit will sit unattended, ask about the automatic or differential-pressure drain versions instead. The 5 um element (code W) is the finer grade and suits downstream equipment more sensitive to particulate than the 40 um standard element. No gauge is fitted with this code; gauge options with different scales exist in the series if you want a pressure readout at the unit. The T suffix selects NPT thread; PT is the standard thread and G (BSPP) is also a catalogue option. A mounting bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against your 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 GFR series as curves, not as a single rated figure, so we do not quote a rated flow number for this unit. Tell us your application and we will confirm the relevant datasheet flow figures for the GFR400 at 3/8 in before you order.
The M in the code selects the manual drain bowl: condensate is released by operating the drain by hand. It suits installations that are checked regularly. If the unit will run unattended, ask about the automatic (code A) or differential-pressure (blank) drain versions of the same GFR400 filter regulator.
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.