The AirTAC GFR40010MNT AirTAC Filter Regulator, NPT3/8, Manual Drain is a genuine G-series filter regulator: water separation, 40 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 GFR40010MNT is a size 400 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/8 in NPT port, a 40 um standard filter element, a manual drain bowl in polycarbonate, and no gauge fitted, so you set and monitor downstream pressure with your own instrumentation. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR series is offered in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, differential-pressure, automatic or manual drains, an optional 5 um (W) element, gauge and scale options, and a low-pressure type where the application calls for it. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR40010MNT AirTAC Filter Regulator, NPT3/8, Manual Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Installed ahead of a bench-mounted pneumatic press, the filter section strips water and pipe scale from the shop air line while the regulator holds a steady setting on the cylinder circuit, with the manual drain emptied during operator checks.
Mounted at the drop feeding a packaging line's conveyor diverters and clamp cylinders, this unit conditions the air and keeps actuator pressure consistent through the shift, with the 3/8 in NPT port matching the line's main drop.
Fitted at the point-of-use drop serving an assembly cell's air tools and small cylinders, the GFR40010MNT cleans and regulates the supply in one body, and the included bracket fixes it to the cell frame beside the shut-off valve.
Size 400 with a 3/8 in NPT port suits lines whose air demand sits in the upper mid-range of the G-series flow curves; step up to size 600 or down to size 300 only after checking demand against those curves. The manual drain on this unit means an operator opens the bowl drain during checks, which suits supervised installations; choose automatic or differential-pressure drain codes where the bowl cannot be attended. The 40 um element is the standard grade for general plant air - specify the 5 um (W) code only where downstream equipment needs finer filtration.
This unit ships without a gauge (code N), so plan your own pressure indication downstream of the regulator, and note the thread here is NPT while PT is the catalogue standard and G is also orderable. A mounting bracket is included. Because flow is published as curves and not a single rated figure, 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 number here. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
The M in the code selects a manual drain, meaning the polycarbonate bowl is emptied by hand during maintenance rounds, and the N selects no gauge, so you add your own pressure indication. If you prefer automatic or differential-pressure draining or a fitted gauge, those are available as separate codes in the same size.
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.