The AirTAC GFR40010MLF1WT AirTAC Filter Regulator NPT3/8 5um 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 GFR40010MLF1WT is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is built around a 3/8 in NPT port and carries the fine 5 um filtration element (code W) instead of the standard 40 um, so it suits lines that need cleaner air ahead of sensitive components. The manual drain lets an operator bleed accumulated condensate from the PC bowl on a set routine, the low-pressure regulator type covers applications that run below standard regulator ranges, and the embedded square gauge reads outlet pressure in MPa. A mounting bracket is included and the unit is rated to 1.0 MPa (145 psi) maximum inlet pressure, operating from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with your choice of drain type (differential-pressure, automatic or manual), filtration grade (40 um standard or 5 um), gauge scale (MPa, psi or bar), thread form (PT standard, with G and NPT as order options) and bracket. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40010MLF1WT AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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, MPa 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Fixture clamps and swing cylinders that hold parts at reduced line pressure get both clean air and a stable, low setpoint from this filter regulator, with the MPa gauge letting operators verify the clamping setting at a glance.
Analytical instruments, sample-handling actuators and pneumatic control panels in a lab skid need air with fine particulate removed; the 5 um element and low-pressure regulation protect sensitive components downstream of a 3/8 in supply line.
Cartoners, case packers and labelers running light-duty actuation at reduced pressure draw from this unit, with the manual drain worked into the shift-start checklist to keep condensate out of the machine's valve bank.
Start with the port step: this unit is the 400 size with a 3/8 in NPT port, one step up from 1/4 in and one below 1/2 in - match it to your line size and required air demand, and step up a size if your flow curve sits close to the limit. Because flow for this family is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. The 5 um element (code W) is the finer of the two published grades (40 um is standard), so choose it when downstream valves, cylinders or instruments need cleaner air. Drain type is a real choice: this unit has a manual drain, which needs a scheduled bleed of the bowl; automatic or differential-pressure drains suit unattended installations. The square gauge here reads MPa; psi and bar scales are available, and an external round gauge is optional. Thread is NPT on this code - PT is the standard and G (BSPP) is the alternative order option. A mounting bracket is included.
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 series as performance curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure, setpoint and air demand and we will confirm the datasheet flow figures for this 3/8 in unit against your application on request.
The M in the code selects the manual drain: condensate collected in the PC bowl is released by an operator opening the drain, rather than automatically. It suits attended installations where a scheduled bleed can be built into the routine; for unattended lines, the same series is available with automatic or differential-pressure drains.
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.