The AirTAC GFR40010MC2WK AirTAC Filter Regulator PT3/8, 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 GFR40010MC2WK 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 PT3/8 (3/8 in) port, a 5 um filter element (the finer of the two catalogue grades), a manual drain on the PC bowl, a round pressure gauge reading in psi, a built-in reverse/check valve, and a mounting bracket included. The standard regulator covers 0.05-0.9 MPa (7-130 psi) on this manual-drain version, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, and embedded square or external round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010MC2WK AirTAC Filter Regulator PT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| C | Gauge shape: Round. 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. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Point-of-use filter regulation ahead of a air-operated press or clamp cylinder: the 5 um element protects the valve and cylinder seals, the regulator sets the clamping pressure, and the check valve holds the set pressure if the upstream supply dips.
Feeding the diverters, lifters and stopper cylinders on a packaging or bottling conveyor line, where the manual-drain bowl is bled during scheduled changeovers and the psi gauge lets line staff verify set pressure at a glance.
Conditioning compressed air feeding lab apparatus and analytical instruments that are sensitive to water and particles: the 5 um grade polishes the supply while the regulator holds a stable, repeatable working pressure.
Choose the size 400 / PT3/8 step when your line runs 3/8 in piping and your actuators need more air than the 300 size serves; the right size step is ultimately set by the flow your application demands. This unit carries the 5 um element (code W) - pick it over the standard 40 um when downstream valves, cylinders or instruments need cleaner air. The manual drain (code M) means someone bleeds the bowl on a routine; choose automatic or differential-pressure drain codes if the unit sits where regular access is awkward. The round gauge here reads in psi (scale 2); square embedded gauges and MPa or bar scales are the other catalogue choices. PT is the standard thread; G (BSPP) and NPT are order options. A reverse/check valve is fitted and a bracket is included.
One honest note before you order: filter-regulator flow is published as curves, not a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm sizing against the datasheet before you commit.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR flow as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application - line pressure, downstream consumption and allowed pressure drop - and we will confirm the sizing against the datasheet on request before you order.
The M in the code means the PC bowl is drained by hand: an operator opens the drain at set intervals to expel collected water. That suits stations visited during normal maintenance rounds. If the unit will be mounted where routine access is difficult, order the automatic drain (code A) or the differential-pressure drain (blank) variant instead - all three are catalogue options, and the manual-drain version carries the wider 0.05-0.9 MPa (7-130 psi) regulation range.
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.