The AirTAC GFR40010C2WGK AirTAC Filter Regulator G3/8, 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 differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010C2WGK is a filter regulator: one body that first removes water and particulate from compressed air, then regulates downstream pressure. This 400-size unit is configured with a G3/8 (BSPP) port, a 5 um filter element (the finer of the two catalogue grades, versus the 40 um standard), a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough, and a reverse/check valve that holds downstream pressure when the supply is cut. The fitted round gauge reads in psi, and the unit is supplied with a mounting bracket.
This is a genuine AirTAC part from the GFR400 series. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet numbers for your application before ordering.
| Model | GFR40010C2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure 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 0.15 - 0.9 MPa (20 - 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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. |
| G | G (BSPP) 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) |
Feeding cylinders and valves on a mechanical press cell: the 5 um element keeps fine particulate out of directional valves, the regulator holds a steady working pressure stroke to stroke, and the check valve holds the circuit if the plant air drops.
Air preparation for conveyor diverters, clamp cylinders and carton sealers along a packaging line, where the G3/8 port matches the main drop and the differential-pressure drain clears condensate without stopping the line.
A filter-regulator stage at individual machine drop points in a factory air network, protecting downstream lubricators, actuators and instrumentation from water and debris while holding each machine's set pressure.
Start with the port step: this unit is 3/8 inch in the 400 size, which suits lines with moderate-to-high air demand; step down to GFR200/GFR300 for lighter circuits or up to GFR600 for larger supply mains. This configuration carries the 5 um element (code W) - choose it where finer particulate protection matters, or order the 40 um standard grade where coarser pre-filtration is acceptable. Drain is differential-pressure (the default); automatic or manual drains are available on other codes. The round psi gauge is fitted here; an embedded square gauge in MPa, psi or bar scale is the alternative. Thread is G (BSPP) - PT is the catalogue standard, with G and NPT as order options. A bracket is included.
Because flow is published as curves rather than a single rated figure, we cannot quote one number here - 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated figure, so we do not quote one number. Send us your line pressure, set pressure and expected air demand, and we will confirm the flow from the datasheet to check the 3/8 inch port is correctly sized before you order.
The W in the code GFR40010C2WGK selects the 5 um filter grade, the finer of the two catalogue options; the standard grade is 40 um. The 5 um element suits downstream valves, cylinders and instrumentation that need finer particulate removal, while 40 um is adequate for coarser general-purpose protection. Both grades are available across the GFR family.
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.