The AirTAC GFR400C10MF3WTK AirTAC Filter Regulator 3/8 in NPT 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 See datasheet 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 GFR400C10MF3WTK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in one body. This unit is threaded 3/8 in NPT, filters to 5 um (the finer of the two catalogue grades), drains by hand through its manual drain, and carries an embedded square gauge scaled in bar. The standard regulator covers a 0.05-0.9 MPa (7-130 psi) setting range, maximum inlet pressure is 1.0 MPa (145 psi), and the service temperature is -5 to 70 C, non-freezing. The polycarbonate bowl suits the 400 size, and a reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include 40 um or 5 um filtration, differential-pressure, automatic or manual drains, square or round gauges scaled in MPa, psi or bar, G (BSPP) or NPT threads in place of the PT standard, and a reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C10MF3WTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 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 — factory standard, Factory standard 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. 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. |
|---|---|
| C1 | Port size See datasheet. 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). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding tool-clamp and chip-clearing cylinders on a CNC machining centre, where the 5 um element keeps fine contamination out of downstream valves and the regulator holds a steady pressure setting at the machine.
Filtering and regulating air to carton-sealing and case-packing cylinders on a packaging conveyor line, with the manual drain emptied during scheduled changeovers and the bar gauge giving a local pressure readout.
Supplying pick-and-place grippers and clamps in an automotive assembly cell, where the fitted check valve supports the downstream circuit and the regulator keeps actuator pressure stable through the shift.
Size and port are the first choice: step up from 200 through 400 to 600 as your flow demand and port size grow - this unit is size 400 with a 3/8 in NPT port. Choose the drain to match the duty: manual (as here) for attended maintenance, automatic for unattended draining, or differential-pressure as the default. Pick 40 um for general protection or 5 um (this unit) where finer filtration matters, set the gauge scale you read (MPa, psi or bar), and order G or NPT thread if PT is not your standard. A mounting bracket is included on this configuration. Because flow is published as curves rather than one rated number, send us your application conditions 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. 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 as curves rather than a single rated figure, so we do not quote one number here. Send us your line pressure, port size and air demand, and we will confirm the flow from the datasheet for your application before you order.
The manual drain on this unit is emptied by hand during maintenance rounds, which suits lines that are attended regularly. If the unit will sit where nobody drains it routinely, the same GFR400 body is available with an automatic or differential-pressure drain - ask us for that code variant.
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.