The AirTAC GFR400C10MC3WT AirTAC Filter Regulator NPT3/8, 5 um 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 GFR400C10MC3WT is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the size 400 unit with a 3/8 in NPT port, a fine 5 um filter element (code W), a manual drain on the bowl, and a round pressure gauge with a bar scale fitted. The standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi) with this manual-drain version, against a maximum inlet pressure of 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing. The bowl on this size is polycarbonate, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR400 series is one of four sizes (200/300/400/600), each stepping up in port size and flow capacity, with options including manual, automatic or differential-pressure drains, 40 um or 5 um filtration, square or round gauges with MPa, psi or bar scales, and G or NPT threads alongside the PT standard. AirTAC publishes flow as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C10MC3WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| 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 clamp and fixture cylinders on a machining centre: the 5 um element keeps fine debris out of the clamp circuit while the regulator holds the clamping pressure the fixture was set up for.
Conditioning the air feeding cylinders and valves on a carton or bagging line, where the 3/8 in port suits the machine's main air drop and the manual drain is opened at scheduled line checks.
Supplying filtered, regulated air to a bench-mounted pneumatic press or riveter, with the bar-scale gauge letting operators read and verify the set pressure at a glance.
Choose the size by the port and flow step your line needs: this is size 400 on a 3/8 in NPT port, one step up from the 300 series. This unit carries the 5 um element (code W) rather than the 40 um standard, which suits downstream components that want cleaner air; the trade is a finer element to maintain. The manual drain means an operator opens the bowl drain during checks rather than relying on an automatic or differential-pressure drain. The fitted round gauge reads in bar; square embedded gauges and MPa or psi scales are available if you prefer. PT is the standard thread and G or NPT are order options - this code is specified in NPT. A mounting bracket is included.
Because AirTAC publishes flow as curves and not as a single rated number, we do not quote a flow figure here. Send us your application details and we will confirm the sizing against the datasheet curves 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 this series as curves, not as a single rated figure, so we do not quote a l/min or SCFM number here. Send us your application details and we will confirm the datasheet flow curves and sizing on request before you order.
The manual drain (code M) means condensate is emptied by opening the bowl drain during routine checks, instead of an automatic or differential-pressure drain doing it continuously. The 5 um element (code W) is one grade finer than the 40 um standard, giving cleaner air downstream at the cost of a finer element to look after.
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.