The AirTAC GFR400C10C3WT 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 GFR400C10C3WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body, so one unit removes water and particulate from the compressed air and holds a steady downstream pressure. This configuration is built around a 3/8 in NPT port in the size-400 frame, with the finer 5 um filtering element (the W grade option), a differential-pressure drain that clears collected condensate as the pressure differential across the element rises, a round pressure gauge reading in bar, a standard regulator and the mounting bracket included. The bowl on this size is polycarbonate (PC), giving a clear view of the condensate level and drain function.
This is a genuine AirTAC part. The GFR series is offered in sizes 200, 300, 400 and 600 with a choice of ports, drain types, 40 um or 5 um elements, gauge styles and scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet and the sizing for your application on request.
| Model | GFR400C10C3WT 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) |
Point-of-use air preparation for a CNC machining centre: clean, moisture-reduced air at a set pressure for the tool-clamp, chip-blow-off and fixture-clamping circuits fed from a 3/8 in branch.
Filtered, regulated air for carton-sealing and case-packing machines, where cylinders and vacuum generators need steady pressure to keep seal and pick-and-place cycles repeatable.
Branch-line regulation for assembly-plant air drops serving air screwdrivers, impact wrenches and pneumatic presses, with the 5 um element protecting the tools from water and particulate carried downstream.
Size and port are the first decision: 200, 300, 400 and 600 step up in port and flow capacity, and this unit sits at size 400 with a 3/8 in NPT port - match the step to the air demand of the circuit. Where a regulator is fitted, the drain choice sets the adjustment range: with the differential-pressure drain fitted here the range is 0.15-0.9 MPa (20-130 psi), while a manual-drain version widens it to 0.05-0.9 MPa (7-130 psi). The element here is the 5 um W grade; the standard grade is 40 um if finer filtration is not required. This unit carries a round gauge reading in bar; the embedded square gauge and MPa or psi scales are the other catalogue options. PT is the standard thread and G or NPT are ordered as options - this code specifies NPT. A bracket is included. Flow is published as curves, not a single rating, so send us your air demand 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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Tell us your air demand and operating pressure and we will confirm the sizing and provide the full datasheet on request.
The W selects the optional 5 um filtering element instead of the 40 um standard, and C3 selects the round gauge with a bar scale; the embedded square gauge and MPa or psi scales are the other options. The T at the end specifies the NPT thread on the 3/8 in ports, where PT is the standard and G is the other catalogue choice.
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.