The AirTAC GFR400C10ALC3WT 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 GFR400C10ALC3WT is an AirTAC GFR400 filter regulator: one body that removes water and particulate down to 5 um and then regulates downstream pressure. This configuration is built for low-pressure circuits, has NPT3/8 (3/8 in) ports, an automatic drain that expels collected condensate without manual attention, a metal bowl, a round pressure gauge reading in bar, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of 40 um standard or 5 um (W) filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure against your application before ordering.
| Model | GFR400C10ALC3WT 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) |
On a bottling line's capping head, the 5 um element keeps water and fines out of the clamp cylinder valves while the low-pressure regulator holds the gentle grip pressure the caps need; the automatic drain keeps the bowl clear through long shifts.
Feeding spray guns in a paint booth, the unit strips water and 5 um particulate that would otherwise fisheye the finish, and the low-pressure regulation suits atomization air circuits that run well below standard shop pressure.
On a packaging conveyor's pneumatic diverter and pusher actuators, the combination of fine filtration and steady low-pressure regulation keeps stroke timing consistent, with the round bar gauge giving operators a visible setpoint.
Step up or down through the GFR sizes (200/300/400/600) to match the port and flow path your line needs; this unit is size 400 with NPT3/8 ports. Choose the drain to suit attendance on site: automatic (as fitted here) for unattended condensate removal, manual for periodic draining, or differential-pressure as the default. Choose 40 um for general protection or 5 um (W, as here) where downstream valves and cylinders need finer air. Gauge options are the embedded square type or an external round gauge, with MPa, psi or bar scales; this unit carries a round gauge reading bar. Threads come as PT (standard), G (BSPP) or NPT (as here) - order the code that matches your piping. Brackets are optional on the family and included on this unit. Note this is the low-pressure type; its adjustment range is not published in the material we hold, so confirm the setpoint range with us. Flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering.
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, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow curve and sizing against your requirement before you order.
The W in the code selects the 5 um filter grade instead of the 40 um standard, for finer protection of downstream valves and cylinders, and the A selects the automatic drain, which expels condensate on its own instead of the default differential-pressure drain. Both are catalogue options on the GFR family; tell us which your circuit needs and we will confirm the right code.
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.