The AirTAC GFR400C10ALF2W AirTAC Filter Regulator, PT3/8, 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 AirTAC GFR series is a filter regulator: it removes water and particulate from compressed air and holds a set downstream pressure, in a single body. This unit, GFR400C10ALF2W, is the size 400 frame with a PT3/8 (3/8 in) port. It is built with the 5 um filter element (code W) instead of the 40 um standard, an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type for circuits set below standard ranges. An embedded square gauge with a psi scale is fitted, a mounting bracket is included, and no reverse (check) valve is fitted. The bowl on this configuration is metal, maximum working (inlet) pressure is 1.0 MPa (145 psi), and the non-freezing temperature range is -5 to 70 C.
This is a genuine AirTAC part. The GFR400 size sits in the GFR range that spans sizes 200, 300, 400 and 600, with ports from 1/8 in to 1 in, a choice of PT, G (BSPP) or NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and gauge or no-gauge variants. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and other datasheet figures for your application before ordering.
| Model | GFR400C10ALF2W AirTAC Filter Regulator, PT3/8, 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 spray guns on a refinish booth line: the 5 um element keeps water and fine particulate out of the air path, while the low-pressure regulator holds a gentle, steady setting at the gun.
Supplying sealing jaws and gripper cylinders on a packaging conveyor: filtration and regulation in one body, with the automatic drain handling condensate on a line that runs unattended.
Regulating air to pneumatic clamps and tool-change actuators on a machining cell, with the square psi gauge giving the operator a direct read of the set pressure at the machine.
Choose the size by the port and flow step: sizes 200, 300, 400 and 600 map to increasing ports from 1/8 in to 1 in, so size 400 at PT3/8 suits lines that need more air than a 300 at 1/4 in. This unit already carries the 5 um element (W) - pick 40 um for general shop air and 5 um where downstream equipment needs finer filtration. Drain choice matters: automatic (fitted here) suits unattended installations, manual suits periodic checks, and differential-pressure is the default. The low-pressure (L) regulator type is for circuits set below standard ranges - confirm the setting range with us. Gauges can be square (embedded) or round (external) with MPa, psi or bar scales; this unit has the square psi gauge. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against your 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 this series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow from the datasheet before you order.
This unit carries the L code, so its regulator is the low-pressure type for circuits set below standard ranges. The exact setting range is not published in our material, so please confirm it with us on request. Maximum inlet pressure is 1.0 MPa (145 psi) and the temperature range is -5 to 70 C, non-freezing.
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.