The AirTAC GFR400C10ALF2WK AirTAC Filter Regulator 3/8 in PT 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 GFR400C10ALF2WK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit carries a 3/8 in PT port, a 5 um filter element (code W), an automatic drain, and the low-pressure regulator type. A square pressure gauge scaled in psi is fitted, a reverse/check valve is built in, and a mounting bracket is 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 GFR400 series is also catalogued with other port sizes, thread options (PT standard, with G and NPT available to order), manual or differential-pressure drains, a 40 um standard element, and gauge scales in MPa or bar. Because AirTAC publishes flow as curves rather than a single rated figure, ask us to confirm flow and other datasheet figures for your application before ordering.
| Model | GFR400C10ALF2WK AirTAC Filter Regulator 3/8 in PT |
|---|---|
| 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) |
Filtered, regulated air at reduced pressure holds workpieces in soft-jaw fixtures without crushing, while the 5 um element keeps spool valves on the clamp circuit free of particulate.
The packaging machine's jaw cylinders get clean air at a set low pressure, with the automatic drain clearing condensate before it carries downstream, and the check valve holding the setting if supply dips.
Positioners and pilot actuators on a water or chemical dosing skid need particulate-free air at a stable low pressure; this unit filters, regulates and blocks reverse flow on one 3/8 in line.
The real choices on this series: size and port (200/300/400/600, ports from 1/8 in to 1 in) stepped against the flow your line needs; drain type (automatic as fitted here, or manual, or differential-pressure); filter grade (5 um as fitted, or the 40 um standard); gauge scale (psi here, MPa or bar available); thread (PT is the standard, G and NPT are order options); and whether a bracket is wanted. Note that the exact adjustment range of the low-pressure type is not published, so confirm it with us when specifying. The honest routing: AirTAC publishes flow as curves, not a single rating, so send us your flow and pressure requirements 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 this series as curves rather than a single rated figure, so we do not quote a number. Send us your flow and pressure requirements and we will confirm sizing from the datasheet on request.
The standard GFR400 element is 40 um; the W code fits a 5 um element, which strips finer particulate before regulated air reaches downstream valves, cylinders and actuators. Both grades are catalogue options, and this unit is built with the 5 um element plus an automatic drain.
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.