The AirTAC GFR400C10ALF2WTK 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 GFR400C10ALF2WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is a size 400 unit with a 3/8 in NPT thread, a 5 um filter element (code W), an automatic drain, and the low-pressure regulator type. It has the embedded square gauge set to a psi scale, a reverse/check valve (code K) fitted, a mounting bracket included, and a metal bowl. 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 is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade (40 um standard, 5 um optional), gauge scale (MPa, psi or bar), thread (PT standard; G and NPT as order options) and bracket. AirTAC publishes flow as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR400C10ALF2WTK 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) |
Filtered, regulated air for gripper and pusher cylinders on a bottling line: the 5 um element protects valve and cylinder seals, the automatic drain keeps condensate out of the circuit, and the low-pressure regulator type suits circuits run at modest set pressures.
Point-of-use air conditioning for diverter gates and product stops on a distribution conveyor, where the low-pressure regulator holds a controlled set pressure, the psi gauge gives a direct reading, and the check valve helps hold the circuit if supply dips.
Bench-side air preparation for a pneumatic test rig or lab automation cell: 5 um filtration for sensitive instruments, low-pressure regulation, a psi gauge for direct reading, and an automatic drain so the unit runs unattended.
Choose the size by port and air demand: size 400 with its 3/8 in port sits mid-range in the GFR line, which steps from size 200 (1/8-1/4 in) up to size 600 (1 in). Pick the drain: automatic (this unit), manual, or the differential-pressure default. Pick the element: 40 um standard or 5 um (code W) for finer protection downstream. Gauge scale is selectable (MPa, psi or bar); this unit has the square gauge in psi. Thread is PT as standard with G and NPT as order options - this unit is NPT. Because AirTAC publishes flow as curves, not a single rating, 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 the GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your working pressure and air demand and we will confirm the flow from the datasheet for this exact model before you order.
The automatic drain (code A) ejects collected condensate without anyone opening the bowl, which suits unmanned or hard-to-reach installations. Manual and differential-pressure drain versions of the same GFR400 size are also available - tell us which you prefer when ordering.
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.