The AirTAC GFR400C10AF2K 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 GFR400C10AF2K is a genuine AirTAC filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is ported PT3/8 (3/8 in, PT thread standard; G and NPT are order options). It carries a 40 um filter element, an automatic drain that ejects collected condensate without manual attention, and an embedded square gauge reading in psi. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), and a reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing. The polycarbonate bowl suits the 400 size, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, drain choices (differential-pressure, automatic or manual), a 5 um optional element (code W), gauge scale options and G/NPT thread variants. Flow is published as curves rather than a single rated figure, so ask us to confirm flow or any datasheet figure for your application before ordering.
| Model | GFR400C10AF2K 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) |
Conditioning and regulating the air supplied to a workshop pneumatic press: the 40 um element stops pipe-scale and condensate reaching the cylinder seals while the regulator holds a set clamping pressure.
Feeding gated diverters, pushers and clamp cylinders on a packaging conveyor, where the automatic drain keeps condensate out of the valves during multi-shift running without operator intervention.
A point-of-use filter regulator on a factory air drop serving air tools and small actuators at an assembly bench, with the psi gauge giving operators a visible set pressure and the check valve holding downstream settings.
Size 400 with a 3/8 in PT port suits lines where actuator and tool air demand sits above the 300 size step; step up or down by port size against the flow your circuit needs. The 40 um element is the standard grade for general plant air - choose the 5 um W option only where finer particulate protection is specified. The automatic drain on this unit suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives in the series. The fitted square gauge reads psi; MPa and bar scales and an external round gauge are available. PT is the standard thread, with G (BSPP) and NPT as order options, and the included bracket simplifies panel or wall mounting.
Because flow is published as curves rather than a single rated number, send us your application details and we will confirm sizing from 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, not as a single rated figure, so we do not quote one number. Tell us your application and required flow, and we will confirm the correct size from the datasheet on request before you order.
The A in the code specifies an automatic drain, which ejects collected condensate by itself - useful where the unit is mounted out of reach or on lines that run unattended. The series also offers manual drain (code M) and differential-pressure drain (blank) if you prefer operator-controlled or condition-based draining.
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.