The AirTAC GFR400-10T AirTAC Filter Regulator, NPT 3/8 in, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400-10T is a filter regulator: water and particulate removal plus downstream pressure regulation combined in one body. This size 400 unit is configured with a 3/8 in NPT port, a 5 um filtration element for finer particle capture than the standard 40 um grade, and a manual drain, so condensate is released when an operator opens the bowl drain. The standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi), and a round external gauge scaled in psi is fitted so the set pressure can be read directly. The polycarbonate bowl carries a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions. 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 and thread options of PT (standard), G and NPT. Drain, filter grade, gauge style and scale are all orderable choices within the series. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR400-10T AirTAC Filter Regulator, NPT 3/8 in, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Filtered and regulated air feeding clamps, tool-changer cylinders and part-ejector actuators on a machining centre, with the 5 um element protecting downstream valves from fine particulate.
Point-of-use regulation for diverters, stoppers and pusher cylinders on a bottling or carton-packing conveyor, where the operator sets line pressure at the gauge and drains the bowl during changeover.
A filter regulator mounted at the air drop serving hand tools and fixture clamps at an assembly station, keeping supply pressure steady as multiple tools draw air through the shift.
Size the GFR series by stepping up through 200, 300, 400 and 600 as your required flow and port size grow; this unit sits at size 400 with a 3/8 in NPT port. Choose the drain to suit maintenance access: manual (this unit) needs periodic draining by hand, automatic drains on its own, and differential-pressure drains with the pressure drop. Choose the 5 um element (this unit) when finer filtration is needed; 40 um is the standard grade. Gauge style and scale are selectable - embedded square or external round, in MPa, psi or bar (this unit: round, psi). Thread is PT as standard with G and NPT as orderable options; a bracket is included unless the no-bracket code is specified. Flow for the series 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 the GFR series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your application details and we will confirm the flow data from the datasheet on request before you order.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released when an operator opens the drain. The GFR series also offers automatic drains and differential-pressure drains as orderable alternatives, so you can match the drain type to how often the installation is attended.
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.