The AirTAC GFR400-10F1T AirTAC Filter Regulator NPT3/8 with Gauge 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 PT3/8" 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 GFR400-10F1T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is fitted with 3/8 in NPT ports, the standard 40 um filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. The set pressure is adjusted across 0.15-0.9 MPa (20-130 psi) and read on the embedded square gauge, which is scaled in MPa. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size; a mounting bracket is included.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) with port options from 1/8 to 1 inch. Across the range you can order a 5 um element (code W), automatic or manual drain instead of the differential-pressure drain, a psi or bar gauge scale, an external round gauge, G (BSPP) or NPT threads in place of the PT standard, and a low-pressure regulator type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400-10F1T AirTAC Filter Regulator NPT3/8 with Gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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 — square, MPa 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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeds filtered, regulated air to the tool-change and clamping circuits of a CNC machining centre, with the 40 um element protecting directional valves from particulate and the regulator holding a steady set pressure at the machine.
Sits at the drop point feeding cylinders and grippers on a carton packaging line, removing condensate picked up in the distribution piping and keeping actuator speed consistent through the 0.15-0.9 MPa adjustment range.
Installed as a branch regulator in a plant air panel, dropping header pressure to the level one machine section needs, with the differential-pressure drain handling condensate and the MPa-scaled square gauge giving a local set-point readout.
Start with the port and size step: this unit is size 400 with 3/8 in NPT ports; step up or down (200/300/400/600) if your line runs larger or smaller piping, and size against required flow rather than port alone. Choose the drain: the differential-pressure drain on this unit is maintenance-light, the automatic drain (code A) empties continuously, and the manual drain (code M) is for supervised installations. The 40 um element fitted here is the standard grade; specify 5 um (code W) where finer particulate removal is needed downstream. The square gauge on this unit reads in MPa; psi and bar scales and an external round gauge are order options. Threads are NPT on this unit; G (BSPP) is available, with PT as the catalogue standard. A mounting bracket is included; on GF/GR/GL/GFR units the J code deletes it.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the datasheet curve and sizing 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 performance curves rather than a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the datasheet curve for the GFR400 at your operating conditions before you order.
This unit carries the default differential-pressure drain, which discharges collected condensate from the polycarbonate bowl when the pressure differential across the 40 um element rises sufficiently. If you prefer, the same GFR400-10 size can be ordered with an automatic drain (code A) or a manual drain (code M); note that the regulation range differs by drain type: 0.15-0.9 MPa (20-130 psi) for the automatic and differential-pressure drains, and 0.05-0.9 MPa (7-130 psi) for the manual 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.