The AirTAC GFR400C10AF3T AirTAC Filter Regulator NPT3/8 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 GFR400C10AF3T is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has NPT3/8 ports, a 40 um standard filter element, an automatic drain that ejects collected condensate without manual attention, a fitted square pressure gauge reading in bar, a standard (non low-pressure) regulator, and a mounting bracket included. The 3/8 in NPT thread suits US-standard pneumatic piping, and the polycarbonate bowl lets you see the condensate level at a glance.
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 options including 5 um filtration (code W), manual or differential-pressure drains, alternative gauge scales, and G (BSPP) or NPT threads in place of the PT standard. Rated flow for this series is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C10AF3T AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Point-of-use conditioning ahead of the tool-change clamp and spindle-air-seal circuit on a CNC machining center: the 40 um element keeps chips of scale and pipe rust out of the valves while the regulator holds a steady setting for the clamping sequence.
Feeding the pusher and diverter cylinders on a bottling or canning conveyor line, where the automatic drain clears condensate that collects overnight so the first shift starts with a dry bowl, and the bar gauge gives operators a visible set point.
A filtered, regulated drop at a small pneumatic press or stamping bench, supplying clean air at a fixed pressure to the press cylinder and its control valves, with the included bracket mounting the unit at the operator's eye level.
Choose the size step by the flow your line needs: size 400 with its 3/8 in port sits in the middle of the GFR range (200/300/400/600), and larger sizes carry larger ports and more flow. Decide the drain first: the automatic drain fitted here suits unattended duty, while manual and differential-pressure drains are order options. The 40 um element fitted here is the standard grade; specify code W for the 5 um fine grade if downstream valves or instruments need it. The square gauge here reads in bar; MPa and psi scales are available, and an external round gauge is an option. NPT thread is fitted as ordered; G (BSPP) and PT are the other catalogue thread options, and a bracket is included.
Because rated flow is published only as curves and not as a single number, send us your application details and we will confirm the 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 the GFR series as performance curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and the flow your application needs, and we will confirm the sizing against the datasheet on request before you order.
The A in the code GFR400C10AF3T means an automatic drain: condensate collected in the polycarbonate bowl is ejected without anyone opening it, which suits unattended or hard-to-reach mounting. Manual (M) and differential-pressure (blank) drains are catalogue alternatives you can order instead if you prefer a different drain style.
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.