The AirTAC GFR400C10AF1T AirTAC Filter Regulator NPT 3/8 in 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 GFR400C10AF1T 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 a 3/8 in NPT port, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, and a built-in square pressure gauge scaled in MPa. The standard regulator covers 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions. The polycarbonate bowl suits the size-400 frame, and the mounting bracket is included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the family you can order manual or differential-pressure drains, a 5 um element (code W), psi or bar gauge scales, G or NPT threads in place of the PT standard, and no-gauge or check-valve variants. Flow figures for this series are published as curves rather than a single rating, so we confirm the datasheet and sizing on request.
| Model | GFR400C10AF1T AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
Clean, regulated air feeding tool-clamp and chip-clearance cylinders on a machining centre, with the automatic drain handling condensate between shifts.
Conditioned air for carton-forming and case-sealing cylinders on a packaging conveyor, where the 40 um element protects directional valves from water and debris.
Point-of-use air preparation at bench assembly stations, with the built-in MPa gauge letting operators set and verify working pressure at the station.
Start with port size: the GFR400 carries a 3/8 in port, one step up from the GFR300 (1/4 in) and one below the GFR600, so pick the size whose flow curve covers your demand rather than upsizing blindly. Drain type is a real choice here: automatic drain (this unit) suits unattended or hard-to-reach installations, manual drain suits supervised points, and differential-pressure drain is the catalogue default. Filter grade is 40 um as standard; choose the 5 um W element when downstream valves or cylinders need finer protection. Gauge scale can be MPa (this unit), psi or bar, and the embedded square gauge can be swapped for an external round gauge. Thread is NPT on this model; PT is the series standard and G (BSPP) is an order option. A bracket is included here; J variants omit it.
Because AirTAC publishes flow for this series as curves and not as a single rated figure, we do not quote a flow number. Ask us to confirm the datasheet and check the curve 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 state a flow figure here. Contact us and we will confirm the datasheet and check the GFR400 curve against your air demand before you order.
The A in the code specifies an automatic drain, which ejects collected condensate from the bowl without operator attention. The family also offers manual drain and the differential-pressure default, so pick automatic for unattended or infrequently visited installations and manual where drains are checked on a routine round.
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.