The AirTAC GFR400C10AJC3T AirTAC Filter Regulator NPT3/8 Auto Drain 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 GFR400C10AJC3T is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and holds downstream pressure steady. This unit is built for 3/8 in NPT ports, carries an automatic drain that ejects collected condensate without manual attention, and filters to the standard 40 um grade. A round pressure gauge scaled in bar is fitted, and the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi), with a working temperature range of -5 to 70 C (non-freezing) and a polycarbonate bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options including manual or differential-pressure drains, a 5 um filter element (code W), square or round gauges scaled in MPa, psi or bar, and G (BSPP) or NPT threads. Flow is published as curves rather than a single rated figure, so we confirm datasheet figures on request.
| Model | GFR400C10AJC3T AirTAC Filter Regulator NPT3/8 Auto Drain |
|---|---|
| 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) |
Feeding clean, regulated air to the tool-changer and clamping circuits of a CNC machining centre, where a steady 3/8 in supply line protects solenoid valves from water and debris.
Regulating pressure to pneumatic cylinders on a carton-sealing and wrapping line, with the automatic drain keeping condensate out of the valves during multi-shift running.
Supplying filtered, pressure-controlled air to spray guns and air-driven agitators in a paint finishing booth, where the 40 um element guards against water spotting and particles.
Choose the size by port step: 400 sits at 3/8 in, one step above the 300 series at 1/4 in and below the 600 series at 1/2 to 1 in - match the step to the air demand of the line. This unit's automatic drain suits unmanned or hard-to-reach installations; manual and differential-pressure drains are available elsewhere in the family. The standard 40 um element covers general protection; specify code W for 5 um when downstream equipment needs finer filtration. Gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order) and bracket choice are all decodable from the code. Because flow is published as curves rather than a single rating, 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 GFR400 as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the flow and sizing from the datasheet on request.
Code A in this model fits an automatic drain, which ejects collected condensate on its own - useful for unmanned or hard-to-reach spots. The GFR family also offers manual and differential-pressure drains, selectable by code.
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.