The AirTAC GFR400C15AJNT AirTAC Filter Regulator NPT1/2 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 AirTAC GFR400C15AJNT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your set point in a single 400-size body. This configuration has a 1/2 in NPT port, an automatic drain that ejects collected condensate without manual attention, standard 40 um filtration, and no gauge or mounting bracket fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the pressure setting range is 0.15-0.9 MPa (20-130 psi), and the operating temperature is -5 to 70 C (non-freezing). The bowl on this 400 size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge options, and G (BSPP) or NPT threads as order variants. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and full datasheet figures for your application before ordering.
| Model | GFR400C15AJNT AirTAC Filter Regulator NPT1/2 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) |
Filtered, regulated air for the tool-change and clamping circuits on a machining centre, with the automatic drain handling condensate at an unattended drop.
Stable pressure to the cylinders and grippers on a carton-forming and sealing conveyor, keeping water and debris in the shop air away from valve seals.
Clean, regulated air to spray guns and air motors in a body-shop booth, where water carry-over in the supply line would ruin finish quality.
Step through sizes 200/300/400/600 to match the port and flow your line needs; this unit is the 400 size with a 1/2 in NPT port. Choose the drain: automatic (this code) for unattended condensate removal, manual where you drain on a schedule, or differential-pressure as the catalogue default. Filtration is 40 um standard; specify W for 5 um when downstream equipment needs finer air. Gauge options (embedded square or external round, in MPa, psi or bar scales), a mounting bracket, and PT/G/NPT thread variants are all decodable choices - this code carries no gauge and no bracket. Because flow is published as curves rather than one rated number, send us your application and we will confirm 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 curves, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and the full datasheet figures for this 400-size, 1/2 in NPT unit on request.
The A in the code sets the automatic drain, which ejects collected condensate from the bowl without manual attention. The same GFR400 size is also orderable with a manual drain or the differential-pressure default, and with 5 um (W) filtration, gauge options, and G (BSPP) or NPT threads - tell us which variant you need and we will confirm it against the catalogue.
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.