The AirTAC GFR400C15AJC3WT AirTAC Filter Regulator NPT 1/2 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body. This GFR400C15AJC3WT is built for a 1/2 in NPT port, drains collected condensate automatically, carries a 5 um filter element, and is fitted with a round pressure gauge reading in bar. With the automatic drain fitted, the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), the maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing. The bowl on this size 400 unit is polycarbonate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT, G and NPT thread options, differential-pressure, automatic or manual drains, 40 um standard or 5 um elements, gauge and scale choices, and optional mounting brackets. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before you order.
| Model | GFR400C15AJC3WT AirTAC Filter Regulator NPT 1/2 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) |
Feeding spray guns and air-assisted applicators on a paint line, where the 5 um element helps keep water and fine particulate out of the finish and the regulator holds a steady set pressure at each drop.
Supplying clamps and pallet-locking cylinders on a machining centre, where the operator sets a fixed clamping pressure once and the automatic drain keeps condensate out of the valve stack.
Regulating air to diverters, pushers and stopper cylinders on a carton conveyor line, with the bar-scale gauge giving the line technician a visible setpoint at the panel.
This code fixes the real choices for you: size 400 with a 1/2 in NPT port, automatic drain, 5 um filter element, round gauge with bar scale, standard regulator, no reverse/check valve, and no mounting bracket (J code). If your installation would suit manual draining, a 40 um element, an embedded square gauge, an MPa or psi scale, a bracket, or a PT or G (BSPP) thread, those are the neighbouring catalogue options to order instead. Flow is published as curves, not a single rating, so send us your air demand and we will confirm this size 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 this series as curves rather than a single rated figure, so we do not quote a number on the page. Tell us your line pressure and air demand and we will confirm the flow curve from the datasheet for this exact unit before you order.
A is the drain code: this unit drains condensate automatically instead of relying on a manual or differential-pressure drain. W is the filter grade: a 5 um element instead of the 40 um standard. The C3 in the code is the round gauge with bar scale, and T is the NPT thread.
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.