The AirTAC GFR400C15AC3WTK AirTAC Filter Regulator NPT1/2 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 GFR400C15AC3WTK is a filter regulator in the GFR400 series: one body that removes water and particulate from compressed air and regulates downstream pressure. It is rated for a maximum inlet pressure of 1.0 MPa (145 psi), adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), and operates at -5 to 70 C in non-freezing conditions. This configuration is built for 1/2 in NPT ports, carries the finer 5 um filter element, drains condensate automatically from its metal bowl, and is fitted with a round pressure gauge reading in bar. A reverse/check valve is fitted, the regulator is the standard type, and a mounting bracket is included.
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 catalogue options for drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT to order) and bracket. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15AC3WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
On a machining centre's 1/2 in main air drop, this unit filters water and swarf-laden particles out of the shop supply and holds a steady regulated pressure to the tool-clamp and pallet-actuator circuits.
Ahead of the carton-forming, folding and sealing cylinders on a packaging conveyor line, the 5 um element protects directional valves from condensate and grit while the regulator keeps actuator pressure consistent through the shift.
At the wall drop feeding paint spray guns in a finishing booth, this filter regulator strips water and particulate that would ruin finish quality and holds the gun supply pressure steady for a uniform pattern.
Size 400 with 1/2 in NPT ports sits in the upper half of the GFR range; step to 200, 300 or 600 if your line needs a different port. Drain type is a real choice: automatic (as here) for points that run unattended, manual where an operator drains the bowl, differential-pressure as the catalogue default. This unit carries the 5 um element against the 40 um standard - choose 5 um where downstream valves and cylinders need finer air. The round gauge reads in bar; the embedded square gauge and MPa or psi scales are the alternatives. PT is the standard thread, with G (BSPP) and NPT as order options, and the bracket is included on this code. Flow is published as curves, not a single rating, so send us your flow requirement 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 GFR400 as curves rather than a single rated figure, so we do not quote one number. Send us your flow requirement and we will confirm the datasheet curve figures for this exact configuration on request before you order.
The automatic drain expels collected condensate from the bowl without anyone opening it, which suits installations that run unattended or in hard-to-reach spots. The catalogue also offers a manual drain for supervised points and a differential-pressure drain as the default; this code is specified with the automatic type.
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.