The AirTAC GFR400-15AC2WTK AirTAC Filter Regulator NPT1/2 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a automatic 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 GFR400-15AC2WTK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in NPT port, an automatic drain that discharges collected condensate on its own, a 5 um filter element, a round pressure gauge reading in psi, and a reverse (check) valve. The polycarbonate bowl lets you see the condensate level, and the mounting bracket is included.
This is a genuine AirTAC part. The G-series filter regulator line spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, plus drain, filter-grade, gauge, thread and check-valve options to match the application. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet before ordering.
| Model | GFR400-15AC2WTK AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Conditioning the air supply to a benchtop pneumatic press in a stamping cell: the 5 um element screens particulate and water before the valve and cylinder seals, while the regulator holds the working pressure the tooling was set up for.
Air prep for carton-sealer and case-erector cylinders along a packaging conveyor. The automatic drain clears collected condensate without a daily manual blowdown, and the 1/2 in port suits a line drop feeding several stations.
Point-of-use conditioning ahead of a pick-and-place robot's gripper valves, where the fitted check valve blocks reverse flow in the drop and the psi gauge gives technicians a local setpoint reference.
The main sizing choice is the size/port step: 400 with a 1/2 in port sits in the middle of the G-series range (200, 300, 400, 600), and the right step depends on the flow your line needs - we confirm curve figures from the datasheet on request. Drain type is a real decision: this unit carries code A for automatic drain, which suits points that are not blown down daily; manual and differential-pressure drains are available in the family. The W code selects the 5 um element over the 40 um standard - choose 5 um where downstream valves and cylinders need finer protection.
The gauge on this model is the round type reading in psi (MPa and bar scales are options). The T suffix orders NPT thread instead of the PT standard, and G/BSPP is also available. K fits a reverse/check valve, and a mounting bracket is included.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and required flow and we will confirm the sizing from the datasheet on request.
The W code fits a 5 um element instead of the 40 um standard, which suits lines with sensitive valves and cylinders. The A code fits an automatic drain, so collected condensate is discharged without manual blowdown; manual and differential-pressure drains are available in the family if your maintenance routine differs.
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.