The AirTAC GFR400-15T AirTAC Filter Regulator NPT1/2, 5 um, Bar Gauge 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 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 GFR400-15T is an AirTAC GFR filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size 400 unit carries a 1/2 in NPT port, a 5 um filter element (the fine W grade, one step finer than the 40 um standard), a differential-pressure drain that bleeds condensate automatically as flow passes through, and an embedded square gauge reading in bar. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) setting range, the polycarbonate bowl suits the 400 size, a mounting bracket is included, and the unit is rated to 1.0 MPa (145 psi) inlet and -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and this configuration can be ordered with automatic or manual drain, the 40 um standard element, gauge scales in MPa, psi or bar, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR400-15T AirTAC Filter Regulator NPT1/2, 5 um, Bar Gauge |
|---|---|
| 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, bar 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, regulated air to a machining centre's tool-change and clamping circuits, with the 5 um element guarding fine pneumatic valves and the bar gauge giving operators a local setpoint readout.
Sits at the drop point feeding a packaging conveyor's diverters and seal cylinders, holding a steady regulated pressure so pick-and-place strokes stay repeatable through the shift.
Prepares air for laboratory automation frames and pneumatic test benches, where the fine 5 um grade and a stable regulated supply protect sensitive instrumentation and pilot valves.
Step up or down through the GFR sizes (200/300/400/600) to match the port and flow band your line needs; this unit sits at size 400 with a 1/2 in NPT port. Choose the drain to suit maintenance: differential-pressure (this unit, no operator action), automatic for continuous condensate removal, or manual where you want controlled draining. Pick the element grade: 40 um standard for general protection, 5 um (code W, fitted here) for finer downstream air. Gauge scale is selectable (MPa, psi or bar - bar here), and thread is PT as standard with G and NPT as order options; a no-bracket J variant exists if you will not use the included bracket.
One honest note before you order: AirTAC publishes filter-regulator flow as curves, not a single rated number, so we do not quote a flow figure here. Send us your application and we will confirm sizing against the datasheet on request.
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 filter-regulator flow as curves rather than a single rated figure, so we do not state a flow number for this unit. Tell us your application and required flow, and we will confirm sizing against the datasheet on request.
The trailing W in the code selects the optional 5 um filter grade, one step finer than the 40 um standard, for finer protection of downstream valves and actuators. If your line only needs general protection, the 40 um standard grade is available in the same family.
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.