The AirTAC GFR40015AF3WT 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 GFR40015AF3WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body, with a 1/2 in NPT port. It removes water and particulate from compressed air through a 5 um filter element (the finer of the two catalogue grades, in place of the 40 um standard) and regulates downstream pressure across the standard range of 0.15-0.9 MPa (20-130 psi). This configuration carries an automatic drain, so condensate collected in the PC bowl is expelled without manual attention, and a fitted embedded square gauge scaled in bar for direct set-point reading. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR line is published in four sizes (200/300/400/600) with port options from 1/8 in to 1 in, a choice of automatic, manual or differential-pressure drain, 40 um or 5 um filtration, square or external round gauges, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for this model on request.
| Model | GFR40015AF3WT 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 — 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". |
| 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). |
| 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) |
Feeding clean, regulated air to the tool-change and clamping circuits of a CNC machining centre, where the 5 um element protects directional valves from particulate and the automatic drain keeps condensate off the bowl schedule.
Regulating the supply to pneumatic cylinders and grippers on a carton packaging line, with the bar-scaled square gauge letting maintenance set line pressure at the machine and the automatic drain handling moisture through a shift.
Conditioning the air drop ahead of spray booths and air-assisted applicators, where the 5 um grade limits particulate carryover and stable regulation keeps atomising pressure consistent across the booth.
Size 400 with a 1/2 in port sits in the upper half of the GFR range; step up to size 600 or down to 300/200 depending on the flow your line needs - we confirm sizing against the published flow curves on request. The 5 um element (code W) suits applications more sensitive to particulate than the 40 um standard; note that finer filtration is a trade-off you should match to the application. The automatic drain is the right choice where the unit is mounted away from easy reach or on lines with steady condensate loading; manual or differential-pressure drains are available in the same series. The square gauge is fitted here scaled in bar; psi and MPa scales, or an external round gauge, are the other catalogue options. NPT thread is the order option on this code - PT is the catalogue standard and G (BSPP) is also available. A mounting bracket is included.
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 rather than a single rated figure, so we do not quote one number. Send us your application details and we will confirm the flow and datasheet figures for this model on request before you order.
The A in the code sets the automatic drain: condensate in the PC bowl is expelled without anyone opening it, which suits units mounted out of easy reach. The same GFR400 series is also available with a manual drain or the differential-pressure default, and the filter element can be the 40 um standard instead of the 5 um fitted here.
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.