The AirTAC GFR40015AC3WT 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 AirTAC GFR40015AC3WT is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is fitted with a 1/2 in NPT port, a 5 um filter element (the finer W grade, versus the 40 um standard), an automatic drain that expels collected condensate without operator attention, and a round pressure gauge reading in bar. The bowl on this size is polycarbonate (PC), the regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G and NPT thread options. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). AirTAC publishes flow for this series as curves rather than a single rated figure; ask us and we will confirm the datasheet and flow figures for your application on request.
| Model | GFR40015AC3WT 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, 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). |
| C | Gauge shape: Round. 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) |
Conditioning and regulating the shop-air feed to a CNC machine's pneumatic valves, tool-change cylinders and clamps, with the 5 um element protecting fine directional-control valves from particulate and the automatic drain handling condensate through long unmanned shifts.
Feeding the pick-and-place cylinders and diverters on a food or consumer-goods packaging conveyor, where the regulator holds a steady set pressure for consistent cycle timing and the automatic drain keeps moisture out of the actuators without daily walk-round draining.
Supplying filtered, regulated air to diaphragm-actuated control valves on a water-treatment or chemical dosing skid, where the bar-scale round gauge lets technicians verify the setpoint against the process drawing and the 5 um grade suits sensitive positioner hardware.
Step up or down through the GFR sizes (200/300/400/600) to match the port and flow path your line needs; this unit is the size 400 with a 1/2 in NPT port. Choose the drain that suits access: automatic (this model, code A) for unattended duty, manual (M) where an operator drains on schedule, or the differential-pressure default. Choose the filter grade: 40 um standard or 5 um with the W code (this model). Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - here it is the round gauge in bar. Thread is PT as standard, with G (BSPP) and NPT (this model) as order options, and a bracket is included unless the J (no bracket) code is specified. Flow for the series is published as curves, not a single rating, so please ask us to confirm sizing against your application before ordering.
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 performance curves rather than a single rated figure, so we do not quote a Cv, l/min or SCFM number. Tell us your application and we will confirm the datasheet and flow-curve figures for this exact model on request before you order.
The W code in GFR40015AC3WT selects the finer 5 um filter element instead of the 40 um standard, and the A code selects the automatic drain instead of the manual (M) or differential-pressure default - useful where the unit is mounted out of easy reach. The same size 400 body is available with the 40 um grade and either drain type, and with square or round gauges in MPa, psi or bar scales; ask us for the code you need.
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.