The AirTAC GFR40015AC2WGK AirTAC Filter Regulator G1/2 5 um Auto Drain 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 GFR40015AC2WGK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 5 um filter element (the finer W grade, versus the 40 um standard), an automatic drain that expels collected condensate without manual attention, a fitted round gauge reading in psi, and a reverse/check valve that holds downstream pressure if the supply drops. The port is G1/2 (1/2 in) with G (BSPP) thread; PT is the AirTAC standard and G or NPT are the order options this code selects. 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 from the GFR400 series. The GFR family spans sizes 200, 300, 400 and 600, with a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge scale options, and PT, G or NPT threads. Flow figures for the series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40015AC2WGK AirTAC Filter Regulator G1/2 5 um Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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. |
| G | G (BSPP) 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) |
Feeds clean, regulated air to the tool-change cylinders and clamping fixtures on a CNC machining centre, with 5 um filtration protecting the machine's pneumatic valves from water and fine particles.
Sits at the drop point of a packaging conveyor line, regulating the air that drives case-erector and sealing cylinders while the automatic drain keeps condensate out of the circuit between shifts.
Conditions the supply to laboratory analytical instruments and sample-handling pneumatics, where the 5 um grade and a stable setpoint protect sensitive dosing and valve components.
Size 400 with a 1/2 in port sits in the upper half of the GFR range; step up to 600 or down to 300 depending on the flow your line needs - we will check the published flow curves against your demand before you order. The 5 um element in this code suits air that feeds sensitive components such as valves, cylinders or instruments; choose the 40 um standard grade where coarser protection is enough. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives on this family. The round psi gauge is fitted here; embedded square gauges and MPa or bar scales are the other gauge choices. Thread is G (BSPP); PT is standard and NPT is orderable. A mounting bracket is included, and the fitted check valve prevents backflow through the unit. All regulation ranges and other figures can be confirmed from the datasheet on request.
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 rather than a single rated figure, so no one number is quoted here. Tell us your inlet pressure, setpoint and required consumption, and we will confirm the flow figures from the datasheet for your application on request.
Both are read from the code: A in the drain position selects the automatic drain, which expels collected condensate on its own instead of the differential-pressure default, and W selects the 5 um filter grade instead of the 40 um standard. The code also fits a round psi gauge and a reverse/check valve, and includes the mounting bracket.
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.