The AirTAC GFR40015MLF2WGK AirTAC Filter Regulator G1/2, 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR40015MLF2WGK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size-400 unit carries G1/2 ports, the 5 um filter element (code W) for finer filtration than the standard 40 um grade, a manual drain for the polycarbonate bowl, the low-pressure regulator type, an embedded square gauge with psi scale, and a reverse/check valve fitted. 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 GFR400 series is one of four sizes (200/300/400/600) with port options from 1/8 to 1 inch, a choice of drain types, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. Flow figures 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 | GFR40015MLF2WGK AirTAC Filter Regulator G1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure 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. |
| 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 filtered, pressure-controlled air to a spray booth or paint circulation line where the coating equipment runs at reduced pressure and finer 5 um filtration helps protect the finish from water and particulate carryover.
Serves as the treatment point on a carton-sealer or wrapping line: water and 5 um particulate are stripped out before the air reaches cylinders and actuators, and the manual drain is emptied during scheduled changeovers.
Conditions the supply to a test rig or laboratory bench that needs clean, finely filtered air held at a low controlled pressure, with the psi gauge giving operators a direct local readout of the set pressure.
Size 400 with G1/2 ports suits lines whose pipework and air demand sit at the larger end of the GFR range; step up or down a size if your flow requirement changes. This unit is the low-pressure regulator type, so choose it where the controlled pressure must sit below what a standard regulator covers - the exact range for this variant is not published, so confirm it with us before ordering. The 5 um element (W) is the right pick when downstream valves or instruments need finer filtration than the 40 um standard; the manual drain means an operator drains the bowl rather than relying on automatic or differential-pressure action. The square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread here is G (BSPP); PT is standard and NPT is an order option. Flow is published as curves, not a single rating - ask us to confirm sizing against your application before you order.
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 we do not quote a number. Tell us your application and required flow, and we will confirm the datasheet curve figures on request before you order.
The M in the code specifies a manual drain: an operator opens the bowl drain instead of relying on automatic or differential-pressure action, which suits lines drained on a fixed schedule. The L specifies the low-pressure regulator type, for circuits whose controlled pressure sits below the standard regulator's coverage. The exact range for the low-pressure variant is not published, so confirm it with us on request.
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.