The AirTAC GFR40015LF2WGK 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 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 GFR40015LF2WGK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 unit is configured with a G1/2 (BSPP) port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a low-pressure regulator type for applications that work below standard supply ranges. It ships as coded with an embedded square gauge reading in psi and a reverse/check valve fitted to hold downstream pressure when the upstream supply drops. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, gauge scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR40015LF2WGK AirTAC Filter Regulator G1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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) |
Workholding fixtures and clamps that run at reduced supply pressure get both clean, dried air and a stable regulated setting from one body, with the check valve holding the clamp position if the main supply dips mid-cycle.
On cartoning and wrapping lines with 1/2 inch air drops, this unit filters water and fines from the mill supply, regulates the cylinders and actuators at a fixed low-pressure setting, and auto-drains condensate during production.
A bench or cell fed from a 1/2 inch ring main uses this filter regulator as its single conditioning point - the 5 um element protects sensitive valves and cylinders, and the psi gauge gives operators a local reading of set pressure.
Start with the port step: size 400 with a 1/2 inch G-thread port suits lines where the 1/4 and 3/8 sizes of the same family are too small, but sizing against required flow matters most - flow is published as curves, not a single rating, so send us your demand and we will confirm the right size before ordering. Choose the drain next: this unit uses the differential-pressure drain (the default), while automatic and manual drains are orderable alternatives in the same series. The 5 um element here is the finer option; the 40 um standard element is the usual choice where only bulk water and coarse particles are the concern. The square gauge is fitted with a psi scale; MPa and bar scales and an external round gauge are the other gauge choices. Threads come as PT (standard), G or NPT to order, and a mounting bracket is included with this code.
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 GFR flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the datasheet curve and check the sizing of this 1/2 inch unit against your application before you order.
The W in the code specifies the 5 um element, the finer of the two published grades - it suits applications protecting precision valves, cylinders or instruments. The 40 um standard element is the default grade and is the usual choice where only bulk water and coarse particles need removing. Both are orderable in the same GFR400 series.
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.