The AirTAC GFR40015LF2WG 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 AirTAC GFR400 series combines water and particulate filtration with pressure regulation in a single body. This unit, GFR40015LF2WG, is built around a 1/2 in G-thread port, a 5 um filter element (the finer of the two published grades; 40 um is the standard option), a differential-pressure drain (the default drain type), and a low-pressure regulator fitted with an embedded square gauge scaled in psi. The polycarbonate bowl (size 600 is the only aluminium-bowl size in the family) lets you see the condensate level at a glance, a mounting bracket is included, and the maximum working pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR family spans four sizes - 200, 300, 400 and 600 - with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015LF2WG 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 | 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. 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. |
| (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 filtered, regulated low-pressure air to the gripper and gate cylinders on a bottling line, where a 5 um element helps keep moisture and debris out of the actuators and the square psi gauge gives operators a visible setpoint.
Conditioning the shop-air feed to a CNC cell's tool-changer and clamping circuits, with the low-pressure regulator holding a stable supply pressure and the differential-pressure drain clearing collected condensate during operation.
Supplying clean, regulated air to the diverter and stopper valves along a packaging conveyor, with the 1/2 in G-thread port matching the line's main drop and the included bracket simplifying panel or frame mounting.
Within GFR400, the 1/2 in port suits lines plumbed at that size; step up or down a size if your demand differs - we confirm the flow curves against your application. The 5 um element (code W) is the finer of the two published grades; choose it when downstream valves and cylinders need cleaner air than the 40 um standard. The differential-pressure drain is the default; automatic (A) and manual (M) drains are order options. The square gauge here reads in psi; MPa and bar scales are available, and an external round gauge can be ordered. Thread is G (BSPP); PT is the standard thread and NPT is also an order option. A mounting bracket is included. Operating temperature is -5 to 70 C, non-freezing. Flow is published as curves, not a single rating, so 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.
Flow for the GFR400 series is published as curves, not as a single rated number, so we do not quote a figure on the page. Send us your application details and we will confirm the datasheet curve and whether the GFR400 at 1/2 in is correctly sized before you order.
It marks the low-pressure regulator type. The standard GFR regulator has a published adjustment range, but the exact range for the low-pressure type is not published in the catalogue we work from, so we confirm it on request. If your line runs at conventional shop-air pressures, the standard type may be the better match - we can help you choose.
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.