The AirTAC GFR40015LJF2WG 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 GFR40015LJF2WG is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the size 400 unit with a G1/2 (BSPP) port, a 5 um filter element (code W, finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically when flow differential allows, and the low-pressure regulator type for applications regulated well below standard line pressure. It ships with the embedded square gauge scaled in psi, without a mounting bracket, and without a reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 400 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, square or round gauges scaled in MPa, psi or bar, an optional reverse/check valve, and PT (standard), G or NPT threads. Flow is published as curves rather than a single rated figure, so contact us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR40015LJF2WG 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. |
| J | Supplied without bracket. |
| (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 air to the cylinder and gripper circuits of a cartoning or wrapping line, where the 5 um element protects directional valves from particulate and the low-pressure regulator holds a gentle setpoint for delicate product handling.
Supplying the clamp cylinders on a light-duty pneumatic press station, with the differential-pressure drain keeping condensate out of the valve stack during shift-long cycling and the psi gauge giving the operator a direct local readout.
Conditioning air on a manifold serving low-pressure actuated process valves or air-sparing lines, where the low-pressure regulator type is the right match for setpoints below what a standard regulator is intended for and the G1/2 port suits the header size.
Start with the port and size: the 400 size steps up to G1/2, so match it to your line size and the flow your circuit needs - if your demand sits near the top of a smaller unit's curve, moving to 400 keeps pressure drop down. This unit carries the 5 um element (code W); choose it when downstream valves, cylinders or instruments need finer particulate control than the 40 um standard, accepting a slightly earlier element service interval. The differential-pressure drain is hands-off under normal duty; specify automatic drain (code A) for unattended condensate removal or manual drain (code M) where you want positive control. The low-pressure regulator type (code L) is intended for regulated pressures below the standard type's range - its exact adjustment range is not published, so confirm it with us against your setpoint. The square gauge here is scaled in psi; MPa and bar scales and an external round gauge are alternatives. Thread is G (BSPP) on this code; PT is the catalogue standard and NPT is an order option. Brackets and a reverse/check valve are optional.
Because AirTAC publishes flow as curves rather than a single rating, ask us to confirm the flow curve and datasheet figures 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 GFR400 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Send us your line pressure, regulated setpoint and expected air demand, and we will confirm the flow curve and datasheet figures for this exact configuration on request.
The L in the code marks the low-pressure regulator type, intended for applications regulated below the range of the standard type. Its exact adjustment range is not published in the material we hold, so confirm your setpoint with us before ordering. Everything else about the unit - the G1/2 port, 5 um element, differential-pressure drain, psi square gauge and PC bowl - is unchanged from the standard configuration.
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.