The AirTAC GFR400-15LJC2WGK 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 GFR400-15LJC2WGK is a size-400 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for low-pressure service, carries a 5 um filter element (finer than the 40 um standard), a differential-pressure drain that bleeds condensate as pressure drop builds, a round external gauge scaled in psi, and a reverse/check valve fitted. The port is G1/2 with G (BSPP) thread, and the unit ships without a mounting bracket.
This is a genuine AirTAC part from the GFR400 series. The G-series filter regulator line spans sizes 200, 300, 400 and 600, with drain, filter grade, gauge, thread and bracket options to match the application. Flow is published as curves rather than a single rating, so contact us and we will confirm the figures from the datasheet for your operating conditions.
| Model | GFR400-15LJC2WGK 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 — 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. 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). |
| 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) |
Point-of-use filtration and low-pressure regulation on a lab compressed-air header, where the 5 um element polishes the air ahead of bench instruments and the psi gauge gives operators a direct local readout.
A finishing-line spray booth drop where fine particulate must be stripped before the regulator stage and the low-pressure type holds the gentle delivery pressure atomisation work needs.
Regulated air to hold-down and clamping cylinders on a packaging conveyor, with the fitted check valve helping hold the downstream setting if the plant supply dips and the psi gauge keeping the setpoint visible.
Size 400 with a G1/2 port sits in the upper half of the G-series range; step up or down through sizes 200/300/400/600 to match the flow your line needs. This unit is the low-pressure type, so choose it where the working circuit sits below the standard regulator band - the exact adjustment range for the low-pressure version is not published, and we will confirm it on request. The 5 um element (code W) suits finer air-quality needs than the 40 um standard; the differential-pressure drain is the default and automatic or manual drains are available elsewhere in the range. The round gauge here reads psi; square embedded gauges and MPa/bar scales are the other catalogue choices. Thread is G (BSPP) on this code, with PT standard and NPT orderable. Flow is published as curves, not a single rating - 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and the flow your application needs and we will confirm the sizing from the datasheet before you order.
The GFR range offers an embedded square gauge as standard and an external round gauge as an option, with MPa, psi or bar scales. The C2 code on this model selects the round gauge with the psi scale; if you prefer the square embedded gauge or an MPa/bar scale, those are available on other codes in the 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.