The AirTAC GFR400C15MLJC3WTK AirTAC Filter Regulator NPT1/2, 5 um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet 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 GFR400C15MLJC3WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built for a 1/2 in NPT port and carries the low-pressure regulator type, a 5 um filter element (code W), a manual drain and a metal bowl. A round gauge on the bar scale is fitted, a reverse/check valve is built in, and the unit comes without a mounting bracket. 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 GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across drain type, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT threads, brackets and a reverse valve. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and full datasheet figures for your application before ordering.
| Model | GFR400C15MLJC3WTK AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding low-pressure clamping and holding cylinders on a packaging or assembly machine, where the regulator holds the set pressure downstream and the built-in check valve keeps the clamp from venting if the supply drops.
Conditioning air for the divert and stopper cylinders on a conveyor sorting line: the 5 um element screens water and particles before they reach the valve islands and actuators.
Supplying filtered, regulated air to gauges and instruments on a laboratory or QC test rig, with the bar-scale round gauge giving a direct local pressure reading at the rig.
Size steps from 200 to 600 as flow demand rises; this unit sits at size 400 with a 1/2 in NPT port. Drain choice matters: a manual drain is emptied by hand, an automatic drain (code A) drains on its own, and the differential-pressure default drains when the pressure drop calls for it - this unit is manual. Filtration is 5 um here (code W) against the 40 um standard grade, for downstream equipment that needs finer air. This is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us for your circuit. The fitted round gauge reads in bar, and the reverse/check valve (code K) holds downstream pressure if the supply drops. Thread is NPT here; PT is the standard and G is also available to order. No mounting bracket is included.
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 GFR400 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and the full datasheet figures for this exact model on request.
The M in the code selects a manual drain, so the bowl is emptied by hand - automatic (A) and differential-pressure (blank) drain codes drain themselves if you prefer. The K code fits a reverse/check valve that holds downstream pressure if the upstream supply is lost. This unit is also the low-pressure regulator type, with a 5 um element, a round bar-scale gauge and no mounting bracket.
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.