The AirTAC GFR400C15MLJC3TK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR400C15MLJC3TK is an AirTAC GFR400 filter regulator: one body that first removes water and particulate from compressed air through a 40 um element, then regulates the downstream pressure. This configuration is the low-pressure type, intended for circuits that run below standard line pressure, with a 1/2 in NPT port, a manual drain under the polycarbonate bowl, a round external gauge reading in bar, and a built-in reverse/check valve. No mounting bracket is fitted, so plan the pipework support accordingly.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200, 300, 400, 600) offered with ports from 1/8 to 1 in and PT, G or NPT threads. Drain type, filter grade, gauge style and scale, bracket and check-valve options let you match the unit to the circuit. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C15MLJC3TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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) |
Feeds atomizing air to paint guns and coating headers on a finishing line that runs at reduced pressure, with the 40 um element helping keep paint valves and lines free of water and debris.
Supplies regulated low-pressure air to fixture and clamping circuits on machining cells, with the fitted reverse/check valve in place for circuits that must be protected against upstream reversal.
Regulates air to cylinders and actuators on packaging and conveying equipment that runs below standard pressure, with the manual drain allowing the bowl to be emptied during scheduled shift checks.
Size the unit against the air your circuit actually uses: this model is size 400 with a 1/2 in NPT port, the larger step in the GFR range for higher-consumption lines. Pick the drain to suit maintenance practice - manual (as here) means an operator drains the bowl at intervals, while automatic and differential-pressure drains discharge condensate without hands-on attention. The 40 um element is standard; specify code W for a 5 um element where downstream equipment needs finer filtration. The fitted round gauge reads in bar; an embedded square gauge and MPa or psi scales are the alternatives. Thread is NPT on this code; PT is the standard and G (BSPP) is also an order option. No bracket is fitted on this code. Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing from the datasheet before you order.
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, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and other datasheet figures for this exact model on request.
The M in the code GFR400C15MLJC3TK means the bowl is drained by hand - an operator opens the drain at maintenance intervals. AirTAC also offers automatic and differential-pressure drains on GFR units, so a different drain type can be ordered if the installation cannot be drained manually.
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.