The AirTAC GFR400C15LJC3TK 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 GFR400C15LJC3TK is an AirTAC GFR-series filter regulator: it removes condensed water and particulate from compressed air and reduces pressure to the level your circuit needs, in one body. This size 400 configuration carries a 1/2 in NPT port, the standard 40 um filter element and a differential-pressure drain. Its regulator is the low-pressure type (code L), a round pressure gauge with a bar scale is fitted, and a reverse (check) valve (code K) is built in. The unit is supplied without a mounting bracket (code J).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, plus a choice of drain type, filter grade (40 um standard, 5 um with code W), gauge style and scale, and bracket. The bowl on size 400 units is polycarbonate (PC). Maximum inlet pressure is 1.0 MPa (145 psi) and working temperature is -5 to 70 C, non-freezing. The exact setting range of the low-pressure type is not published in the catalogue, so we confirm it, along with flow curves and full datasheet figures, on request.
| Model | GFR400C15LJC3TK 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 filtered, reduced-pressure air to the clamping cylinders on a pneumatic press fixture. The fitted reverse (check) valve helps hold the set downstream circuit against backflow, and the round bar gauge lets setters verify the clamping pressure at a glance.
Point-of-use air preparation for gripper and actuator supply on a robotic assembly cell. The 40 um element strips condensed water and particles before they reach directional control valves, while the regulator holds the working pressure the cell was commissioned at.
Regulates and cleans the supply to stopper cylinders and diverters on a packaging conveyor line. The differential-pressure drain bleeds collected condensate during normal operation, and the bar-scale gauge gives line technicians a visible pressure reference during changeover.
Start from the flow your circuit needs and step up or down the size ladder: this unit is size 400 with a 1/2 in NPT port, one step above the 300 series and below the 600 series. Because AirTAC publishes flow only as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Choose the drain to match maintenance: differential-pressure (the default on this unit), automatic (A) for unattended operation, or manual (M). Filtration is 40 um as standard; specify code W if you need the 5 um element. The fitted round gauge reads in bar; embedded square gauges and MPa, psi or bar scales are the other gauge choices. Thread is NPT here; PT is the standard and G (BSPP) is an order option. This unit comes without a bracket; a bracket is available as an option.
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 this series as curves, not as a single rated figure, so we do not quote a number on the product page. Send us your required flow, working pressure and port size, and we will confirm the correct size against the datasheet curves on request before you order.
This configuration has a differential-pressure drain, the default for the GFR family, which handles collected condensate during normal operation. If your line runs unattended or you prefer to drain by hand, the automatic (code A) and manual (code M) drain versions are order options - tell us which suits your maintenance routine and we will quote the matching code.
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.