The AirTAC GFR400C15LJC3WTK AirTAC Filter Regulator NPT1/2 5um 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 AirTAC GFR400C15LJC3WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built around a 1/2 in NPT port, a fine 5 um filter element (code W), a differential-pressure drain in the polycarbonate bowl, and the L low-pressure regulator type for circuits that must run below standard regulated pressures. It comes with a round pressure gauge on the bar scale, a reverse/check valve fitted (code K), and no mounting bracket (code J). 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 from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, gauge and scale options, and PT, G or NPT threads. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LJC3WTK AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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) |
Pneumatic clamps on a CNC fixture that must hold workpieces at a gentle regulated pressure, with the 5 um element keeping fine contamination out of the clamp valves.
Air preparation for sealing jaws and fold rollers on a packaging machine, where clean, finely filtered air and a low regulated setting protect the film and the actuators.
Supplying diverters, stoppers and pusher cylinders along a conveyor system, with 5 um filtration guarding the directional valves and the check valve holding the regulated circuit.
Size 400 with a 1/2 in port sits in the upper half of the GFR range; step up or down (200/300/400/600) according to the flow your line needs, and ask us to check the published flow curve against your demand before ordering. This unit carries the 5 um element (W) rather than the 40 um standard, which suits downstream valves and instruments that need finer air; the differential-pressure drain bleeds the bowl automatically as flow passes, with automatic (A) and manual (M) drains available as alternatives. The gauge fitted here is the external round type on the bar scale; an embedded square gauge and MPa, psi or bar scales are the other catalogue options. Thread is NPT here, with PT as the standard and G (BSPP) available to order, and the J code means no mounting bracket is supplied. Note this is the L low-pressure regulator type; its exact adjustment range is not published as a single figure, so we confirm it from the datasheet on request.
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 as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure, downstream pressure and air demand, and we will confirm the sizing from the datasheet on request before you order.
L marks the low-pressure regulator type, intended for circuits that must run below standard regulated pressures. The exact adjustment range for the low-pressure type is not published as a single figure, so we confirm it from the datasheet on request. The rest of the code reads: 1/2 in NPT port, 5 um element (W), differential-pressure drain, round bar gauge (C3), no bracket (J), and a reverse/check valve fitted (K).
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.