The AirTAC GFR400C15LJC1WTK AirTAC Filter Regulator NPT1/2 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 GFR400C15LJC1WTK is a size 400 filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This configuration is built around a 1/2 in NPT port, carries the 5 um (code W) filter element in place of the 40 um standard, and is the low-pressure regulator type for circuits that hold set pressures well below the standard range. A differential-pressure drain discharges collected condensate using the pressure differential created by air flow, and the round MPa-scale gauge gives a clear read of the regulated outlet. A reverse (check) valve is fitted, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR400 series belongs to the G-family filter regulator line, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in and PT, G or NPT threads, plus selectable drain type, filter grade, gauge and bracket. Rated inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Because AirTAC publishes flow as curves rather than a single rating, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LJC1WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
On a CNC machining cell, filtered and regulated air feeds the clamping cylinders that hold workpieces in fixtures. The 5 um element protects the clamping valves from fine particulate, the low-pressure type suits fixture circuits that clamp at modest set pressures, and the check valve holds the downstream circuit if supply pressure dips.
Packaging and bottling lines run dozens of air cylinders for diverting, sorting and capping. A size 400 filter regulator at the line's 1/2 in drop gives those actuators clean, moisture-reduced air at a stable set pressure, with the MPa gauge letting line staff verify the setting during changeover.
Air-operated process valves and their positioners need clean, dry pilot air held at a steady, often low, set pressure. This unit filters the pilot supply to 5 um, regulates it with the low-pressure type, and the fitted check valve prevents backflow through the pilot line during supply shutdowns.
Size 400 with a 1/2 in port is the step to choose when your circuit's flow demand sits above what 1/4 in or 3/8 in units carry - match the port step against the flow curve, not against a single rated number. The 5 um element (code W) suits downstream equipment that needs finer particulate control than the 40 um standard, and both grades share the same body, so the choice is made at order time. The low-pressure (L) regulator type is intended for circuits whose set pressure is well below the standard range; the exact adjustment span is not published in the standard table, so ask us to confirm it before ordering. The round MPa gauge, NPT thread and check valve are all fixed in this code, and no mounting bracket is included, so plan your panel or manifold fixing accordingly. Send us your flow and pressure requirements and we will confirm sizing against the datasheet curves 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 flow for this series as performance curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application's flow and pressure conditions and we will confirm the sizing against the datasheet curves on request before you order.
The L code selects the low-pressure regulator type, intended for circuits whose set pressure sits well below the standard adjustment range. The exact adjustment span for the low-pressure type is not published in the standard table, so ask us to confirm it for your set pressure. Everything else in the code - 1/2 in NPT port, 5 um element, differential-pressure drain, round MPa gauge and check valve - stays as decoded.
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.