The AirTAC GFR400C15LJNWTK 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 GFR400C15LJNWTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/2 in NPT port on the size-400 housing, a 5 um filter element (code W), a differential-pressure drain on the polycarbonate bowl, and the low-pressure regulator type. A reverse/check valve is fitted; no pressure gauge is supplied and no mounting bracket is included.
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, standard 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge options and PT, G or NPT threads, rated for a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing). Because flow is published as curves rather than a single rating, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LJNWTK 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) |
Filtering and regulating reduced-pressure air to pneumatic clamps and swing clamps on a machining fixture, with the 5 um element protecting the clamp valves from dirt and the check valve holding the circuit if supply pressure dips.
A single-body filter regulator on the supply to a packaging line's cylinders and sealing stations, where the low-pressure type matches reduced set pressures and the differential-pressure drain clears condensate without manual attention.
Point-of-use air preparation for air cylinders and grippers on an assembly cell, combining water and particulate removal with regulation in one body to save panel space on a 1/2 in NPT drop.
Size 400 with a 1/2 in port is the step for lines whose demand sits above a 3/8 in unit; step down to size 300 for smaller circuits or up to size 600 for larger ones. The 5 um element (code W) suits finer pneumatic components and instruments, while the 40 um standard element covers general shop-air protection. The differential-pressure drain bleeds the bowl automatically as condensate builds, with no drain fitting to operate daily. This variant is supplied without a gauge - gauge options with MPa, psi or bar scales exist on the GFR line if you need a readout. PT is the standard thread; G (BSPP) and NPT are order options, and this code carries NPT. The low-pressure regulator type is selected for reduced set pressures; its exact adjustment range is not published as a single figure, so ask us to confirm it against your setpoint. Flow is published as curves, not a single rating, so send us your demand 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 flow for the GFR400 as curves rather than a single rated figure, so we do not quote a number here. Send us your line demand and operating pressure and we will confirm the sizing from the datasheet on request.
K means a reverse/check valve is fitted, which holds downstream pressure if the supply drops. W selects the 5 um filter element instead of the 40 um standard. Both are catalogue options on the GFR line, alongside drain type, gauge, thread and bracket choices.
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.