The AirTAC GFR400C15LJF2WTK 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 AirTAC GFR series combines water and particulate filtration with pressure regulation in a single body, so one unit cleans the air and holds a set downstream pressure. This GFR400C15LJF2WTK is the size 400 frame with a 1/2 in NPT port, the fine 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and the low-pressure regulator type for circuits set well below standard working pressures. It comes with the embedded square gauge scaled in psi and a reverse/check valve fitted, and it is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um fine filtration, MPa, psi or bar gauge scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application before ordering.
| Model | GFR400C15LJF2WTK 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) |
Filtered, low-pressure regulated air feeds clamping cylinders on a fixture, with the psi gauge letting the setter read the clamp setting directly and the check valve holding the circuit if upstream supply dips.
A process skid that needs clean, gently regulated air takes 5 um filtered air through the 1/2 in NPT connection, with the differential-pressure drain keeping condensate off the instrument train.
Sorting and gating cylinders on a packaging conveyor run on filtered air held at a low, stable setting, so product handling stays gentle and repeatable shift after shift.
Start with the port step: size 400 with a 1/2 in NPT port suits lines where the machine's air supply is plumbed at 1/2 in, and larger sizes give more flow capacity at the same pressure drop. Because flow is published as curves rather than one rated number, send us your flow and pressure conditions and we will confirm the right size from the datasheet. Choose the drain next: this unit uses the differential-pressure drain (the default), while automatic and manual drains are order options. The 5 um element (code W) is the finer choice over the 40 um standard where downstream valves and cylinders need cleaner air; note the finer element costs more differential pressure. The embedded square gauge here is scaled in psi, with MPa or bar scales and an external round gauge available as options. PT is the standard thread; G and NPT are catalogue options ordered by suffix, as with the T in this code. A mounting bracket can be added if you order the version without the J suffix; this unit has no bracket.
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 GFR series as curves rather than a single rated figure, so we do not quote one number. Tell us your inlet pressure, set pressure and required flow, and we will confirm the sizing from the datasheet on request before you order.
The L in the code marks the low-pressure regulator type, intended for circuits set well below standard working pressures; the exact adjustment range for this variant is not published in the material we hold, so confirm the set point with us on request. Max inlet pressure is still 1.0 MPa (145 psi), operating temperature is -5 to 70 C non-freezing, and the embedded square gauge is scaled in psi for direct setting.
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.