The AirTAC GFR400C15LJF3T 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 GFR400C15LJF3T is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with 1/2 in NPT ports. This configuration is the low-pressure (L) type, fitted with an embedded square gauge scaled in bar, a differential-pressure drain, and the standard 40 um filter element. The polycarbonate bowl collects condensate and solids dropped out of the compressed air, the unit is rated for a maximum inlet pressure of 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is included (code J) and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family is made in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, PT, G or NPT threads, a choice of differential-pressure, automatic or manual drains, a 40 um standard or 5 um (W) filter grade, and gauge or no-gauge options. Flow for the series is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C15LJF3T 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) |
Feeding fixture clamps on a machining centre that hold at low regulated pressure, with the square bar gauge giving the operator a direct reading at the setpoint and the 40 um element keeping the clamp valves clean.
Installed on the drop leg feeding a packaging machine, where the filter section removes water and pipe scale ahead of the directional valves and cylinders and the differential-pressure drain handles condensate in service.
Regulating the air feed to spray guns in a finishing booth, where the low-pressure type matches low set pressures and the bowl catches condensate before it reaches the gun and the finish.
Size and port: the 400 size sits between the 300 and 600 in port and flow capacity; this unit carries 1/2 in NPT threads (PT is the AirTAC standard thread, with G and NPT as order options - here specified as NPT). Choose the drain to match service: differential-pressure (this unit, the default), automatic (A) for hands-off condensate removal, or manual (M) where you want drain control. The filter grade is 40 um standard; specify the W variant for the 5 um element if downstream equipment needs finer filtration. The gauge on this unit is the embedded square type scaled in bar; external round gauges with MPa, psi or bar scales are available as options. This is the low-pressure (L) type, so confirm its adjustable range against your set pressure before ordering. Flow for these units is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 a rated flow number for this unit. Send us your application details and we will confirm the flow and sizing from the datasheet on request.
This unit is the low-pressure (L) type, and the exact adjustable range for that version is not published in the catalogue data we transcribe - tell us your set pressure and we will confirm the range from the datasheet. The drain on this unit is the differential-pressure type (the default); automatic (A) and manual (M) drains are orderable variants.
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.