The AirTAC GFR400-15LJC1T 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 PT1/2" 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 GFR400-15LJC1T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is ported NPT1/2, is the low-pressure type, and filters to the standard 40 um grade. Condensate is removed by the differential-pressure drain, and an external round gauge with an MPa scale is fitted so the set pressure can be read at a glance. It carries no lubricator, so downstream lubrication must be handled separately if the application needs it.
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 or 5 um (W) filtration, gauge and scale options, and PT, G or NPT threads. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR400-15LJC1T AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — round, MPa 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to clamping fixtures on a CNC machining cell, where clean air and a steady low set pressure keep workholding consistent across the shift.
Conditioning the air supply to cylinders and diverters on a carton packaging line, protecting the actuators from water and debris while holding the pressure the machine was set up for.
Supplying filtered, regulated air to spray guns in a paint finishing booth, where particulate and water in the line would otherwise show up as defects in the coating.
Size 400 with a 1/2 in port sits toward the larger end of the GFR range, so step up or down by port size against the air demand of the line. This unit is the low-pressure type (code L), so choose it where the working pressure sits below what a standard regulator targets; the exact adjustment range is not published, so confirm it with us before ordering. Filtration is the standard 40 um grade; specify code W for 5 um where finer particle removal is needed. The drain here is differential-pressure, which discharges as pressure drops; automatic (A) or manual (M) drains are alternatives. The fitted round gauge reads in MPa, with psi and bar scales available, and an embedded square gauge is the standard alternative. Threads come as PT (standard), G or NPT - this unit is NPT. A mounting bracket is not included with the J code.
Flow for this family is published as curves, not a single rated figure, 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 this family as curves rather than a single rated figure, so we do not quote a number. Send us your application details and we will confirm the flow and sizing from the datasheet on request.
The L code marks the low-pressure type of regulator. It is chosen where the downstream working pressure sits below what the standard type targets. The exact adjustment range for the low-pressure type is not published in the material we hold, so confirm it with us before ordering. Everything else in this code decodes as: NPT1/2 port, differential-pressure drain, 40 um filtration, no bracket, and a fitted round gauge with an MPa scale.
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.