The AirTAC GFR400-15AJC3T 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 automatic 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 GFR400-15AJC3T is a 400-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is ordered with NPT1/2 ports, an automatic drain that expels collected condensate without manual attention, a standard 40 um filter element, and a round pressure gauge reading in bar. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi). The polycarbonate bowl suits non-freezing installations from -5 to 70 C.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) with port options from 1/8 to 1 inch, PT/G/NPT threads, manual or differential-pressure drain alternatives, a 5 um (code W) element option, and square or round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR400-15AJC3T 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 | 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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 a workshop pneumatic press: the 40 um element strips water and swarf from the shop-air supply while the regulator holds a steady working pressure at the press valve, and the automatic drain keeps the bowl clear through multi-shift running.
Conditioning air to the pick-and-place cylinders on a packaging conveyor: filtration protects the directional valves from particulate, regulation keeps gripper actuation consistent, and the automatic drain copes with condensate loaded into the line.
Supplying impact wrenches and tyre chucks in a vehicle service bay: the filter-regulator delivers clean, regulated air from the shop compressor ring main, with the bar gauge giving the technician a direct pressure readout at the drop.
Size and port set the capacity: the 400 size with 1/2 inch NPT ports sits in the upper-middle of the G-series range, so step up or down according to the air demand of the line. Choose the automatic drain (this unit, code A) where condensate must be removed without operator attention; manual and differential-pressure drains are available on other codes. The standard 40 um element suits general-purpose protection; specify code W for 5 um where finer filtration is needed. The round bar gauge (code C3) is fitted here; embedded square gauges and MPa or psi scales are alternatives. PT is the standard thread and G or NPT are order options - this unit is ordered in NPT. A mounting bracket is not included on this code (J) but is available on bracket variants. Because flow is published as curves rather than a single rating, 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 G-series flow as curves in the catalogue rather than a single rated figure, so we do not quote a number. Send us your air demand and line conditions and we will confirm the flow and sizing from the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without operator attention - useful on lines that run unattended. Manual (M) and differential-pressure (blank) drain variants of the same GFR400 size are available; ask us for the matching code.
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.