The AirTAC GFR400-15AJF2TK 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 GFR400-15AJF2TK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration has 1/2 in NPT ports, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, an embedded square gauge reading in psi, and a built-in reverse/check valve. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits general plant air; only size 600 units use an aluminium bowl.
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and is available with manual or differential-pressure drains, a 5 um element (code W), MPa/psi/bar gauge scales, G or NPT thread options, and with or without a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400-15AJF2TK 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 — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Point-of-use conditioning on a factory air drop: the filter section strips water and 40 um-plus particulate from the header supply, the regulator holds a steady downstream pressure to the cell, and the automatic drain keeps condensate off the floor without daily attention.
Feeding cylinders and air controls on a packaged conveyor line: clean, regulated air keeps cylinder speed consistent along the belt run, the check valve holds the set pressure against upstream dips, and the psi gauge lets maintenance verify the setting at a glance.
Conditioning the pneumatic supply to clamps, tool-changers and part-cleaning jets on a CNC or machining cell: the 40 um element protects valves from debris and water, and the regulator holds the clamp pressure the process was set up with.
Size and port drive the choice: this is size 400 with 1/2 in NPT ports, the step to take when your line flow and pipework sit above the 300/1/2 in-down range - match the size against the flow curves for your demand. Drain type is a real decision: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure drain suits steady-flow lines. The 40 um element is standard; specify the 5 um W grade when downstream equipment needs finer filtration. The square gauge here reads psi; MPa and bar scales are also available, and an external round gauge is optional. Thread is NPT on this model; PT is the standard offering and G (BSPP) is an order option. No mounting bracket is included with this code (J).
One honest note before you order: flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for this exact configuration on request before you order.
The trailing T means this unit has NPT 1/2 in ports. PT is the standard thread offering for the GFR series, and G (BSPP) is also a catalogue option - both are ordered by specifying the thread code in the model number, not as a separate fitting.
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.