The AirTAC GFR40015AF2TK 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 series is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This unit, GFR40015AF2TK, is the size 400 frame with a 1/2 in NPT port, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of automatic, manual or differential-pressure drains, a 5 um element option, gauge scales in MPa, psi or bar, and G or NPT thread options. We confirm flow and datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR40015AF2TK 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. |
| (blank) | Mounting bracket included. |
| (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) |
On an assembly cell with air-operated clamps and a small pneumatic press, this unit filters line water and particulate and holds the clamp pressure steady through repeated cycles, with the psi gauge giving the setter a direct reading at the cell.
Feeding cylinders and air blow-off nozzles on a carton-forming and sealing conveyor, the automatic drain clears condensate from a unit mounted high on the frame, and the check valve holds the set pressure against upstream dips.
On a CNC machining centre's air drop serving tool-change cylinders and chip ejection jets, the 40 um element protects directional valves from dirt and water, and the bracket gives a tidy panel-mounted installation next to the machine's valve stack.
Step up or down through the GFR sizes (200, 300, 400, 600) and their ports (1/8 in to 1 in) to match the air demand of the line; the 1/2 in NPT port on this size 400 unit suits mid-to-large actuator and tool circuits. Choose the drain to match access: automatic (as here) where the unit is hard to reach, manual where an operator is on hand, or the differential-pressure default. The 40 um element is standard; order the W code for the 5 um grade where finer protection is needed. The square gauge is fitted here in psi; MPa and bar scales are available, and an external round gauge is an option. PT is the standard thread; G and NPT are ordered via the code suffix. A bracket is included on this configuration.
One honest note before you order: AirTAC publishes flow as curves, not as a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you commit.
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 series as curves, not as a single rated figure, so we do not quote one number. Send us your application - port size, downstream demand and set pressure - and we will confirm the sizing from the datasheet on request.
The A in the code gives an automatic drain, which ejects collected condensate without anyone opening the bowl - useful for units mounted out of reach. The family also offers manual drain (code M) and the differential-pressure default; the drain choice also affects the regulator's adjustment range, so tell us your preference when ordering.
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.