The AirTAC GFR400C15AJF3WT AirTAC Filter Regulator NPT1/2, 5 um 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 AirTAC GFR400C15AJF3WT is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 1/2 in NPT port, a fine 5 um filter element (the standard element is 40 um; W codes the 5 um grade), an automatic drain that expels collected condensate without manual attention, and an embedded square pressure gauge reading in bar. 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 operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is fitted and no reverse/check valve is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and choices of drain type, filter grade, gauge scale, thread (PT standard, G and NPT as options) and 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 | GFR400C15AJF3WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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) |
Conditioning the shop-air feed to a CNC machine's pneumatic tool-clamp and chip-clearing circuits: the 5 um element keeps solenoid valves clean while the regulator holds a steady setting for consistent clamping force.
Feeding the stopper, pusher and clamp cylinders on a packaging conveyor, where the automatic drain copes with condensate from a long compressed-air run and the bar gauge lets operators verify the set pressure at a glance.
Preparing air for gripper and weld-gun actuation in a robotic welding cell, with the filtered, regulated supply protecting the cell's valves from water and particulate carry-over from the main drop.
Size 400 with a 1/2 in port sits in the upper half of the GFR range; step up to size 600 or down to size 300 depending on the flow your line needs - we confirm sizing against the published flow curves on request. On drain: automatic (this unit) suits duty where nobody walks the line to bleed bowls; manual drain suits attended installations; the default differential-pressure drain falls between them. On filtration: 40 um is the standard element for general plant air, while this unit's 5 um element (code W) protects downstream valves, cylinders and instruments that need cleaner air. The square gauge here reads in bar; MPa and psi scales are also available, and an external round gauge is an option. Thread is NPT on this unit; PT is the standard thread and G (BSPP) is orderable. A bracket can be added where the unit is not pipe-mounted; this configuration ships without one.
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 GFR400 as curves rather than a single rated figure, so quoting one number would be misleading. Tell us your inlet pressure, set pressure and the flow your application needs, and we will confirm the sizing from the datasheet curves before you order.
The 5 um element (code W, versus the 40 um standard) is the choice when downstream valves, cylinders or instruments need cleaner air than general plant filtration provides. The automatic drain bleeds collected condensate from the bowl on its own, which suits installations where nobody is available to drain a manual bowl regularly. Both are decodable options across the GFR range.
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.