The AirTAC GFR400C15AJNWT 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 GFR400C15AJNWT is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built around a 1/2 in NPT port, a 5 um filter element (the finer of the two catalogue grades), and an automatic drain that expels collected condensate without manual attention. The standard regulator covers 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 pressure gauge is fitted on this variant, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, gauge options and bracket choices. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15AJNWT 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 machining centre's pneumatic valves and clamping fixtures: the 5 um element catches fine particulate ahead of sensitive valve spools, the regulator holds a steady setting, and the automatic drain handles condensate on a continuously running machine.
Feeding the tape-head and flap-tuck cylinders on a carton-sealing conveyor line, where the regulator keeps actuation pressure consistent across shift changes and the automatic drain copes with condensate arriving from a long compressed-air main.
Supplying filtered, regulated air to lab automation equipment such as liquid-handling stations and sample conveyors, where the finer 5 um grade protects small-bore pilot lines and the 1/2 in NPT port matches the facility drop.
Start with the port step: size 400 carries a 1/2 in port, here specified in NPT thread (PT is the standard thread; G and NPT are catalogue options to order). Because flow is published as curves rather than a single rating, ask us to confirm sizing against your required flow before ordering. On drainage, the automatic drain on this unit suits installations that are not attended daily; manual and differential-pressure drains are available on other variants. On filtration, 40 um is the standard element and 5 um (this unit, code W) is the finer option for more sensitive downstream equipment. Gauge (square embedded or external round, with MPa, psi or bar scales) and bracket options can be selected on other configurations; this variant has neither gauge nor bracket.
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 GFR series as curves, not as a single rated number, so we do not state a figure here. Tell us your application flow and pressure and we will confirm the sizing against the datasheet curves on request before you order.
The code W in GFR400C15AJNWT selects the 5 um element instead of the 40 um standard grade, for finer protection of downstream equipment. The code N means no pressure gauge is fitted; configurations with an embedded square gauge or an external round gauge (MPa, psi or bar scales) are available in the series if you want a local pressure indication.
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.