The AirTAC GFR400C15JNWT AirTAC Filter Regulator, NPT 1/2 in, 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 GFR400C15JNWT is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your set point. This size 400 unit is fitted with 1/2 in NPT ports, a fine 5 um filter element (the W grade, finer than the standard 40 um), and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element is high enough. No gauge is fitted (code N) and no mounting bracket is included, so plan your panel or manifold accordingly. The standard regulator covers a 0.15-0.9 MPa (20-130 psi) setting range, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing). The size 400 bowl is polycarbonate (PC), with a metal bowl reserved for the size 600 frame.
This is a genuine AirTAC part from the G-series filter-regulator line, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge and thread options. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR400C15JNWT AirTAC Filter Regulator, NPT 1/2 in, 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) |
Feeds filtered, regulated air to the tool-change clamps and pneumatic actuators on a machining centre, where the 5 um element protects close-tolerance valves from particulate and the regulator holds a steady clamp pressure through the shift.
Sits at the drop point of a packaging line to condition air for diverter gates, sealing jaws and counting cylinders, keeping water out of the valve bank and holding set pressure as multiple stations cycle.
Installed at the point of use on a pneumatic press or forming cell, combining water and particle removal with a stable regulated supply so the press cylinder repeats its stroke under consistent air pressure.
Start with the port and size step: this unit is size 400 with 1/2 in NPT ports, the right step when your line runs 1/2 in piping and you need filter and regulation in one body rather than two separate components. Choose the drain to match access: differential-pressure (as fitted here) needs no attention, automatic drains on a timer-free principle, and manual suits rarely-serviced or intermittently run points. Choose 5 um (this unit) when downstream valves, cylinders or instruments want finer air than the standard 40 um element delivers. Gauges, scale (MPa, psi or bar), G/BSPP or NPT thread alternatives, and a mounting bracket are all orderable options - this configuration ships with none of them fitted.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, so we will not quote you a flow figure from a table. Tell us your application and we will confirm the sizing against the datasheet curves before you order.
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 performance curves, not as a single rated figure, so we do not state a number here. Contact us with your application details and we will confirm the flow and sizing against the datasheet curves before you order.
The code N means no gauge is fitted, so you order the gauge you want separately: an embedded square gauge or an external round gauge, with MPa, psi or bar scale. The regulator itself covers a 0.15-0.9 MPa (20-130 psi) setting range; with the differential-pressure drain fitted, that is the applicable range for this configuration.
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.