The AirTAC GFR400C10NWT AirTAC Filter Regulator 3/8 in NPT 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 GFR400C10NWT is a size 400 filter regulator that cleans compressed air and regulates downstream pressure in a single body. It removes water and particulate down to 5 um through its filter element, holds outlet pressure anywhere in the 0.15-0.9 MPa (20-130 psi) setting range, and is fitted with a differential-pressure drain that discharges collected condensate without a manual drain valve. The 3/8 in NPT port suits mid-size supply lines, the polycarbonate bowl gives a clear view of condensate level, a mounting bracket is included, and no gauge is fitted so you can pair it with your own panel gauge or order a gauged variant.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Options across the line include manual or automatic drains, a 40 um standard element or the 5 um W grade, embedded or external gauges, and PT, G or NPT threads. Rated flow figures are published as curves rather than a single number, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR400C10NWT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Cleaning and regulating the shop-air feed that actuates tool changers, clamps and coolant nozzles on a CNC mill or lathe, with the 5 um element guarding fine pilot valves.
Supplying filtered, pressure-set air to the stopper cylinders and pusher actuators along a carton or bottle packaging conveyor, with automatic condensate handling via the differential drain.
Conditioning the instrument-air branch that drives pneumatic control valves on a process skid, holding a steady set pressure so valve positioners and actuators repeat consistently.
Step up or down through the GFR sizes (200/300/400/600) and their ports (1/8 to 1 inch) to match the flow your line needs - we confirm the curve against your demand rather than quoting a single rating. Choose the drain: differential-pressure (this unit, drains on pressure change), automatic for continuous unattended discharge, or manual for hands-on control. Choose the element: 40 um standard for general protection, 5 um (W code, fitted here) for finer downstream cleanliness. Gauges, scale type, bracket and thread (PT standard, G or NPT to order) complete the configuration - this unit is NPT 3/8 with no gauge and a bracket included.
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 filter-regulator flow as performance curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your line pressure and air demand and we will confirm the flow from the datasheet curve for this exact model before you order.
The W in the code GFR400C10NWT selects the finer 5 um element for applications with sensitive downstream components, while the blank drain position is the differential-pressure type, which discharges condensate on pressure change without daily manual draining. A 40 um element and manual or automatic drains are available as alternative configurations if your application prefers them.
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.