The AirTAC GFR400C10AJNWT AirTAC Filter Regulator NPT3/8 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 GFR400C10AJNWT is a size 400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in a single body. This configuration carries a 3/8 in NPT port, a 5 um filter element (code W, one step finer than the 40 um standard), an automatic drain that expels collected condensate without manual attention, and the standard regulator with a 0.15-0.9 MPa (20-130 psi) setting range. No pressure gauge is fitted (code N) and no mounting bracket is included, so plan a panel or bracket arrangement at installation.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge and thread options (PT is the standard; G and NPT are order options), and bracket choices. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C10AJNWT AirTAC Filter Regulator NPT3/8 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) |
Feeding tool-clamp cylinders and chip-clearing blow-off circuits on a machining center: the 5 um element keeps valve spools clean while the regulator holds a steady setpoint for consistent clamping action.
Supplying the sealing-head cylinders and flap-folders on a carton-sealing conveyor: filtered, regulated air keeps stroke timing repeatable through a full shift, and the automatic drain handles condensate without an operator stopping by.
Prepping shop air for impact wrenches, lift controls and tire-changing equipment in a vehicle maintenance bay: the regulator gives technicians a stable working pressure and the 5 um element protects the tool circuit's valves.
Step through the decodable choices in order. First, size and port: the 400 frame with a 3/8 in NPT port suits lines fed at that pipe size, and the next size step up or down changes both port and flow capacity, so match it to your supply piping. Second, drain: automatic (this unit) suits unattended duty; manual suits periodic checks; differential-pressure drain bleeds only when the element loads up. Third, element grade: 40 um is the standard general-purpose grade, 5 um (this unit, code W) protects finer control valves and sensitive actuators. Fourth, gauge and scale: this unit ships without a gauge, but gauge variants with MPa, psi or bar scales exist in the family. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also available. Bracket is omitted on this code.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a flow number. Send us your application details 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 family as performance curves rather than a single rated figure, so we do not quote one number. Tell us your inlet pressure, setpoint and downstream demand and we will confirm the flow from the datasheet curves for your application on request.
Correct: the N in the code means no gauge is supplied, so you would set pressure against your own downstream gauge or add one separately. The GFR family also includes variants with an embedded square gauge or an external round gauge in MPa, psi or bar scales - ask us for the gauge-equipped code if you prefer one ordered with the unit.
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.