
The AirTAC GFR Filter Regulator GFR400C10ANWK 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 GFR series is a filter regulator: it removes water and particulate from compressed air and holds a steady downstream pressure in a single body. This 400-size unit is supplied with 3/8 in. PT ports, a polycarbonate bowl with automatic drain, the fine 5 um filter element (the W suffix), and no pressure gauge fitted. The trailing K marks a reverse (check) valve built into the unit. With the automatic drain, the outlet pressure is adjustable over 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C.
This is a genuine AirTAC part. G series filter regulators come in 200, 300, 400 and 600 sizes with ports from 1/8 in. to 1 in., a choice of differential-pressure, automatic or manual drain, a standard 40 um element or the 5 um W option, gauge options, an optional reverse valve, and G (BSPP) or NPT threads to order. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | Airtac GFR Filter Regulator GFR400C10ANWK |
|---|---|
| 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) |
The 5 um element conditions air feeding finishing guns and air-assisted applicators on a coating line, ordered in the check-valve configuration.
Conditioned, regulated air to a control panel of valve terminals and pilot circuits specified with the reverse (check) valve version.
Filtered, regulated air on an engineering test rig where finer filtration and the check-valve option are written into the rig specification.
Size 400 with 3/8 in. PT ports sits mid-range in the G series; step down to 300 or up to 600 if your circuit's flow sits elsewhere - we can check the published flow curves against your demand before you order. This version has the automatic drain, which discharges condensate without attention; manual and differential-pressure drains are available on the same body. The W suffix fits the 5 um element instead of the standard 40 um. The unit is supplied without a gauge - an embedded square gauge or an external round gauge with MPa, psi or bar scales can be ordered. The K suffix adds the reverse (check) valve; leave it off if you do not need one. PT thread is standard and G (BSPP) or NPT are order options.
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 G series as performance curves rather than a single rated figure, so we do not quote one number here. Tell us your application and we will confirm the sizing against the datasheet curves before you order.
The code carries no thread letter, so PT is the standard connection on this 3/8 in. unit. G (BSPP) and NPT versions are catalogue options you order instead - tell us which thread your piping needs and we will confirm the correct ordering code and the datasheet.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.