The AirTAC GFR400C10AJC3TK AirTAC Filter Regulator NPT3/8 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 GFR400C10AJC3TK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one body. This configuration is a size 400 unit with a 3/8 in NPT port, an automatic drain, a 40 um filter element, a round bar-scale gauge, a built-in reverse (check) valve, and no mounting bracket. The regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), the unit takes up to 1.0 MPa (145 psi) inlet, and it operates at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options including manual or automatic drains, a 5 um element (code W), embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR400C10AJC3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 a pneumatic press or clamping station: the 40 um element strips water and swarf from the shop-air main while the regulator holds a steady setpoint to the cylinder valves, and the check valve helps hold downstream pressure if the supply dips.
Supplying air to packaging and case-sealing machinery: filtered, regulated air keeps pick-and-place cylinders and diverters running consistently, and the automatic drain empties the bowl without a technician stopping the line to bleed condensate.
Conditioning air ahead of spray guns and air tools in a finishing shop: the 3/8 in port suits a dedicated drop, the bar-scale gauge gives a readable setpoint at the gun panel, and the 40 um element keeps water spots and debris out of the finish.
The real choices on this family: step through sizes 200/300/400/600 and ports 1/8 to 1 in to match the flow your line needs; pick the drain - differential-pressure (standard), automatic as fitted here, or manual (manual drain widens the regulation range down to 0.05 MPa); choose the 40 um standard element or the 5 um W option; select gauge style and scale (embedded square is standard, external round is optional, in MPa, psi or bar); and order PT (the standard thread), G or NPT. Brackets are optional. Flow is published as curves, not a single rated figure, so send us your application and we will confirm sizing from the datasheet 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 GFR400 series as curves rather than a single rated figure, so we do not quote a number here. Send us your application - line pressure, downstream demand and acceptable pressure drop - and we will confirm the sizing from the datasheet on request.
The automatic drain (code A) ejects collected condensate from the bowl on its own, which suits supply points that are not drained daily; a manual-drain version is available if you prefer scheduled draining. The fitted reverse (check) valve (code K) helps hold downstream pressure if the upstream supply is lost. The round gauge on this configuration reads in bar; MPa and psi scales are order options.
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.