The AirTAC GFR400C10C3TK 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 GFR400C10C3TK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration has a 3/8 in NPT port, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element is high enough, and a fitted reverse/check valve that holds the downstream setting if upstream supply is interrupted. Output pressure is adjusted across the standard 0.15-0.9 MPa (20-130 psi) range, and the round external gauge fitted here reads in bar. The maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element option, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT thread options, and a check-valve option. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10C3TK 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) |
Feed clean, regulated air to the tool-change clamps and air bearings of a CNC machining centre, with the check valve holding the set pressure through brief supply dips.
Condition the air ahead of the valve island on a cartoning or case-packing line, keeping water and 40 um particulate out of the directional valves while holding a steady working pressure.
Supply filtered, regulated air to the clamping cylinders of a pneumatic workholding press, where a stable set pressure keeps holding force consistent across shifts.
Start with the port step: size 400 with a 3/8 in port sits in the middle of the GFR range (200, 300, 400, 600), so step up to size 600 if your line may need more flow later, or down to 300 for compact points of use. Because flow is published as curves and not a single rating, ask us to confirm sizing against your air demand before ordering. Then fix the drain: this unit uses the differential-pressure drain (default); choose automatic (A) for hands-off condensate removal or manual (M) where you want a deliberate drain routine. The 40 um element here is the standard grade; specify the W code for the 5 um element if downstream equipment needs finer filtration. The round gauge fitted to this code reads in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. Thread is NPT on this unit; PT is the standard thread and G (BSPP) is also an order option. A mounting bracket is 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 G-series flow as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure and air demand and we will confirm the sizing from the datasheet curves on request before you order.
It decodes the options on the size 400 filter regulator: C is the external round gauge, 3 is the bar scale, T is the NPT thread (PT is the standard thread and G/BSPP is also available to order), and K means a reverse/check valve is fitted. Drain is the differential-pressure type (default) and the filter element is the standard 40 um grade.
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.