The AirTAC GFR400C10MJC3WTK 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 AirTAC GFR400C10MJC3WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a manual drain for the bowl, an external round gauge reading in bar, and a built-in check valve that blocks reverse flow through the unit. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this 400 size is polycarbonate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and each size can be ordered with a choice of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT as options), bracket and check valve. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C10MJC3WTK 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 fixture: the regulator holds a stable set pressure to the cylinder while the 5 um element keeps scale and pipe debris out of the valve stack, and the check valve stops backflow through the unit.
A filtered, regulated drop point on a packaging or filling line, where the manual drain suits a shift-based maintenance routine and the bar gauge gives operators a local pressure readout at the machine.
Supplying diverters, stoppers and lifters on a conveyor line: the check valve holds the downstream circuit against upstream dips, and the 3/8 in port matches the main run feeding the distribution manifold.
Size 400 with a 3/8 in port sits in the upper-middle of the GFR range; step up to 600 or down to 300 depending on the flow your line needs - we can check the curve against your demand before you order. This unit carries the 5 um element (code W) where the standard grade is 40 um, so choose it when downstream valves or instruments want finer filtration. The manual drain (code M) means someone bleeds the bowl on a routine; pick the automatic or differential-pressure drain code instead if the installation is unattended. The round gauge here reads in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. Thread is NPT on this code (PT is the standard form; G is also available to order), the bracket is omitted (code J), and the check valve (code K) is fitted. Flow is published as curves, not a single rating, so let us confirm sizing against your application before ordering.
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 as curves, not as a single rated number, so there is no honest one-line figure to quote. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: the bowl is emptied by hand as part of a maintenance routine, which suits attended installations. The same size 400 filter regulator can be ordered with an automatic drain (code A) or the differential-pressure drain (no code) if the unit will run unattended.
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.