The AirTAC GFR400C10MLJC2W AirTAC Filter Regulator PT3/8 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 GFR400C10MLJC2W is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is ordered with a PT3/8 port, the low-pressure regulator type, the finer 5 um filter element (the W grade, against the 40 um standard), a manual drain on the bowl, and an external round gauge with a psi scale. No mounting bracket is included with this code. The polycarbonate bowl suits the 400 frame; maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and with catalogue choices of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT to order), bracket and reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR400C10MLJC2W AirTAC Filter Regulator PT3/8 |
|---|---|
| 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) |
On a CNC machining centre with pneumatic clamping fixtures, this unit filters the shop air to 5 um and holds a reduced, low-pressure setting for the clamp cylinders, with the round psi gauge giving the operator a direct reading at the fixture panel.
At a paint or coating booth, the unit sits at the drop to the spray guns: the 5 um element strips water and particles that would ruin the finish, while the low-pressure regulator sets the gentle, stable supply the gun and its air controls need.
On a packaging machine with pick-and-place cylinders and directional valves, this filter regulator cleans the incoming air and regulates it to the pressure the valve island and actuators were set up for, with manual drain suiting a point an operator already walks past each shift.
Size is the first decision: 200, 300, 400 and 600 step up in port and flow capacity, so match the frame to the air demand of the circuit - the 400 frame here carries a 3/8 in PT port. Drain type is a real choice: differential-pressure (the default) drains as pressure drops across the element, automatic drains without attention, and the manual drain on this code is emptied by hand, which suits points where no drain line can be run or where an operator checks the unit routinely. Filter grade is 40 um standard; the W code on this unit selects the finer 5 um element for downstream valves and instruments that need cleaner air.
The gauge on this code is the external round type with a psi scale; the embedded square gauge and MPa or bar scales are the other catalogue options. This is the low-pressure regulator type - ask us to confirm its adjustment range from the datasheet, as it differs from the standard type. Thread is PT as standard, with G (BSPP) and NPT available to order, and a bracket can be added since this no-bracket code ships without one. Because AirTAC publishes flow as curves rather than a single rating, ask us to 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The M code means the bowl is emptied by hand, which suits points where no drain line can be run or where an operator checks the unit as part of a routine; the differential-pressure default and the automatic drain cover unattended installations. The W code selects the 5 um element, the finer option over the 40 um standard, for downstream valves and instruments that need cleaner air.
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.