The AirTAC GFR400C10MLC2K AirTAC Filter Regulator PT3/8 Low-Pressure 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 GFR400C10MLC2K is a size 400 filter regulator: it removes water and particulate from compressed air through a 40 um element and regulates downstream pressure in the same body. This configuration is the low-pressure type, suited to circuits that run at reduced supply pressures, with a PT3/8 port, a manual drain for emptying the bowl, a round pressure gauge reading in psi, and a built-in reverse (check) valve that holds downstream pressure when the upstream supply is lost. 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 family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and can be ordered with automatic, manual or differential-pressure drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, G or NPT threads, and with or without a bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C10MLC2K AirTAC Filter Regulator PT3/8 Low-Pressure |
|---|---|
| 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 carton-sealing or case-packing line, clamping cylinders often run at deliberately low set pressures to hold product without crushing it. This low-pressure filter regulator cleans the shop air to 40 um and holds the reduced setting, while the check valve keeps the clamp from releasing during a brief supply drop.
Stopper and pusher cylinders along a bottling conveyor need air free of rust and water carryover and a steady, moderate supply pressure. This unit filters and regulates at the line take-off, and the manual drain lets an operator clear accumulated condensate during shift checks.
Workholding fixtures on a machining centre depend on stable air pressure for consistent clamping force. Feeding the fixture circuit through this filter regulator removes water and particles before the valves, and the psi gauge gives the operator a direct reading of set pressure at the cell.
Choose the size and port step against the air your circuit actually uses: this unit is size 400 with a 3/8 inch PT port, one step up from the 300 series. Drain type is a real decision: this version is manual drain, which means someone empties the bowl; choose automatic drain if the installation is unattended, or the differential-pressure default where periodic checks are acceptable. The 40 um element is the standard grade; specify the W option for 5 um where finer filtration is needed. This is the low-pressure regulator type - confirm its adjustment range against your set pressure before ordering. The round gauge here reads psi; square embedded gauges and MPa or bar scales are alternatives. Thread is PT as standard, with G (BSPP) and NPT available as order options, and the mounting bracket is included.
Flow for this series is published as curves, not a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm sizing and 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 GFR series as curves, not as a single rated figure, so we do not quote a flow number. Tell us your inlet pressure, set pressure and expected air consumption, and we will confirm the sizing from the datasheet before you order.
The M in the code means the bowl is emptied by hand: an operator opens the drain when condensate has collected. It is simple and reliable for attended installations. If the unit will sit in an inaccessible spot or run unattended, order the automatic-drain version instead - it is the same filter regulator with a self-draining bowl.
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.