The AirTAC GFR400C10LJC2G AirTAC Filter Regulator G3/8 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 GFR400C10LJC2G is a size 400 filter regulator: one body that removes water and particulate from compressed air and holds a reduced downstream pressure. This configuration carries a G3/8 port, the standard 40 um filter element, a differential-pressure drain (the catalogue default), a low-pressure regulator type, and a round external pressure gauge reading in psi. The bowl on size 400 is polycarbonate (PC). Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. No mounting bracket is fitted and no reverse (check) valve is included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, manual and automatic drain alternatives, a 5 um element under code W, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for this family is published as curves rather than a single rated figure, and the exact adjustable range of the low-pressure type is not listed on the sheet, so ask us and we will confirm both from the datasheet before you order.
| Model | GFR400C10LJC2G AirTAC Filter Regulator G3/8 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) |
Conditioning the air feed to a paint-spray booth line: the 40 um element keeps water and grit out of the spray gun while the low-pressure regulator holds a reduced, steady supply pressure to the gun circuit.
Feeding cleaned, regulated air to the cylinder circuit of a carton-sealing station on a packaging line, plumbed through the machine's 3/8 in drop, with the psi gauge giving operators a local set-point readout.
Supplying filtered, reduced-pressure air to the clamping cylinders on a machining fixture where the workpiece calls for a low holding pressure rather than full line pressure.
Size 400 with a G3/8 port suits circuits plumbed at 3/8 in; step down to 300 or up to 600 if your porting or demand differs. Flow is published as curves, not a single rating, so send us your required flow and set pressure and we will confirm the right size from the datasheet before ordering. The L code makes this the low-pressure regulator type, intended for circuits set below the standard range; we will confirm its exact adjustable range on request. Drain is differential-pressure as coded; automatic (A) and manual (M) drains are orderable alternatives. The 40 um element is standard here; specify W for the 5 um grade. The round gauge on this unit reads psi; the embedded square gauge with MPa, psi or bar scales is also available. Thread is G (BSPP); PT is the standard thread and NPT is an order option. The J code means no 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 flow for the GFR family as curves in the catalogue, not as a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will read the curve for size 400 and confirm sizing from the datasheet before you order.
L marks the low-pressure regulator type, whose adjustable range differs from the standard unit and is not listed as a single figure - we confirm it on request. C2 specifies the external round gauge with a psi scale; the embedded square gauge with MPa, psi or bar scales is also available in the family.
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.