The AirTAC GFR400C10LJC2 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 GFR400C10LJC2 is a size 400 filter regulator: one body that first strips water and particulate from compressed air, then regulates downstream pressure. This configuration is a low-pressure regulator type, fitted with a 40 um standard filter element and a differential-pressure drain, which bleeds accumulated condensate whenever the pressure differential across the bowl is high enough. It is supplied with an external round pressure gauge reading in psi, and ships without a mounting bracket. The 3/8 in PT port is the standard thread for this model; G (BSPP) and NPT versions are catalogue options to order.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, a 40 um standard or 5 um (code W) fine filter element, standard or low-pressure regulation, gauge scale in MPa, psi or bar, and an optional reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures on request.
| Model | GFR400C10LJC2 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 fixture-clamping manifold that holds workpieces at a low setpoint, this low-pressure GFR400 filter regulator cleans the supply air and holds the reduced pressure steady, with the psi gauge giving the operator a direct reading at the cell.
At the 3/8 in air drop feeding a machining centre's pneumatic valves and tool-change cylinders, the unit removes condensate and pipe scale with its 40 um element while regulating pressure for the machine's control circuit.
Upstream of the diverters, lifters and seal cylinders on a packaging conveyor line, this filter regulator keeps water and particulate out of the actuators and lets the line supervisor set and monitor a stable low operating pressure.
Start with size and port: the GFR400 steps up from the 300 series with a 3/8 in PT port, so choose it when your line's flow demand outgrows a 1/4 in unit - and confirm the match against the published flow curve before ordering, since AirTAC does not publish a single rated-flow figure. Next, pick the drain: this model uses the differential-pressure drain (the default); automatic (code A) or manual (code M) drains are available if your duty cycle or maintenance routine suits them better. The 40 um element fitted here is the standard grade; specify the W suffix for a 5 um element where downstream equipment needs finer filtration. As a low-pressure (L) type, this unit is intended for circuits set below the standard regulator's range - the exact adjustment range for the low-pressure version is not published, so confirm it with us against your setpoint. The round psi gauge fitted here can alternatively be ordered square-embedded, or in MPa or bar scale. Thread is PT as standard; G and NPT are order options. A mounting bracket is optional (code J omits it).
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 we do not quote a flow figure. Tell us your application's flow demand and set pressure and we will confirm the sizing against the datasheet curves on request before you order.
The L in the code marks this as the low-pressure regulator type, intended for circuits set below the standard regulator's adjustment range; the exact range for the low-pressure version is not published, so confirm it with us against your setpoint. The drain is the differential-pressure type (the default): it discharges accumulated condensate automatically when the pressure differential across the bowl is sufficient, with no manual intervention. Automatic (A) and manual (M) drains are available as alternative order codes.
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.