The AirTAC GFR400C10LJF2G 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 GFR400C10LJF2G is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries 3/8 inch G (BSPP) ports, a 40 um standard filtration element, a differential-pressure drain on the bowl, and the low-pressure regulator type. A square pressure gauge graduated in psi is fitted, and no mounting bracket is included with this code. The polycarbonate bowl is standard at this size, the 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 from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Across the series you can order automatic or manual drains, a 5 um fine-filtration element (code W), different gauge scales, PT or NPT threads, and brackets. Flow for this series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C10LJF2G 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) |
Filter-and-regulate the shop air feeding pneumatic clamps and swing cylinders on a machining centre fixture, where the low-pressure regulator type lets the line run at reduced set points instead of full header pressure.
Clean and regulate the supply to sealing jaws, pushers and flap-tuck cylinders on a packaging line, with the 40 um element and integral bowl protecting valves from water and debris carried in the plant air.
Condition and regulate the air feeding pilot solenoids and small rack-and-pinion actuators on treatment-plant valve manifolds, where the low-pressure type matches the modest actuation pressures such panels use.
Start with size and port: this unit is size 400 with 3/8 inch G (BSPP) ports; smaller and larger sizes (200 to 600) step port and flow capacity up or down, so match the size to the air demand of the circuit. Drain choice matters: this code uses the differential-pressure drain (the default), while automatic (A) and manual (M) drains are order options on the family. Filtration is 40 um standard here; specify W for the 5 um element where finer protection is needed. The fitted square gauge reads in psi; external round gauges and MPa, psi or bar scales are available. Thread: this unit is G (BSPP); PT is the standard thread for the series and NPT is an order option. Brackets can be added if this no-bracket code does not suit your mounting.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, and the adjustment range for the low-pressure regulator type is not published in the data we hold. Ask us to confirm the flow curve and regulator figures 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 rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the flow curve and sizing from the datasheet on request before you order.
The L in the code marks the low-pressure regulator variant rather than the standard one. The exact adjustment range for this low-pressure configuration is not published in the data we hold, so please confirm the range with us; the unit's maximum inlet pressure remains 1.0 MPa (145 psi).
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.