The AirTAC GFR400C15LJF2 AirTAC Filter Regulator PT1/2 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 GFR400C15LJF2 is a filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This 400-size unit has a PT1/2 (1/2 in) port with PT thread, and the L in the code marks the low-pressure regulator type, intended for circuits that hold a lower regulated pressure than a standard unit. The 40 um standard filter element handles everyday particulate, the differential-pressure drain bleeds collected condensate automatically as flow passes through, and the embedded square gauge reads regulated pressure in psi. No mounting bracket is included and no reverse/check valve is fitted.
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, optional 5 um filtration (code W), automatic or manual drains, alternative gauge scales, and G or NPT thread variants. Flow is published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure against your application before ordering.
| Model | GFR400C15LJF2 AirTAC Filter Regulator PT1/2 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 machining centre or CNC lathe, this unit filters water and chips-laden particulate out of the shop air and holds a steady regulated supply to the tool-changer and clamping solenoid valves, with the psi gauge giving the operator a direct read of set pressure at the machine.
On carton-sealing and case-erector machinery where cylinders and grippers are specified for lower working pressures, the low-pressure regulator type lets the line be set and held below standard regulator territory, while the 40 um element keeps debris out of the small control valves.
On a laboratory or QC test bench fed from a shop compressor, this unit dries and filters the incoming air, then regulates it to the pressure a test rig or pneumatic fixture requires, with condensate carried away by the differential-pressure drain during continuous flow.
Choose the size and port step against the air consumption of the circuit served: this unit is 400 size with a 1/2 in PT1/2 port, the largest of the mid-range GFR bodies before the 600 series. Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm the right size before you order. On this configuration the drain is differential-pressure, which suits continuously flowing lines; an automatic drain (code A) or a manual drain (code M) can be ordered instead if the duty differs. The 40 um element is the standard grade; specify 5 um (code W) where downstream equipment needs finer filtration. The fitted square gauge reads in psi; MPa or bar scales and an external round gauge are order options. PT thread is standard on this model, with G (BSPP) and NPT available to order, and the J code means no mounting bracket is fitted - order the bracket version if you want panel or surface mounting. As a low-pressure type, its regulation range differs from the standard unit; confirm the exact range with us for your setpoint.
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 number, so we do not quote a rated flow, Cv or SCFM figure. Tell us the air consumption and working pressure of your circuit and we will confirm from the datasheet whether this 400-size, 1/2 in unit is correctly sized before you order.
The L in the code marks the low-pressure regulator type, for circuits that need a lower regulated pressure than the standard GFR unit provides. Its exact regulation range is not published in the standard tables, so confirm your required setpoint with us and we will verify it from the datasheet. The rest of the decode is standard: 40 um filtration, differential-pressure drain, square psi gauge, PT1/2 port, no bracket and no check valve.
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.