The AirTAC GFR40015LJF2G AirTAC Filter Regulator, G1/2, 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 PT1/2" 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 GFR40015LJF2G is an AirTAC GFR400 filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body. This 400-size unit is built with a G1/2 (BSPP) port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a fitted embedded square gauge reading in psi. It is the low-pressure (L) version, intended for circuits that run below the standard regulator range; its exact adjustment range is not published, so confirm it against your setpoint before ordering.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um (W) elements, automatic or manual drains, and MPa, psi or bar gauge scales. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR40015LJF2G AirTAC Filter Regulator, G1/2, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — square, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding clamping cylinders or pneumatic presses that hold workpieces at reduced pressure, where the low-pressure regulator type gives finer control in the lower part of the range and the 40 um element keeps debris out of the valve seats.
Mounted at the drop of a packaging or cartoning machine to clean condensed water and particles from the shop air and hold a steady, reduced supply pressure to the machine's actuators, with the psi gauge giving operators a local setpoint readout.
Installed on individual machines in a plant running moderate supply pressures, combining filtration and regulation in one body to save panel space, with the differential-pressure drain keeping the PC bowl clear of accumulated condensate during production.
Size up by port and required flow: this unit is size 400 with a G1/2 port; step down to 300 or up to 600 if your line needs a different flow band. The 40 um element suits general-purpose air prep; choose the W option for a 5 um grade. The differential-pressure drain needs no operator attention, but an automatic (A) or manual (M) drain can be ordered instead. The fitted square gauge reads psi; MPa or bar scales and an external round gauge are alternatives. Thread here is G (BSPP); PT (standard) and NPT are order options. Note this is the low-pressure type and carries no mounting bracket (J).
One honest routing note: AirTAC publishes flow only as curves, not a single rating, and the low-pressure adjustment range is not in the published data. Ask us to confirm both 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 only as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and expected air demand and we will confirm the flow curve and correct size from the datasheet on request.
The L in the code marks the low-pressure regulator type, intended for circuits that run below the standard adjustment range; the exact range is not published, so confirm it against your setpoint with us. The drain is differential-pressure: as air flows through the unit, the pressure differential automatically expels collected condensate from the PC bowl, with no manual draining needed.
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.