The AirTAC GFR40015LJF2 AirTAC Filter Regulator 1/2 in PT, 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 AirTAC GFR40015LJF2 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is the size 400 frame with a 1/2 in PT threaded port, the low-pressure regulator type, a differential-pressure drain on the bowl, and the standard 40 um filter element. It ships with the embedded square gauge fitted, scaled in psi, and no mounting bracket (J code). The maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G (BSPP) and NPT thread options to order, manual or automatic drain alternatives, a 5 um filter element (code W), and gauge scale choices in MPa, psi or bar. 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 | GFR40015LJF2 AirTAC Filter Regulator 1/2 in PT, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding cleaned, regulated air to the cylinders and actuators on a carton-forming or wrapping line, with the 1/2 in port matching the main drop to the machine.
Supplying filtered, pressure-controlled air to clamp and unclamp workholding fixtures on a CNC cell, where a stable low setpoint keeps clamping force consistent.
Preparing air for diverters, stops and pushers along a sortation or assembly conveyor, with the psi-scaled square gauge giving operators a local setpoint readout.
Choose the size 400 / 1/2 in port step when your line's required flow calls for the larger frame; flow is published as curves, not a single rating, so confirm sizing against the application before ordering. This configuration carries the differential-pressure drain (the default), which bleeds the bowl automatically as pressure drops; automatic (A) and manual (M) drain versions are available in the family if your duty suits them better. The standard 40 um element suits general air preparation; specify the 5 um (W) element where finer filtration is needed. The fitted square gauge is scaled in psi here; MPa and bar scales and an external round gauge are options. Thread is PT as standard - G (BSPP) and NPT are order options - and the J code means no mounting bracket is included, so add one if you need panel or surface fixing.
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 this series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application and we will confirm the sizing against the datasheet on request.
The L code selects the low-pressure regulator type of the GFR series; its exact adjustment range is not published in the material we hold, so confirm it with us on request. This configuration includes the embedded square gauge scaled in psi; MPa and bar scales and an external round gauge are available as options.
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.