The AirTAC GFR40015LJF2GK 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 AirTAC GFR40015LJF2GK is a GFR-series filter regulator: water and particulate removal plus pressure regulation combined in a single 400-size body with a G1/2 (BSPP) port. This configuration carries the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, and the low-pressure regulator type for circuits that run below standard line pressures. An embedded square gauge with a psi scale is fitted, and a reverse/check valve is built in to hold downstream pressure when the upstream supply is lost. No mounting bracket is included with this code.
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, and options include manual or automatic drains, a 5 um element (code W), alternative gauge scales (MPa/psi/bar) and NPT or G threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015LJF2GK 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 | Fitted (reverse flow permitted) |
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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Feeds a workholding clamp circuit that must run below standard line pressure: the low-pressure regulator type holds the reduced setting while the 40 um element keeps water and swarf out of the clamp cylinders.
Sits at the drop to a conveyor line's air cylinders, filtering condensate and pipe-scale from the shop air and regulating pressure for the diverters and pushers, with the check valve holding the circuit if supply drops.
Provides cleaned, pressure-controlled air to sensitive dosing and coating apparatus, where the 40 um element and stable reduced pressure protect metering valves, and the psi-scale gauge lets operators verify settings directly.
Start with the port step: this unit is 400 size with a 1/2 in G-thread port, one step up from the 300 series - match the size to the air consumption of the circuit rather than oversizing on pipe diameter alone. Drain choice is decodable: differential-pressure (this unit, automatic in operation), automatic (code A) or manual (code M) if you prefer scheduled draining. The filter grade is 40 um standard; specify W for the 5 um element where downstream equipment needs finer filtration. Gauge is the embedded square type; psi scale on this code, with MPa or bar scales orderable. Thread is G (BSPP) here, while PT is the catalogue standard and NPT is an order option - PT is the standard thread, not a delivery promise. Brackets are optional (this code omits one).
One honest routing point: AirTAC publishes flow for this family as curves, not a single rated number, and the low-pressure regulator type has no published adjustment range on our sheet. Ask us to confirm sizing and the datasheet figures against your application before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as performance curves rather than a single rated figure, so we do not quote a rated l/min, m3/h or SCFM number. Send us your application details and we will confirm the flow figures from the datasheet so you can size the unit correctly before ordering.
The L code makes this a low-pressure regulator type, intended for circuits that run below standard line pressures; the exact adjustment range for this variant is not published on our sheet, so ask us to confirm it. The K code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is interrupted. This unit also has a differential-pressure drain, a 40 um element and a square psi gauge, with no mounting bracket included.
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.