The AirTAC GFR40015LJC2GK 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 GFR40015LJC2GK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single 1/2-inch (G1/2) body. This configuration is the low-pressure type, fitted with a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element rises, a 40 um standard filter element, an external round gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the supply is interrupted. It ships without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing); the polycarbonate bowl suits general-purpose compressed-air duty.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and with choices of thread (PT standard; G and NPT as order options), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale, bracket, and reverse valve. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40015LJC2GK 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 — round, 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). |
| C | Gauge shape: Round. 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) |
On a machining-cell fixture where workpieces are clamped by air cylinders running at deliberately low regulated pressure to avoid marking finished surfaces, this filter regulator cleans the supply, holds the set pressure, and the check valve keeps the clamp from releasing during a supply dip.
Feeding air cylinders and blow-off nozzles on a carton-sealing or wrapping conveyor, the G1/2 port serves the line's main drop, the 40 um element stops pipe scale and condensed water reaching the valves, and the differential-pressure drain clears condensate without daily manual attention.
On a test rig or lab bench where instruments and actuators need a stable, finely filtered low-pressure air supply, the low-pressure regulator type, psi-reading round gauge and built-in check valve give operators a clean, monitored and hold-stable feed at the bench.
Start with size and port: the GFR400 with its 1/2-inch G1/2 connection is the larger step in the range, so match it against the air demand of the circuit - flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering. This unit is the low-pressure type, intended where regulated pressure sits well below the standard range; the exact adjustment range for the low-pressure version is not published, so confirm it with us. The differential-pressure drain needs no operator attention, but an automatic drain (code A) or manual drain (code M) can be ordered instead. The 40 um element is the standard grade; specify code W for the 5 um fine grade if downstream equipment needs finer filtration. The round psi gauge is fitted here; embedded square gauges with MPa, psi or bar scales are the catalogue alternative. Thread is G (BSPP) on this code - PT is the standard thread, with G and NPT available to order - and the J code means no mounting bracket, so plan your own panel or manifold fixing.
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 series as characteristic curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your operating pressure and air demand and we will confirm the sizing from the datasheet curves on request before you order.
The L in the code makes this the low-pressure regulator version, intended for circuits regulated well below standard line pressure; the exact adjustment range for the low-pressure type is not published, so confirm it with us. The K code adds a reverse/check valve, which holds downstream pressure if the upstream supply is lost. This unit also carries a differential-pressure drain, a 40 um element, a round psi gauge, a G1/2 (BSPP) port and no bracket.
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.