The AirTAC GFR40015LJC2G 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 GFR40015LJC2G is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is sized 400 with G1/2 ports, carries the standard 40 um filter element, and uses the differential-pressure drain, which bleeds accumulated condensate automatically whenever the pressure differential across the bowl is sufficient - no daily manual draining on lightly loaded lines. It is the low-pressure (L) type, so it is intended for circuits that hold a reduced working pressure rather than full line pressure. A round gauge scaled in psi is fitted so operators can read and set the downstream pressure directly, and the polycarbonate bowl suits a 400-size unit.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G, NPT or PT threads, 40 um or 5 um (W) filtration, differential-pressure, automatic or manual drains, and gauge choices. We confirm flow and other datasheet figures on request, as flow is published as curves rather than a single rating.
| Model | GFR40015LJC2G 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 | 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). |
| 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. |
| (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) |
Air clamps and swing cylinders on a machining or assembly cell need clean, dry air held at a steady reduced pressure. This filter regulator conditions the supply and lets the setter dial in the clamp pressure on the fitted psi gauge.
Stop gates, pushers and diverters on a packaging conveyor run all shift and are sensitive to pressure drift. A G1/2 filter regulator at the line drop keeps the actuators fed with filtered air at a stable low setting.
Spray guns and air-assisted applicators in a finishing booth demand particulate-free air at a low, repeatable pressure. This low-pressure type filter regulator sits at the booth drop, with the differential drain handling condensate between batches.
Start with the port and size: this unit is size 400 with G1/2 (1/2 in) ports, the right step for lines with substantial air demand; step down to 200/300 or up to 600 if your flow requirement differs. Choose the drain to match maintenance reality - differential-pressure (this unit) drains itself under flow, automatic (A) discharges on a timer-like basis, and manual (M) needs someone to open the bowl. Pick 40 um for general circuit protection or the 5 um W element for finer pre-filtration. Gauge options are the embedded square gauge or an external round gauge, scaled in MPa, psi or bar - this unit carries a round psi gauge. Thread is G (BSPP) here; PT is the standard and G/NPT are order options, so confirm the mating thread before ordering. A mounting bracket is not fitted on this code (J), so plan the mounting accordingly.
Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before you order.
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 GFR400 series as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Send us your application details and we will confirm the sizing from the datasheet curves on request before you order.
The code suffix C2 specifies an external round gauge scaled in psi, fitted so downstream pressure can be read directly; the embedded square gauge is the standard alternative and MPa or bar scales are also available. The J in the code means no mounting bracket is supplied, so plan to mount the unit on the piping or add a bracket order option.
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.