The AirTAC GFR30015LJC2GK 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 GFR30015LJC2GK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air at the standard 40 um grade, then regulates downstream pressure, with the low-pressure regulator type for circuits that run below standard regulator settings. This configuration has a G1/2 (BSPP) port, a differential-pressure drain that bleeds collected condensate whenever the pressure differential across the element is high enough, a round pressure gauge reading in psi, and a built-in reverse (check) valve that holds 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 is offered in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard; G and NPT to order), drain types, filter grades and gauge options, so a matching unit can be specified for most lines. Because flow is published as curves rather than a single rating, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR30015LJC2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR300 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 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 | GFR300 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
A low-pressure clamping circuit on a CNC fixture needs clean air held at a gentle, stable setting so workpieces are secured without crushing. This unit filters the shop air to 40 um and regulates it in one body, and the check valve keeps the clamp holding if the main supply drops.
Bench-top spray and coating rigs are sensitive to both dirt and pressure drift. Feeding the rig through this filter regulator strips water and particulate at 40 um, holds a low regulated setting suited to the applicator, and the psi gauge gives the operator a direct reading.
Low-pressure cylinders on a carton-forming or tray-packing station need filtered air regulated below normal line settings. This unit conditions the supply at the machine inlet, the differential-pressure drain keeps condensate moving out during production, and the check valve prevents cylinders from shifting during a supply interruption.
Start with the size and port: 300 sits in the middle of the GFR range (200/300/400/600), and the G1/2 port here is the BSPP thread option - PT is the standard thread, with G and NPT available to order, so match it to your existing fittings. Choose the drain: differential-pressure (this unit) drains automatically with flow, while automatic drains continuously and manual drains need a routine bleed. Choose the filter grade: 40 um is standard and suits general actuation; specify 5 um (code W) where finer protection is needed. The gauge here is the external round type reading psi; an embedded square gauge with MPa/psi/bar scales is the catalogue alternative. A J code means no bracket is supplied - add one if the unit will be panel-mounted rather than carried on the line. Note this is the low-pressure regulator type; its exact adjustment range is not published in the sheet we work from, so ask us to confirm it before ordering. Finally, flow is published as curves, not a single rated figure - send us your flow and pressure requirements and we will confirm sizing against the datasheet 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 series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your required flow and working pressure and we will confirm the sizing against the datasheet on request before you order.
The C2 in the code specifies the external round gauge with a psi scale (an embedded square gauge with MPa/psi/bar scales is the catalogue alternative), and the K specifies a built-in reverse/check valve that holds downstream pressure if the upstream supply is lost. The J in the code means no mounting bracket is included, and the G gives a G (BSPP) port - PT is the standard thread, with G and NPT available to order.
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.