The AirTAC GFR300C15LJC2 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 See datasheet 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 GFR300C15LJC2 is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, all in one body. This configuration is the low-pressure (L) type for circuits that run below standard regulator settings, with a 1/2 in PT port, a 40 um standard filter element, the differential-pressure drain (the default drain type), a round gauge reading in psi, and no mounting bracket (code J).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), a 5 um element option (code W), gauge and scale choices, G or NPT thread options and bracket variants. At size 300 the bowl is polycarbonate (PC). Max inlet pressure is 1.0 MPa (145 psi) and working temperature is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm figures from the datasheet for your application.
| Model | GFR300C15LJC2 AirTAC Filter Regulator 1/2 in PT Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeds filtered, regulated air to clamping cylinders on a CNC fixture line, holding a steady low set pressure so clamps grip consistently through every cycle.
Conditions air ahead of spray guns in a finishing booth, dropping water and debris out of the line while the operator holds a repeatable low-pressure setting.
Supplies clean, regulated air to the sealing cylinders on a bagger or tray sealer, where a low-pressure circuit and steady downstream pressure keep seals uniform.
Step through sizes 200/300/400/600 and ports 1/8 to 1 in to match the flow your line needs - this unit sits at size 300 with a 1/2 in PT port. Choose the drain: differential-pressure (as fitted here), automatic (code A) or manual (code M). The 40 um element is standard; specify W for the 5 um grade where finer filtration matters. On gauges, the embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales - this unit carries a round gauge on the psi scale. Thread is PT as standard, with G (BSPP) and NPT as order options, and the bracket is optional (omitted here, code J). Because flow is published as curves rather than a single rated figure, send us your application and we will confirm sizing from the datasheet 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 GFR300 as curves rather than a single rated figure, so there is no one number we can quote. Send us your application details and we will confirm the flow, together with pressure-loss data, from the datasheet before you order.
L marks the low-pressure type of regulator, intended for circuits that run below the standard GFR setting range. The exact range for the low-pressure version is not published in the catalogue, so confirm it with us against your set pressure. The rest of the code decodes as: 300 = size, 15 = 1/2 in PT port, C2 = round gauge with psi scale, J = 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.