The AirTAC GFR300C15LJF2G 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 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 AirTAC GFR300C15LJF2G is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 300-size unit is fitted with G1/2 ports, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and an embedded square gauge reading in psi. It is the low-pressure (L) type regulator, is supplied without a mounting bracket, and has no reverse/check valve fitted. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in. Across the family you can order automatic, manual or differential-pressure drains, a 5 um (W) element instead of the 40 um standard, gauge or no-gauge variants, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR300C15LJF2G AirTAC Filter Regulator G1/2 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) |
Feeding filtered, regulated air to a low-pressure pneumatic press or clamping fixture, where the 40 um element protects valves and cylinders from water and swarf carryover and the psi gauge gives operators a local pressure readout at the cell.
Conditioning the air branch that drives packaging-machine conveyors, diverters and bagger actuators, with the differential-pressure drain keeping condensate off the downstream directional valves during continuous shifts.
Stepping a plant air main down to a lower working pressure for a low-pressure utility circuit - blow-off stations, air tables or actuated dampers - where the low-pressure type regulator and G1/2 port suit a higher-flow branch line.
Size the unit by the port and flow step: 200, 300, 400 and 600 move up through port sizes from 1/8 in to 1 in, so match the size to the air demand of the circuit rather than to the existing pipe thread alone. Where a drain is offered, choose differential-pressure (default, self-bleeding with flow), automatic (A) or manual (M); the filter element is 40 um as standard or 5 um with the W code when finer particulate control is needed. Gauge options are the embedded square gauge (this unit: psi scale) or an external round gauge, with MPa, psi or bar scales; threads can be ordered in PT (standard), G or NPT, and a bracket can be added where the J (no bracket) code does not suit the mounting. Flow for this family is published as curves, not a single rating, so send us your application details 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. 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 GFR series as curves rather than a single rated figure, so we do not quote a Cv, l/min or SCFM number. Send us your application details and we will confirm the flow and sizing figures from the datasheet on request before you order.
L marks the low-pressure type of regulator in this GFR300 unit; the exact regulation range for the low-pressure variant is not published, so we confirm it on request. This configuration also carries a differential-pressure drain (condensate bleeds out as air flows through) and an embedded square gauge reading in psi, with an external round gauge and MPa or bar scales available as options.
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.