The AirTAC GFR300C08LJF2T AirTAC Filter Regulator NPT1/4 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 GFR300C08LJF2T is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has NPT1/4 ports, a 40 um standard filtration element, and a differential-pressure drain that clears the bowl automatically when airflow creates a pressure differential, so no manual blows-down is needed in normal running. It is the low-pressure (L) regulator type, carries an embedded square gauge reading in psi, is supplied without a mounting bracket, and has no reverse/check valve fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the medium is compressed air only.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including manual or automatic drains, a 5 um (W) element, G (BSPP) or NPT threads in place of the PT standard, gauges in MPa, psi or bar scales, and a mounting bracket. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure on request.
| Model | GFR300C08LJF2T AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Filter and regulate the air feeding paint spray guns in a finishing booth, keeping moisture and grit out of the finish while holding a steady, lower gun pressure.
Supply filtered, regulated air to the stop-and-gate cylinders on a bottling conveyor, where the low-pressure regulator type suits light gating and clamping duties.
Trim the supply to small gripper and cylinder circuits on an assembly bench, with the psi-scale square gauge giving the operator a direct pressure readout at the set-point.
The real choices in this family are all decodable from the code. Step through sizes 200, 300, 400 and 600 (ports 1/8 to 1 inch) to match the air demand of your line - we can check the published flow curves against your application. Choose the drain: differential-pressure (this unit), automatic (A) for unattended condensate removal, or manual (M) where you want controlled blows-down. Filtration is 40 um standard, or 5 um with code W for finer protection of sensitive tools. The embedded square gauge is standard with MPa, psi or bar scales (this unit reads psi); an external round gauge is optional. Threads: PT is the catalogue standard, with G (BSPP) and NPT as order options - this unit is NPT. A mounting bracket is optional, and this unit comes without one. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering.
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 number here. Tell us your inlet pressure, downstream demand and port size, and we will confirm the flow and the full datasheet figures for GFR300C08LJF2T on request.
L marks the low-pressure regulator type: this unit regulates to lower set-points than the standard GFR300 configuration. The exact adjustable range for the low-pressure variant is not published in our data, so ask us to confirm it against your set-point before ordering. Everything else decodes normally: NPT1/4 ports, 40 um element, differential-pressure drain, square psi gauge, no bracket and no check valve.
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.