The AirTAC GFR30008LJF2T 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 PT1/4" 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 GFR30008LJF2T is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration has 1/4 in NPT ports, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate as flow passes through, and the low-pressure regulator type for applications set below the standard range. The embedded square gauge fitted to this model reads in psi, the polycarbonate bowl suits the 300 size, the maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C, non-freezing. No mounting bracket and no reverse/check valve are included in this code.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT, G (BSPP) or NPT thread, manual, automatic or differential-pressure drains, an optional 5 um element (code W), and square or external round gauges scaled in MPa, psi or bar. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR30008LJF2T AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT 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 — square, 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". 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). |
| F | Gauge shape: Square. 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. |
| T | NPT 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds the pneumatic clamp cylinders on a carton-sealing or case-packing line where the actuation pressure is set well below normal line pressure. The filter section keeps seal and valve wear down while the low-pressure regulator holds the clamp setting steady.
Mounted at the drop of a robot cell's air supply to condition the air feeding gripper cylinders and small actuators. The 40 um element and condensate drain protect the downstream valves, and the psi square gauge gives the technician a direct setpoint readout.
Supplies filtered, regulated air to blow-off nozzles clearing dust or moisture from products on a food or electronics conveyor, where the low-pressure type lets the operator tune the air down to a level that moves debris without disturbing lightweight product.
Start with the port and size step: this unit is size 300 with 1/4 in NPT ports, and the 200/300/400/600 ladder exists so the port matches the air consumption of the machine downstream - step up a size when the line feeds several consumers. Because flow is published as curves and not a single rating, ask us to confirm the sizing against your application before ordering. For the drain, differential-pressure (this model) suits continuous flow, automatic (code A) suits unattended duty, and manual (code M) suits intermittent use. The 40 um element is standard; specify 5 um (code W) where finer particulate protection is needed. This is the low-pressure type (code L), intended where the regulated setpoint sits below the standard regulator range - the exact range for this type is not published, so confirm it with us. Gauge scale here is psi (code 2); MPa and bar scales are available. Thread is NPT on this code, with PT (standard) and G (BSPP) as order options; brackets are optional (code J omits it).
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 GFR flow as performance curves rather than a single rated figure, so there is no one rated flow number we can honestly quote. Send us your inlet pressure and the air consumption of the equipment downstream, and we will confirm the sizing from the datasheet curves on request before you order.
It is the gauge code: F is the embedded square gauge fitted as standard, and 2 is the psi scale. If you prefer MPa or bar, the square gauge can be ordered with those scales, or an external round gauge can be specified instead. This code also carries L (low-pressure regulator type), J (no mounting bracket), and T (NPT thread); the drain is the differential-pressure default and the element is the standard 40 um grade.
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.