The AirTAC GFR300-10LJC2T AirTAC Filter Regulator NPT3/8 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 PT3/8" 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 GFR300-10LJC2T is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/8 in NPT port, the standard 40 um filter element, a differential-pressure drain in the PC (polycarbonate) bowl, a round pressure gauge reading in psi, and no mounting bracket. It is the low-pressure (L) type, intended for circuits that run below standard line pressure; its exact regulation range is not published as a single figure, so ask us to confirm it for your application.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, a 5 um (code W) element option, gauge and scale choices, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request.
| Model | GFR300-10LJC2T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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 — round, 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Filtered, regulated pilot air feeds the clamping cylinders on a fixture plate, where the low-pressure type regulator holds a gentle, consistent clamp force and the 40 um element keeps debris out of the clamp valves.
A single body conditions the air feeding pick-and-place and pusher cylinders on a carton packaging line, with the differential-pressure drain shedding accumulated water during production runs and the psi gauge giving operators a familiar readout.
Positioned ahead of solenoid-piloted process valves on a water-treatment or chemical dosing skid, the unit delivers clean, regulated pilot air at low pressure, with the polycarbonate bowl allowing quick visual checks of condensate level.
Start with the port step: this unit is 300 size with a 3/8 in NPT port; step up to 400 or 600 when the circuit needs a larger port, or down to 200 for compact lines. Choose the drain to match duty: differential-pressure (as fitted here) drains automatically when the pressure drop across the element is enough, automatic drains continuously, and manual drain suits infrequently attended points. The 40 um element is the standard grade; specify 5 um (code W) where finer particulate removal is needed. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit carries the round gauge with a psi scale. Thread is NPT here; PT and G (BSPP) are order options. Brackets are optional - this configuration omits the bracket.
Flow for this series is published as curves, not a single rated number, 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 there is no one rated flow number we can quote. Send us your line pressure, downstream demand and port requirements, and we will confirm the flow from the datasheet and check the sizing against your application before you order.
The differential-pressure drain fitted to this unit's bowl discharges collected condensate automatically when the pressure drop across the 40 um element rises high enough, so it suits lines with steady, regular air demand. If the unit sits on an intermittently used line where the pressure drop rarely builds, choose the automatic drain (code A); if the point is visited regularly and simplicity matters, the manual drain (code M) is the economical choice.
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.