The AirTAC GFR30010LJF2 AirTAC Filter Regulator 3/8 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 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 GFR30010LJF2 is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit has PT3/8 ports, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a polycarbonate bowl. It is the low-pressure (L) type, fitted with an embedded square gauge scaled in psi, and no mounting bracket.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with a choice of ports, drain types, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so we confirm datasheet and sizing figures on request.
| Model | GFR30010LJF2 AirTAC Filter Regulator 3/8 PT, Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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. |
|---|---|
| 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). |
| 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. |
| (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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeds a fixture-clamping or workholding circuit that must run at a reduced setting, with the psi square gauge letting the operator read and set the clamping pressure directly at the machine.
Installed at the drop of a packaging or cartoning machine to clean water and particles out of the plant air supply and hold a stable, lower-than-line pressure to the machine's actuators.
Placed on the air drop feeding conveyor diverters, stoppers and gate cylinders, filtering condensate from the supply and regulating it to the pressure the conveyor controls were set up for.
Choose the size and port step against the air demand of the application: this unit is 300 size with PT3/8 ports. The differential-pressure drain suits lines with steady flow and no need for daily manual draining; a manual (M) or automatic (A) drain variant can be ordered instead. The standard 40 um element covers general pneumatic protection, while the W option gives 5 um for finer service. The embedded square gauge here reads in psi; MPa or bar scales and an external round gauge are alternatives. PT is the standard thread, with G and NPT available as order options; brackets can be added where this no-bracket (J) configuration is not panel-fixed.
Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering. The exact adjustment range of the low-pressure (L) type is not published in the standard table, so request it from us when low-pressure setting limits matter to your circuit.
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, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and sizing from the datasheet on request before you order.
L marks the low-pressure type of regulator, intended for settings below the standard range; its exact adjustment range is not published in the standard table, so ask us to confirm it. The drain is differential-pressure (the blank drain code): condensate collected in the polycarbonate bowl is bled off automatically as air flows through, with no daily manual draining needed.
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.