The AirTAC GFR30010LJC2K AirTAC Filter Regulator PT3/8 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 GFR30010LJC2K is a GFR300 filter regulator: filtration and pressure regulation combined in one body, with a 3/8 in PT threaded port. This configuration is the low-pressure type with a differential-pressure drain, a 40 um standard filter element, a polycarbonate bowl, an external round gauge scaled in psi, and a built-in reverse (check) valve; it is supplied without a mounting bracket. The check valve holds downstream pressure when the upstream supply is removed, and the differential-pressure drain bleeds condensate automatically as flow passes through the unit. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G or NPT threads, plus drain, filter grade, gauge and bracket options. Flow figures for this series are published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request before you order.
| Model | GFR30010LJC2K AirTAC Filter Regulator PT3/8 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Mounted at the air inlet of a cartoning or wrapping machine, this filter regulator cleans the shop air of water and particulate and holds a stable low supply pressure to the machine's pneumatic actuators, with the psi gauge giving the operator a direct reading at the panel.
Installed ahead of the clamping cylinders on a milling or drilling fixture, the unit filters incoming compressed air and regulates it to the low setting the clamp circuit requires, while the check valve holds the clamp circuit's pressure if the main supply is shut off.
Fitted on the air supply to a small pick-and-place handling station, the filter regulator conditions the air feeding the gripper and cylinder valves, protecting them from condensate and debris and keeping the operating pressure steady through the shift.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a PT3/8 (3/8 in) port, one step up from the 1/4 in size-300 option and below the 1/2 in size-400 units. Drain type is a real choice: differential-pressure (this unit) needs no operator attention, an automatic drain (code A) dumps collected condensate, and a manual drain (code M) is emptied by hand. Filter grade is 40 um standard (this unit) or 5 um with code W where finer particulate removal is needed. Gauge options are the embedded square gauge or an external round gauge (this unit, psi scale; MPa and bar scales are also available). Thread is PT as standard with G and NPT as order options, and a bracket can be added if this no-bracket configuration needs panel fixing. Flow for this series is published as curves, not a single rating, so 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. The reflux valve permits reverse flow 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 rated flow, Cv or SCFM number. Send us your line pressure, downstream pressure setting and air demand, and we will confirm the sizing from the datasheet on request before you order.
The K code in GFR30010LJC2K means a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply is removed. The drain is the differential-pressure type (no drain letter in the code), which vents collected condensate automatically as air flows through the unit, with no manual draining needed. The unit is the low-pressure type (L) and is supplied without a mounting bracket (J).
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.