The AirTAC GFR30010LJC2GK AirTAC Filter Regulator G3/8 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 GFR30010LJC2GK is a GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body, for compressed air only. This 300-size unit is built around a G3/8 (BSPP parallel) port with G thread, in the low-pressure regulator type. It carries the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, and a reverse/check valve that holds downstream pressure if the upstream supply is lost. The round external pressure gauge fitted to this code reads in psi. The polycarbonate bowl suits the 300 size, and this configuration is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element alternative, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Rated flow for this series is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30010LJC2GK AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (G (BSPP) 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. |
| G | G (BSPP) 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) |
Workholding clamps that must seat gently call for a reduced, stable supply pressure. This low-pressure-type filter regulator cleans the shop air and holds the reduced setting downstream, while the check valve keeps the clamps from venting if the main supply drops.
Carton-forming and sealing cylinders run best on clean, regulated air. The 40 um element strips water and pipe scale ahead of the regulator, the differential-pressure drain handles condensate without operator attention, and the psi gauge lets line staff verify set pressure at a glance.
Pneumatic valve positioners and pilot actuators need filtered air at a controlled pressure. This unit filters and regulates in one body, the check valve holds the pilot circuit under supply dips, and the G3/8 port matches typical pilot-line tubing on the skid.
Start with the size and port: the 300 size with its 3/8 in port sits mid-range in the GFR line, so step up to 400 or 600 for larger air demand and down to 200 for compact circuits - match the port step to the flow your line needs. This code is the low-pressure regulator type; the exact adjustment range for the low-pressure variant is not published in our extract, so confirm it with us against your set pressure before ordering. Drain choice matters: the differential-pressure drain fitted here needs no attention and no wiring, while automatic (code A) and manual (code M) versions are orderable. If finer filtration is needed, the 5 um W element is the alternative to the standard 40 um. Gauge scale, thread (PT standard, G or NPT to order) and bracket inclusion are all selectable. Flow for this series is published as curves, not a single rating - send us your application and we will confirm sizing from the datasheet before you order.
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 characteristic curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your line pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves before you order.
The L code marks the low-pressure regulator variant, for circuits set below the span of the standard type. The exact adjustment range of this low-pressure variant is not published in our extract, so we confirm it from the datasheet on request. The unit also differs from the standard type here by carrying a round external psi gauge and a fitted reverse/check valve (code K).
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.