The AirTAC AirTAC GFR30010LJC2WGK Filter Regulator G3/8 5 um is a genuine G-series filter regulator: water separation, 5 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 GFR30010LJC2WGK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This 300-size unit is configured with a G3/8 (BSPP) port, a 5 um filter element (code W) for finer air cleaning than the standard 40 um grade, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. It is the low-pressure type (code L), fitted with a round pressure gauge reading in psi (code C2) and a reverse/check valve (code K), and it ships without a mounting bracket (code J). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and each size can be ordered with your choice of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT as order options), bracket and reverse valve. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm the flow and full datasheet figures for your application on request.
| Model | AirTAC GFR30010LJC2WGK Filter Regulator G3/8 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a machining cell where fixtures and swing clamps run at reduced pressure, this low-pressure-type filter regulator cleans the supply to 5 um and holds the clamp circuit at the set pressure, with the psi gauge giving the operator a direct reading at the machine.
Carton sealers, labellers and wrap stations use cylinders and air jets that are sensitive to water and fine debris. The 5 um element and differential-pressure drain keep condensate out of the valves, while the regulator sets the gentler pressure these machines need.
Bench analysers, sample-handling actuators and small pneumatic tools at a lab bench often run well below main-header pressure. This unit steps the supply down at the drop, filters it to 5 um, and the check valve helps hold the set circuit if the upstream supply dips.
Start with the port and size: this unit is 300 size with a G3/8 port, one step up from 1/4 in the G-series ladder - step up or down a size if your line ports or expected air demand differ. The 5 um element (W) suits downstream equipment that needs cleaner air than the standard 40 um grade; the trade-off is a finer element to keep drained. Drain type is a real choice: differential-pressure (this unit, automatic in normal use), fully automatic (A), or manual (M) where you want to drain on a schedule. Gauge options are embedded square or external round, in MPa, psi or bar scales - this unit carries a round psi gauge. Thread is G (BSPP) here; PT is the standard thread and G or NPT are catalogue options to order. Brackets are optional (this unit has none) and the K code adds a reverse/check valve. For sizing, note that flow is published as curves, not a single rating - ask us to confirm the flow figure 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 number that could mislead your sizing. Tell us your inlet pressure, set pressure and expected air demand and we will confirm the flow from the datasheet for this exact 300-size, G3/8 configuration before you order.
The W code orders the 5 um element instead of the 40 um standard grade, for finer removal of water and particulate ahead of sensitive equipment. The blank drain position is the differential-pressure type, which discharges collected condensate automatically when the pressure differential across the element rises - no manual draining in normal operation, though manual (M) and automatic (A) drains are order options if you prefer them.
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.