The AirTAC GFR30010MLJC2WGK AirTAC 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30010MLJC2WGK is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for a 3/8 inch (G3/8) port and carries the 5 um filter element (code W) for finer filtration than the 40 um standard. It is the low-pressure type, so it is intended where regulated pressure stays below the standard regulator band. The manual drain lets an operator bleed accumulated condensate from the PC bowl on demand, a round external gauge reading in psi is fitted, and a reverse/check valve is included to hold downstream pressure if the supply drops. The unit ships without a mounting bracket.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port options, thread choices (PT standard, G and NPT to order), drain types and filter grades. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30010MLJC2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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) |
Feeding the clamping cylinders on a machining-centre fixture: the 5 um element keeps spool valves clean while the regulator holds the clamping pressure the fixture was designed for, and the check valve holds clamp force if shop air dips.
Supplying pneumatic actuators on a chemical dosing or water-treatment valve bank that operates at reduced pressure - the low-pressure type regulator tracks the lower setpoint, and the psi gauge gives operators a direct local reading.
Conditioning air on a laboratory test bench or pilot rig: fine 5 um filtration protects instrumentation, the manual drain suits a bench attended by an operator, and the 3/8 inch port serves bench-scale tooling and cylinders.
Size 300 with a G3/8 port is the right step when your line's flow demand sits between the smaller 1/4 inch class and the larger 1/2 inch class - size up if your actuators or cylinders draw more air, size down to save cost if they do not. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering. The 5 um element (code W) suits air that feeds sensitive valves or instruments; choose the 40 um standard grade for general plant air. The manual drain needs a scheduled bleed by an operator, unlike the automatic or differential-pressure options - pick manual only where someone checks the unit regularly. The low-pressure type is for circuits regulated well below standard bands; if you need the full standard range, the non-L GFR300 is the alternative. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are the other catalogue options. Thread here is G (BSPP); PT is the standard and NPT is orderable. No bracket is fitted with this code - order one separately if you panel or surface mount.
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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your inlet pressure, set pressure and the air demand of your equipment, and we will confirm the flow from the datasheet curves on request before you order.
The M in the code selects the manual drain: condensate collected in the PC bowl is released by hand, so the unit suits installations where an operator checks it on a schedule - automatic and differential-pressure drains are the other catalogue options. The L code marks the low-pressure regulator type, intended for circuits regulated below the standard band; the exact range for this type is not published, so ask us to confirm it on request.
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.