The AirTAC AirTAC GFR300C10MLJF2WG Filter Regulator 3/8in G Thread 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 See datasheet 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 GFR300C10MLJF2WG is a GFR-series filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration is the 300 size with a 3/8in G (BSPP) port, a 5 um filter element (the W grade, finer than the 40 um standard), a manual drain, the low-pressure regulator type, an embedded square gauge reading in psi, no reverse/check valve, no mounting bracket, and an operating range of -5 to 70 C (non-freezing).
It is a genuine AirTAC part from the GFR range, which spans 200, 300, 400 and 600 sizes with manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge scale choices and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | AirTAC GFR300C10MLJF2WG Filter Regulator 3/8in G Thread |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding pneumatic clamps and air tools on a machining centre, where the low-pressure regulator holds a steady supply pressure and the 5 um element keeps sludge and scale out of the valve stack.
Supplying cylinders and air-driven grippers on a packaging conveyor, with the manual-drain bowl emptied during scheduled changeovers and the psi gauge giving operators a local pressure readout.
Conditioning shop air for laboratory analysers or sample-handling pneumatics that need finer-than-standard 5 um filtration and a stable, low regulated pressure at the instrument.
The real choices in this family are the size and port step (200 through 600, matched to the flow your line needs), the drain (manual, as here, or automatic or differential-pressure), the filter grade (40 um standard or 5 um with the W code), the gauge and its scale (MPa, psi or bar), the thread (PT standard, with G and NPT as order options) and whether a bracket is fitted. This unit already fixes those choices at 300 size, 3/8in G, 5 um, manual drain, psi square gauge and no bracket. Because rated flow is published only as curves, not a single figure, 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. 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 GFR300 as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Send us your line pressure and air demand and we will confirm the sizing from the datasheet on request.
The M code in this model means the bowl is drained by hand at intervals, which suits attended machines with scheduled maintenance. Automatic and differential-pressure drains are catalogue options on the GFR family if you would rather not rely on manual draining.
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.