The AirTAC AirTAC GFR300C10MLJF2 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 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 GFR300C10MLJF2 is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration decodes as a PT3/8 (3/8 in) port with PT thread, a manual-drain bowl, the standard 40 um filter element, the low-pressure regulator type, an embedded square gauge reading in psi, and no reverse/check valve or mounting bracket. 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 family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (code W) filtration, square or external round gauges with MPa, psi or bar scales, and G or NPT thread options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | AirTAC GFR300C10MLJF2 Filter Regulator PT3/8 Low-Pressure |
|---|---|
| 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) |
Filtered, regulated air for the clamp cylinders on a machining or welding fixture, where the clamp pressure is set once at the unit and the manual-drain bowl is purged during shift start-up checks.
Point-of-use conditioning ahead of the cylinders and air grippers on a carton-forming packaging station, catching water and pipe scale before they reach the directional valves downstream.
Conditioning shop air feeding a laboratory pneumatic test bench: 40 um filtration for particulate, a manual drain for end-of-day bowl purging, and a psi gauge that matches the bench's imperial instruments.
Size and port step up together: 200, 300, 400 and 600 map to ports from 1/8 in to 1 in, so choose the port that matches your line and let us check the flow curve against your air consumption. Drain type is a real decision: manual (this unit) needs periodic bowl purging, while automatic and differential-pressure drains look after themselves. The 40 um element is standard; specify W for 5 um where finer filtration matters. The gauge here is the embedded square type reading in psi, with MPa and bar scales as alternatives and an external round gauge optional. Thread is PT as standard, with G (BSPP) and NPT as order options, and this unit carries no mounting bracket (code J). Because this is the low-pressure (L) type and its exact regulation range is not published, confirm your set pressure with us before ordering if it is critical to the circuit.
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 GFR300 flow as curves, not as a single rated number, so we do not quote a figure here. Send us your working pressure and air consumption and we will confirm the flow from the datasheet for this exact PT3/8 unit before you order.
This is the L (low-pressure) type of the GFR300 series, and its exact regulation range is not published in the data we use, so we do not quote one. Standard-type GFR units with a manual drain regulate 0.05-0.9 MPa (7-130 psi). Tell us your set pressure and we will confirm on request whether this low-pressure type matches.
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.