The AirTAC AirTAC GFR300C10MLJC2K Filter Regulator 3/8 in PT 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 GFR300C10MLJC2K is an AirTAC GFR-series filter regulator: a 300-size unit that removes water and particulate from compressed air and regulates downstream pressure in one combined body. This configuration has a 3/8 in PT port, the low-pressure regulator type (its exact setting range is not published; we confirm it on request), a manual drain on the bowl, the standard 40 um filter element, a round pressure gauge reading in psi, and a built-in reverse (check) valve. It is supplied without a mounting bracket. The bowl on this 300 size is polycarbonate (a metal bowl is used on the 600 size). Max inlet pressure is 1.0 MPa (145 psi) and working temperature 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 to 1 in, and is available with automatic, manual or differential-pressure drains, a finer 5 um element (code W), an embedded square gauge or an external round gauge in MPa, psi or bar scales, G (BSPP) or NPT threads as order options, and an optional bracket. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | AirTAC GFR300C10MLJC2K Filter Regulator 3/8 in PT |
|---|---|
| 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) |
Cleaning and setting supply pressure at the drop leg feeding the pneumatic actuator group on a bottling line, so grippers and stopper cylinders receive filtered air at a stable low setting.
Conditioning shop air ahead of a small pneumatic press or clamping fixture, where the check valve holds the set circuit and the regulator keeps working pressure at the level the tooling was set up for.
Filtering compressed air feeding blow-off nozzles or dilute-phase air conveying on a packaging or plastics line, where the process runs below standard regulator settings and the low-pressure type is the right match.
Size and port step up together: this unit is size 300 with a 3/8 in PT port, and the larger sizes carry larger ports and more flow capacity. Choose the drain to match service: manual drain (fitted here) needs periodic operator draining, an automatic drain suits unattended duty, and the default differential-pressure drain responds to the pressure drop across the element. The standard element is 40 um; specify code W for 5 um where finer filtration is needed. An embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales - this unit is fitted with a round psi gauge. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket can be added where mounting is required. Flow is published as curves, not a single rating, so please 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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Tell us your application and required port size, and we will confirm the flow curve and sizing from the datasheet on request before you order.
The manual drain means the bowl is drained by hand at intervals as part of routine checks - a good fit where an operator is already servicing the machine. For unattended duty choose the automatic drain, or the default differential-pressure drain that responds to element pressure drop. This unit is rated to 1.0 MPa (145 psi) inlet and -5 to 70 C, non-freezing.
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.