The AirTAC GFR300C08MLJF2T AirTAC Filter Regulator NPT1/4 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 GFR300C08MLJF2T is an AirTAC GFR300 filter regulator: a 300-size unit that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/4 in NPT port, a manual drain, the standard 40 um filter element, the low-pressure regulator type, an embedded square gauge reading in psi, no reverse/check valve and no mounting bracket. The bowl is metal, maximum inlet pressure is 1.0 MPa (145 psi), and the operating 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 a choice of ports, drain types (manual, automatic or differential-pressure), an optional 5 um element (code W), gauge scales in MPa, psi or bar, and G or NPT thread options. Because AirTAC publishes flow only as curves rather than a single rating, we confirm flow and datasheet figures for your application on request.
| Model | GFR300C08MLJF2T AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Filtered, regulated air at reduced pressure for pneumatic clamps on a machining fixture, with the psi-scale square gauge giving a direct readout while the operator sets the clamping force.
Point-of-use air conditioning for a lab or pilot-scale test skid that runs at low regulated pressure; the 40 um element protects sensitive instruments and the manual drain clears collected water at the end of a session.
Supplying a low-pressure air knife or blow-off nozzle on a packaging conveyor, where the regulator sets a gentle, repeatable pressure and the manual drain is emptied during scheduled line cleaning.
The real choices on this family are the size and port step, the drain type, the filter grade, the gauge and its scale, the thread and the bracket. This code is a 300-size unit on a 1/4 in NPT port with a manual drain and the standard 40 um element; the low-pressure regulator type suits duty at reduced regulated pressure, and its exact range is not published, so confirm it with us. If your line needs finer filtration, the W code gives a 5 um element; if you prefer hands-off water removal, automatic or differential-pressure drain codes exist. Gauge scales can be ordered in MPa, psi or bar, and G (BSPP) or NPT threads are catalogue options alongside the PT standard.
Flow is published as curves, not a single rating, so 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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for this exact model on request.
The M code in GFR300C08MLJF2T specifies a manual drain: collected water is released from the metal bowl by hand, so plan a routine check. Automatic and differential-pressure drain options are available on other codes in this family if you would rather not drain manually.
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.