The AirTAC GFR300C15MLJC2T AirTAC Filter Regulator NPT1/2 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 GFR300C15MLJC2T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built on a 1/2 in NPT port, carries the standard 40 um filter element, and drains by hand through its manual drain. The regulator is the low-pressure type, a round gauge scaled in psi is fitted, no mounting bracket is included, and no reverse (check) valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl is metal.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600, with a choice of port size, thread (PT standard, with G and NPT as order options), drain type, 40 um or 5 um filtration, gauge style and scale, and bracket options. Air flow for this family is published as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR300C15MLJC2T AirTAC Filter Regulator NPT1/2 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 clamping cylinders and swing clamps on a machining fixture, with the low-pressure type regulator set to the lighter clamp pressures the fixture calls for.
Supplying clean, regulated air to the pick-and-place and carton-sealing cylinders on a packaging line, with the manual drain operated as part of the shift-start routine.
A bench supply for leak and pressure test rigs that need filtered air held at low setting pressures, read directly off the fitted round psi gauge.
Size and port step up together across the GFR range: 200, 300, 400 and 600, with ports from 1/8 in to 1 in, so choose the size whose flow curve covers your demand - ask us to check it against the datasheet. Choose the drain: manual (as here, drained by hand), automatic, or the differential-pressure default. Filtration is 40 um standard or 5 um with the W code. For gauges, an embedded square gauge is standard with MPa, psi or bar scales, and an external round gauge (psi on this unit) is optional. Thread is PT as standard with G (BSPP) and NPT as order options - this unit is NPT. Brackets are optional and no bracket is included in this configuration. The regulator here is the low-pressure type; its setting range is not published as a single figure, so we confirm it on request. 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 flow for the GFR family as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the flow from the datasheet for this exact unit before you order.
The L position marks the low-pressure regulator version, intended for circuits that operate at lower setting pressures than the standard type. Its exact setting range is not published as a single figure, so we confirm it from the AirTAC datasheet on request. The rest of the decode is standard: 40 um element, manual drain, round psi gauge, no bracket and no check valve.
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.