The AirTAC GFR300C08MLJC3T 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 AirTAC GFR300C08MLJC3T is a filter regulator: one compact body that removes water and particulate from compressed air and holds the downstream pressure at your set point. This unit is built on the 300 size with a 1/4 in NPT port, uses the standard 40 um filter element, and collects condensate in a metal bowl that is emptied by hand through its manual drain. It is the low-pressure regulator type, and it comes fitted with a round pressure gauge scaled in bar. No mounting bracket is included and no reverse (check) valve is fitted. 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 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, and options that include automatic or manual draining, a finer 5 um element (code W), embedded square or external round gauges with MPa, psi or bar scales, a reverse valve, and G, NPT or PT threads. Flow for this series is published as curves rather than a single rating, so send us your application details and we will confirm the figures from the datasheet on request.
| Model | GFR300C08MLJC3T 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) |
Feeds filtered, regulated air to the directional valves and small cylinders that drive a carton-forming station, with the low-pressure variant suiting stations that run at reduced set points and the bar gauge giving operators a clear set-point reference.
Sits at the drop feeding a machining centre's tool-clamp circuit, stripping water and particulate to 40 um before the clamp valves and holding a steady set point that maintenance can read off the round gauge.
Supplies the diverter cylinders that kick parcels between conveyor lanes, with the manual drain letting the shift technician bleed accumulated water from the bowl during scheduled walk-rounds.
The real choices on a GFR are: size and port (200/300/400/600, ports 1/8 to 1 in) matched to the air your line consumes; drain type - differential-pressure by default, automatic (A) for unattended drops, or manual (M, as here) where an operator bleeds the bowl during routine checks; filter element 40 um standard or 5 um (W) for finer air; gauge - embedded square as standard or an external round gauge with MPa, psi or bar scales (this unit carries the round bar gauge); thread - PT is the standard, with G and NPT as order options; and bracket, which code J deletes (as here). The L in this code also selects the low-pressure regulator variant. Flow is published as curves, not a single rated figure, 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 series as curves, not as a single rated number, so we do not quote a figure here. Send us your inlet pressure and the downstream flow your circuit needs, and we will confirm the sizing from the datasheet on request before you order.
The L selects the low-pressure regulator variant of the GFR300, in place of the standard type. AirTAC does not publish the exact adjustment range for this variant, so tell us the set point your application needs and we will confirm it from the datasheet on request. Everything else on this unit is standard decode: 1/4 in NPT port, 40 um element, manual drain, round bar 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.