The AirTAC GFR300C08MLJF2WT AirTAC Filter Regulator 1/4 NPT 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 GFR300C08MLJF2WT is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one body. This configuration is built on the 300 size with 1/4 in NPT ports, a 5 um filter element (code W), a manual drain bowl, an embedded square gauge scaled in psi, and the low-pressure regulator type. It is supplied without a mounting bracket and without a reverse/check valve.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200, 300, 400, 600) with port options from 1/8 to 1 in and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C08MLJF2WT AirTAC Filter Regulator 1/4 NPT |
|---|---|
| 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 feeding clamp cylinders on a CNC fixture line, where the low-pressure regulator type suits circuits that must not over-clamp delicate or finished workpieces.
Conditioning the air feed to spray guns on a finishing line: the 5 um element strips water and fine particulate that would otherwise blemish the coating, while the regulator holds a steady gun pressure.
A conditioning point ahead of small cylinders and air jets on a carton-sealing or wrapping conveyor, keeping moisture and dirt out of the valves and holding consistent actuator pressure.
Within the GFR series the real choices are: size and port (200/300/400/600 with 1/8 to 1 in ports) stepped against the flow your line needs; drain type (differential-pressure as the default, automatic, or manual as fitted here); filter grade (40 um standard or 5 um with code W, fitted here); gauge scale (MPa, psi or bar - this unit carries an embedded square gauge in psi); thread (PT standard, with G or NPT as order options - this unit is NPT); and bracket (this unit is supplied without one). As a low-pressure type, its adjustment range differs from the standard regulator - we will confirm the exact range from the datasheet. Because flow is published as curves rather than a single rating, send us your flow and pressure requirements and we will confirm the right size before you order.
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 one number. Send us your flow and pressure conditions and we will confirm the sizing from the datasheet before you order.
The M in the code selects the manual drain bowl: collected water is released by opening the drain by hand at intervals, instead of the differential-pressure (default) or automatic drain options. It suits installations where scheduled blow-down fits the maintenance routine. If you prefer hands-off draining, ask for the A (automatic) variant or the default differential-pressure version.
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.