The AirTAC GFR300C08LJC2WT AirTAC Filter Regulator NPT1/4 5 um 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 GFR300C08LJC2WT is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in one body with a drain bowl. This unit is built on the GFR300 size with 1/4 in NPT ports, a 5 um filter element (code W), a differential-pressure drain on a metal bowl, and the low-pressure regulator type (code L). It is fitted with an external round gauge reading in psi, has no mounting bracket (code J), and no reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR300 size sits in the G-series ladder of 200/300/400/600 bodies with ports from 1/8 to 1 in, and the family can be specified with manual or automatic drains, the 40 um standard element, embedded square or external round gauges in MPa, psi or bar scales, PT, G or NPT threads, and with or without a bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08LJC2WT AirTAC Filter Regulator NPT1/4 5 um |
|---|---|
| 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) |
On a machine-shop air drop feeding a small pneumatic press or clamping fixture, this unit filters the supply to 5 um and holds a regulated pressure to the cylinder valves in one compact body.
Feeding the directional valves and air cylinders of a packaging line, the 5 um element keeps moisture and fine particles out of sensitive spool valves while the regulator holds a steady working pressure.
On a coating or laboratory process line that runs below standard regulator setpoints, the low-pressure type (L) provides regulation at reduced pressures - confirm the exact range with us from the datasheet.
When choosing within GFR300, the port size is the main step: 1/4 in NPT here, one position in the 200/300/400/600 ladder that scales port and body with the air demand. Drain choice matters: this unit uses the differential-pressure drain (the default), while automatic (A) and manual (M) versions are available. The 5 um element (W) is the finer option against the 40 um standard - pick it where downstream valves and instruments are sensitive. The gauge here is an external round gauge with a psi scale; embedded square gauges and MPa or bar scales are alternatives, and PT, G or NPT threads can be specified. This unit has no mounting bracket (J). The L code marks the low-pressure regulator type; its exact setting range is not published in the catalogue, so confirm it with us if your setpoint is critical. Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing from the datasheet 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 GFR300 as curves rather than a single rated figure, so there is no one number we can quote. Send us your application details and we will confirm the flow figures from the datasheet before you order.
L marks the low-pressure regulator type. This unit regulates at reduced setpoints, but the exact setting range for the low-pressure type is not published in the catalogue, so ask us to confirm it against your required pressure. The rest of the code decodes as NPT1/4 ports, a 5 um element, a differential-pressure drain, a round psi gauge, and no mounting bracket.
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.