The AirTAC GFR300C08LJF3T AirTAC Filter Regulator NPT1/4 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 AirTAC GFR300C08LJF3T is a size-300 GFR filter regulator: water and particulate filtration plus pressure regulation combined in a single body, fitted here with 1/4 in NPT ports. This configuration carries the standard 40 um filter element, a differential-pressure drain on the bowl, and the low-pressure regulator type, with an embedded square gauge reading in bar. The polycarbonate bowl suits the 300 frame, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is included with this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in. Across the series you can order a 5 um element (code W), automatic or manual drains, gauge scales in MPa, psi or bar, G (BSPP) or NPT threads in place of the PT standard, and brackets where needed. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C08LJF3T AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| 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 and regulates the air to a light-duty clamping fixture that must hold at reduced pressure, with the 40 um element keeping seal wear from airborne dirt and water out of the clamp cylinders.
Sits at the drop into a packaging line's low-pressure actuation section, filtering condensate and particles from the shop air and holding a steady reduced pressure to the diverters and hold-downs.
Prepares the supply to a small pick-and-place module that runs best at reduced pressure, combining filtration and regulation in one body to save panel space at the machine's air inlet.
Choose the size by the port and flow step you need: this unit is size 300 with 1/4 in NPT ports; larger sizes (400, 600) move up to 3/4 and 1 in for higher flow. This code is the low-pressure regulator type, so pick it when your circuit works at reduced pressures rather than the full standard range - the exact adjustment span for the low-pressure type is not published, so confirm it with us. The 40 um element is the standard grade; order the W variant if you need 5 um. Drain is differential-pressure here; automatic (A) and manual (M) drains are order options. The gauge is the embedded square type reading bar; MPa and psi scales and an external round gauge are available. Threads come as PT as standard, with G (BSPP) and NPT as order options, and brackets can be added where this no-bracket code does not suit the mounting. Because flow is published as curves and not a single rating, 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 rated flow figure. Send us your line pressure, downstream pressure and expected air demand, and we will confirm the sizing from the datasheet curves on request before you order.
The L code marks the low-pressure regulator variant, intended for circuits that operate at reduced pressures rather than the full standard adjustment range. The exact adjustment span for the low-pressure type is not published in the material we hold, so confirm the range with us against your working pressure before ordering.
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.