The AirTAC GFR300C08ALC3T 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 GFR300C08ALC3T is an AirTAC GFR-series filter regulator: a water-and-particulate filter and a pressure regulator combined in one body, size 300, with a 1/4 in NPT port. This configuration carries a 40 um filter element, an automatic drain that expels collected condensate without manual intervention, a low-pressure type regulator, and a round pressure gauge reading in bar. A mounting bracket is included, the bowl is metal, 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 GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the range include manual or differential-pressure drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, a reverse/check valve, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C08ALC3T 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) |
Filtered, regulated air to grippers and small actuation cylinders on a robotic assembly cell: the 40 um element strips water and particulate ahead of the valves, and the round bar gauge lets a technician verify the set pressure at the manifold at a glance.
Point-of-use air preparation for cylinder-driven diverters and clampers on a bottling or packaging conveyor. The automatic drain bleeds condensate from the bowl on its own, so lines running long shifts do not depend on an operator remembering to drain it.
Holding workpieces in welding jigs or soft-grip fixtures where the circuit is meant to run at a reduced set pressure rather than full line pressure. This is the low-pressure type; confirm the set pressure you need with us before ordering.
Choose the size by port and flow: sizes 200 through 600 step up in port from 1/8 to 1 in, and this size 300 unit takes a 1/4 in NPT port (PT is the standard thread; G and NPT are order options). Drain comes as differential-pressure (the default), automatic, as fitted here, or manual; the element is 40 um standard with a 5 um W option; an embedded square gauge is standard with an external round gauge optional in MPa, psi or bar scales. This is the low-pressure type, and its exact regulation range is not published in the catalogue, so confirm the set pressure you need with us. 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 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your flow and upstream pressure and we will confirm the sizing for this unit from the datasheet on request.
The automatic drain on this unit expels collected condensate by itself, which suits installations that run unattended or across long shifts. The GFR family is also available with a manual drain or with the differential-pressure default drain; tell us which suits your maintenance routine and we will identify the matching code.
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.