The AirTAC GFR300C08ALC2G AirTAC Filter Regulator G1/4 Auto Drain 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 GFR300C08ALC2G is an AirTAC GFR filter regulator: a unit that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is size 300 with a 1/4 in G (BSPP) port, an automatic drain that ejects collected condensate without anyone having to operate it, the standard 40 um filter element, and the low-pressure regulator type. It carries the round external pressure gauge set to a psi scale, includes a mounting bracket, and has no reverse (check) valve fitted.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature is -5 to 70 C (non-freezing), and the size 300 bowl is polycarbonate. The exact adjustment range of the low-pressure type is not published in the material we hold, so we confirm it on request; flow is likewise published as curves rather than a single rating, and we will confirm figures from the datasheet for your application.
| Model | GFR300C08ALC2G AirTAC Filter Regulator G1/4 Auto Drain |
|---|---|
| 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 and regulated air for the cylinder-driven capping, filling and reject stations on a beverage bottling line, with the automatic drain handling condensate at an out-of-the-way drop.
Supplying low-pressure regulated air to pneumatic clamps and swing cylinders on a machining cell, where the psi-scale gauge lets the setter read clamp pressure directly.
Regulated air to diverters, stoppers and pusher cylinders on a distribution conveyor, with 40 um filtration protecting the solenoid valves that pilot them.
Pick the size and port against the air consumption of the circuit: this unit is size 300 with a 1/4 in G thread, and larger sizes in the range carry larger ports and more flow. Drain type is a real choice - automatic (as here) suits drops that are rarely visited, manual gives deliberate control, and the differential-pressure default drains as the element loads up. Filter grade is 40 um standard or 5 um with code W; gauge scale is MPa, psi or bar; thread is PT as standard with G and NPT as order options; a bracket is included on this unit. Because flow is published as curves and not as a single rated figure, send us your consumption and line pressure 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure and air consumption and we will confirm the sizing from the datasheet on request.
The automatic drain fitted to this unit ejects collected condensate by itself, which suits installation points that are rarely visited. A manual drain discharges only when operated, and the differential-pressure default drains as the element loads. All three are catalogue choices across the GFR range, and the drain code in the model tells you which one is fitted.
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.