The AirTAC GFR300C08ALC2T AirTAC Filter Regulator NPT1/4 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 GFR300C08ALC2T is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air through a 40 um element and regulates downstream pressure. This size 300 configuration has NPT1/4 ports, an automatic drain that ejects collected condensate from the polycarbonate (PC) bowl without anyone opening it, and an external round gauge reading in psi. It is the low-pressure (L) type for circuits that run below the standard regulator band, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). Mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, PT as the standard thread and G or NPT as catalogue options, plus a choice of automatic, manual or differential-pressure drains, 40 um standard or 5 um (W) filtration, and gauge styles and scales. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C08ALC2T AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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) |
Conditioning air at a carton-sealing or wrapping machine: the 40 um element strips water and pipe scale before the low-pressure regulator feeds seal and clamp cylinders that run on a reduced-pressure circuit, with the psi gauge giving the setter a visible setpoint.
Filtering and regulating the air feeding a low-pressure spray or coating gun circuit in a finishing booth. The automatic drain keeps condensate out of the finish during long runs, so no one has to crack the bowl open mid-shift.
Supplying filtered, reduced-pressure air to gate diverters and stopper cylinders on a sorting or assembly conveyor line, where the low-pressure type matches gentle actuation duties and the round psi gauge lets operators check the setting at a glance.
This configuration is fixed by the code: size 300 with NPT1/4 threads, automatic drain, 40 um standard filtration, low-pressure regulation, round gauge on the psi scale, bracket included. If your circuit instead runs at conventional shop-air pressures, the standard GFR type (without the L) covers a published 0.15-0.9 MPa (20-130 psi) adjustment band with automatic drain; the low-pressure variant on this model serves circuits below that band, and we confirm its exact adjustment range on request. Thread is a decodable choice too: PT is the AirTAC standard, with G (BSPP) and NPT ordered as options - this unit is the NPT version. Filter grade can be stepped from 40 um to 5 um with the W code where finer particulate capture matters.
On sizing: step up a size (300 to 400, and so on) when the port or the air demand of the circuit grows, since larger sizes carry larger ports and more flow. Because AirTAC publishes flow only as curves and not as a single rated number, ask us to confirm the sizing of this unit against your line pressure and required flow 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 rated flow, Cv, l/min or SCFM for this unit. Send us your line pressure, port size and required flow, and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code fits the automatic drain, which ejects collected condensate from the bowl on its own - useful on lines that run unattended or in humid conditions. The GFR family also offers a manual drain (code M) and a differential-pressure drain (blank) as catalogue options, so you can order the drain regime that matches how your line is maintained.
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.