The AirTAC GFR30008ALC2G 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 PT1/4" ports, a automatic 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 GFR30008ALC2G is a GFR300-series filter regulator: it removes water and particulate from compressed air and reduces pressure to the working level in a single body. This configuration has G1/4 (BSPP) ports, a 40 um standard filtration grade, an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type for circuits set below standard working pressures. A round external gauge on a psi scale is fitted so the downstream setting can be read directly, and a mounting bracket is included for panel or wall fixing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with a choice of port sizes, G or NPT thread options on request, manual, automatic or differential-pressure drains, a 5 um (code W) filter element, square or round gauges on MPa, psi or bar scales, and an optional reverse/check valve. Flow figures for this family are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30008ALC2G AirTAC Filter Regulator G1/4 Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a bench or cell where pneumatic clamps and swing cylinders hold parts during fitting, this filter regulator cleans the supply, drains condensate automatically and holds a reduced, low-pressure setting suited to light clamping circuits, with the psi gauge giving the setter a direct reading.
On a cartoning or wrapping line, air cylinders and diverters run continuously; this unit filters water and pipe scale out of the shop air, regulates it down to the pressure the machine was set up for, and its automatic drain keeps condensate out of the valves between shifts.
At a lab bench or test station fed from a central compressor, instruments and air-driven apparatus need clean air at a gentle, stable pressure; the low-pressure regulator type, 40 um filtration and automatic drain make this a tidy point-of-use supply, with the bracket fixing it to the bench frame.
Start with the port size: this unit is the 300 size with G1/4 ports, one step up from the 200 size - match the size to the air consumption of the circuit rather than forcing flow through an undersized port. The automatic drain on this model suits unattended duty; choose manual drain where you want controlled blow-down, or the default differential-pressure drain where the bowl empties on a pressure drop. The 40 um element is the standard grade; specify the W code for 5 um when downstream equipment needs finer filtration. The fitted round gauge reads in psi; square gauges and MPa or bar scales are alternatives. PT is the standard thread, with G and NPT available as order options - this unit is specified with G thread. A bracket is included.
Flow for GFR units is published as curves, not a single rated figure, so send us your application's air demand and we will confirm sizing against 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 family as curves rather than a single rated number, so there is no one figure we can quote. Send us your application's air demand and we will confirm the flow and sizing from the datasheet on request before you order.
The A in the code GFR30008ALC2G means the bowl drains collected condensate automatically, which suits unattended or continuous duty. The family also offers manual drain (code M) for controlled blow-down and a differential-pressure drain (blank) as the default; the 300-size bowl is polycarbonate, and the maximum inlet pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C, non-freezing.
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.