The AirTAC GFR30008ALC2T AirTAC Filter Regulator NPT1/4, 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 GFR30008ALC2T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration has a 1/4 in NPT port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element in a polycarbonate bowl, and a round pressure gauge reading in psi. It is the low-pressure type, intended for circuits that run below the standard adjustment span, and is rated to 1.0 MPa (145 psi) inlet.
This is a genuine AirTAC part. The GFR series comes in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT as standard and G or NPT to order, with manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge and scale choices, and bracket options. Operating range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30008ALC2T AirTAC Filter Regulator NPT1/4, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT 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. |
| T | NPT 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) |
Filtered, regulated air at modest pressure keeps atomising air and gun actuation steady on spray booths and coating heads, with the automatic drain clearing condensate between shifts.
Low-pressure clamp and hold-down cylinders on cartoning and wrapping machines get clean air and a stable set pressure from one compact 1/4 in body.
Gate, divert and reject actuators on filling and conveying lines run on filtered, regulated air, with the psi gauge giving operators a visible setpoint at the machine.
Size 300 with a 1/4 in NPT port sits in the mid range of the family; step up to size 400 or 600 for larger ports and flow, or down to 200 for compact circuits - match against the flow curve, not a guess. The automatic drain on this unit suits unattended duty; choose manual where you want controlled blow-down, or differential-pressure where the bowl drains on a pressure drop. Filtration is the 40 um standard element; specify W for 5 um when downstream equipment needs finer protection. The round psi gauge is fitted; MPa or bar scales and the embedded square gauge are alternatives. NPT is an order option on this series (PT is standard), and the mounting bracket is included. Because flow is published as curves rather than one rated figure, send us your demand and we will confirm sizing 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 G-series flow as curves rather than a single rated figure, so no one number is honest to quote. Send us your line pressure and downstream demand and we will confirm the sizing from the datasheet before you order.
The L code makes this a low-pressure regulator for circuits that run below the standard adjustment span; the exact range is not published, so confirm it with us. The A code fits an automatic drain that expels collected condensate on its own, so no manual blow-down is needed.
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.