The AirTAC GFR30008ALF2T 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 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 GFR30008ALF2T is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body, with no lubricator. It filters compressed air to 40 um (removing water and particulate) and regulates downstream pressure, and this unit is the low-pressure type, so it is intended for circuits that run at reduced working pressure rather than full line pressure. The 08 port code gives 1/4 in NPT threads, the A code gives an automatic drain that ejects collected condensate without manual attention, the F2 code gives the embedded square gauge scaled in psi, and the bracket is included for panel or surface mounting.
This is a genuine AirTAC part from the GFR300 series. The GFR family spans sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, differential-pressure, automatic or manual drains, a 5 um (code W) filter element option, gauge scale options and a low-pressure type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30008ALF2T AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| 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 — square, 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). |
| F | Gauge shape: Square. 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) |
A bench-mounted pneumatic press or clamping fixture running at reduced working pressure takes filtered, regulated air from this unit: the 40 um element keeps water and swarf out of the cylinder valves, the low-pressure regulator holds the pressing force consistent, and the psi gauge lets the operator verify setpoint at a glance.
A carton-sealing or wrapping machine with solenoid valves and small actuators needs clean, steady air at moderate pressure. This filter regulator conditions the supply ahead of the machine's valve manifold, the automatic drain handles condensate overnight without operator intervention, and the included bracket fixes the unit to the machine frame.
A lab test rig or pilot-scale process skid that runs instruments and small air cylinders at low working pressure uses this low-pressure-type filter regulator to condition the bench air supply, with the psi-scaled square gauge giving a direct local readout and the 1/4 in NPT ports matching standard lab tubing fittings.
Start with the port step: the GFR300 size with 1/4 in NPT ports is the middle of the GFR range (200/300/400/600), so step up to GFR400 or GFR600 if your line's flow demand points higher - we will confirm the flow curves against your consumption before you order. This unit is already configured with the automatic drain (no daily manual draining), the standard 40 um element (choose the W code for 5 um where downstream equipment needs finer filtration), the low-pressure regulator type, and the square gauge scaled in psi (MPa and bar scales are available on other codes). Thread is NPT here; PT is the catalogue standard and G (BSPP) is also an order option. A J code variant drops the bracket if you do not need one.
Because AirTAC publishes flow only as curves and not as a single rated number, send us your application's flow and pressure requirements and we will confirm this exact configuration is correctly sized 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 GFR300 series as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application's flow and pressure requirements and we will confirm the datasheet figures and check this 1/4 in NPT configuration is correctly sized before you order.
The L in GFR30008ALF2T marks the low-pressure regulator type, intended for circuits that operate at reduced working pressure instead of full line pressure. The exact regulation range for the low-pressure type is not published in the catalogue sheet we work from, so ask us to confirm it on request. The standard (non-L) GFR types regulate over the published catalogue ranges, split by drain type.
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.