The AirTAC GFR30008LF3T AirTAC Filter Regulator NPT 1/4 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 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 AirTAC GFR30008LF3T is a filter regulator: in one body it removes water and particulate from compressed air and regulates the downstream pressure. This 300-size unit has a 1/4 in NPT port, a differential-pressure drain that bleeds condensate as flow passes through, a 40 um filter element, an embedded square gauge scaled in bar, and a mounting bracket. It is the low-pressure (L) version of the GFR range, intended for circuits that hold a reduced set pressure; the exact adjustment range for this type is not published in our sheet and we confirm it on request. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR filter-regulator series, which spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, PT, G and NPT threads, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, and embedded square or optional external round gauges. The polycarbonate bowl on this 300-size unit gives a clear view of condensate level. We confirm flow figures and the full datasheet on request, since flow is published as curves rather than a single rating.
| Model | GFR30008LF3T AirTAC Filter Regulator NPT 1/4 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, bar 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". |
| (blank) | Drain: Differential-pressure 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. |
| 3 | Gauge scale: bar. 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) |
On a fixture where clamping cylinders must close gently and hold at a reduced set pressure, this unit filters the shop air and regulates the low clamping pressure in one body, with the bar-scaled square gauge giving the operator a direct reading at the station.
At a spray booth, guns need clean, moisture-free air held at a modest, stable pressure. This filter regulator strips water and particulate ahead of the guns and holds the low set pressure the finish calls for, while the differential-pressure drain keeps condensate moving out during spraying.
On a packaging line where sealing bars and product-push cylinders run at reduced pressures to avoid crushing, this unit conditions the machine's air supply and regulates the low working pressure, with the included bracket mounting it directly on the machine frame.
Choose the size (200/300/400/600) and port (1/8 in to 1 in) against the air demand of your circuit; larger sizes carry larger ports. Pick the drain: differential-pressure (this unit), automatic (A) for unattended condensate removal, or manual (M). Filtration is 40 um standard; specify W for 5 um where finer particle capture matters. Gauges: the embedded square gauge is standard (this unit in bar; MPa or psi scales are also available) with an external round gauge as an option. Thread: PT is the standard; G and NPT are catalogue order options, and this unit is NPT. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 application details - line pressure, downstream demand and port size - and we will confirm the flow from the datasheet curves on request before you order.
L marks the low-pressure type of regulator; the exact adjustment range for this type is not published in our sheet, so confirm it with us on request. The rest decodes as: GFR filter regulator, 300 size, 08 = 1/4 in port, F = square gauge, 3 = bar scale, T = NPT thread. Drain is differential-pressure and filtration is the 40 um standard element.
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.