The AirTAC GFR30008LC3WT AirTAC Filter Regulator NPT1/4 5 um is a genuine G-series filter regulator: water separation, 5 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 GFR30008LC3WT is a GFR300-series filter regulator: a 5 um filter element and a pressure regulator combined in one body, so water and particulate removal and pressure setting come from a single unit. This configuration has a 1/4 in NPT port, a differential-pressure drain that bleeds condensate automatically as flow passes through, the low-pressure regulator type, a round gauge scaled in bar, and a polycarbonate bowl with the mounting bracket included. 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 family, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G or NPT threads. Drain type, filter grade, gauge style and scale, reverse valve and bracket options can be selected to suit the line. Flow for this family is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008LC3WT AirTAC Filter Regulator NPT1/4 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 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 — round, 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a fixture-clamping circuit that holds cylinders at reduced pressure so delicate parts are not marked, the GFR30008LC3WT filters the supply to 5 um and holds the set pressure from one compact body.
Feed the directional valves and cylinders on a packaging conveyor with clean, regulated air; the differential-pressure drain bleeds collected condensate while the line keeps running.
Looms and textile frames that run air cylinders at modest pressures suit the low-pressure regulator type, with the round bar gauge giving operators a direct local pressure readout.
Size and port set the air capacity: the GFR300 here takes a 1/4 in NPT connection, and the 200/400/600 steps move up or down in port and flow. Filter grade is decodable: 40 um is standard and W orders the 5 um element fitted here. Drain choice is differential-pressure (default), automatic (A) or manual (M). Gauge options are the embedded square gauge or an external round gauge, scaled in MPa, psi or bar - this unit carries the round bar gauge. The low-pressure type (L) suits circuits that work below standard regulator settings; its exact adjustment range is not published, so confirm it with us. Threads are PT as standard with G and NPT as order options, and a bracket is included.
Flow for this family is published as curves, not a single rated number, so send us your flow and pressure requirement 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 series as curves rather than a single rated figure, so we do not quote a number here. Send us your flow and pressure requirement and we will confirm the datasheet figures for this exact model on request.
The W in this model code orders the 5 um filter grade, which suits valves and instruments that need finer filtration than the 40 um standard element. If your circuit is content with standard filtration, the 40 um version of the same GFR300-08 low-pressure configuration is the one to ask for.
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.