The AirTAC GFR30008LNWT 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 GFR30008LNWT is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has 1/4 in NPT ports, a 5 um filter element (code W), a differential-pressure drain that discharges collected condensate automatically as air flows through, and the low-pressure regulator type (code L). No gauge is fitted (code N), a mounting bracket is included, and the polycarbonate bowl is standard at this 300 size.
It is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, filter grades of 40 um standard or 5 um optional, a choice of differential-pressure, automatic or manual drain, gauge options and G (BSPP) or NPT thread variants. Flow for the series is published as curves rather than a single rating, so ask us to confirm the datasheet figure for your application.
| Model | GFR30008LNWT 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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) |
Feeding filtered, low-pressure air to pick-and-place grippers on an assembly robot, where the 5 um element protects valve internals and the low-pressure regulator holds a gentle, repeatable clamping setting.
Supplying spray guns on a paint finishing line: the 5 um grade keeps moisture and particulate out of the nozzle while the low-pressure regulator lets operators set a light atomising pressure.
Regulating supply to cylinders and air-piloted valves on a packaging machine, with the differential-pressure drain bleeding collected condensate automatically during normal running.
Size the unit by the port and flow step: sizes 200, 300, 400 and 600 cover 1/8 in to 1 in ports, and this 300 unit carries 1/4 in NPT threads. Choose the drain: differential-pressure (fitted here) works automatically with flow, automatic drains continuously, and manual needs periodic operation. The 5 um element (code W) suits instruments and sensitive valves; the standard grade is 40 um. Thread is NPT on this code; PT is the standard catalogue thread and G (BSPP) is also available. A mounting bracket is included; gauges are optional in the series but not fitted here. Because flow is published as curves, not a single rating, 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 this series as curves rather than a single rated figure, so we do not quote a number. Contact us and we will confirm the datasheet curve against your application before you order.
L marks the low-pressure regulator type, intended for circuits that run well below standard line pressure; the exact adjustment range for this version is not published in the catalogue, so we confirm it on request. The N in the code means no gauge is fitted - gauge options are available elsewhere in the GFR series.
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.