The AirTAC GFR30008MLF1WT AirTAC Filter Regulator 1/4 in NPT, 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MLF1WT is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is built with a 1/4 in NPT port, a fine 5 um filter element (the tighter of the two published grades), a manual drain you operate by hand to empty collected condensate, and a low-pressure regulator type for applications that sit below standard supply pressures. A square pressure gauge scaled in MPa is fitted so the set pressure is visible at the unit, and a mounting bracket is included for secure panel or frame fixing.
This is a genuine AirTAC part from the GFR300 size class, one of four published sizes (200, 300, 400 and 600) with port options from 1/8 in to 1 in and PT, G or NPT threads. Flow for this series 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 | GFR30008MLF1WT AirTAC Filter Regulator 1/4 in NPT, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 1 | Gauge scale: MPa. 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 carton-sealing or case-packing line, this unit filters the shop air to 5 um and holds a steady, reduced pressure to the clamping cylinders, with the fitted MPa gauge letting operators verify the set point at a glance.
For a bench setup running pneumatic test fixtures, the low-pressure regulator type and fine 5 um element protect sensitive instruments and actuators, while the manual drain suits a station that is checked and drained by the operator.
At a paint or coating booth, this filter regulator cleans the air feeding the spray gun and lets the operator dial in a stable working pressure, keeping moisture and particulate out of the finish.
Start with the port step: the 300 size with a 1/4 in NPT port suits lines where downstream demand is modest; step up to size 400 or 600 if the circuit needs a larger port. The 5 um element here is the finer published grade - choose it when downstream valves, cylinders or instruments need cleaner air than the 40 um standard element delivers. The manual drain means an operator opens the drain by hand at intervals, which suits attended stations; pick automatic or differential-pressure drain codes if the unit will run unattended. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are order options, and PT or G threads can be ordered instead of NPT. Because flow is published as curves rather than one rated number, send us your air demand 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 GFR300 series as curves rather than a single rated figure, so we do not quote one number. Send us your application's air demand and working pressure and we will confirm the sizing from the datasheet on request.
The M code in GFR30008MLF1WT specifies a manual drain: condensate collected in the PC bowl is emptied by hand. That suits attended stations on a regular maintenance round. If the unit will run unattended, order the automatic (A) or differential-pressure (blank) drain version instead - same filter regulator, different drain.
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.