The AirTAC GFR30008MLC1WT 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 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 GFR30008MLC1WT is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has a 1/4 in NPT port, a 5 um filter element, a manual drain on the polycarbonate bowl, and a round external pressure gauge scaled in MPa. It is the low-pressure type, intended for circuits that run at low regulated pressure; the exact adjustment range is not published, so confirm it with us. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200/300/400/600) with port options from 1/8 to 1 in, PT as the standard thread and G or NPT to order, plus drain choices, 40 um or 5 um filtration, gauge styles and scales, and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures against your application.
| Model | GFR30008MLC1WT AirTAC Filter Regulator NPT1/4 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 — round, 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). |
| C | Gauge shape: Round. 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) |
Feeding spray guns and air-assisted applicators that run at low regulated pressure, with 5 um filtration keeping particulate out of the finish air line and the manual drain emptied at each cleanup.
Regulating low-pressure air to sealing jaws and clamp cylinders on food packaging machines, where the manual drain is emptied during scheduled shift changeovers.
Supplying pilot air to solenoid valve manifolds and small actuators on process skids whose circuits are specified for low regulated pressure, with the MPa gauge giving a local setpoint readout.
Size and port set the flow capacity: the GFR300 carries a 1/4 in port, one step up from GFR200 and below GFR400/GFR600, so match the size to the air demand of the circuit. This unit is specified with a 5 um element (code W) instead of the 40 um standard, a manual drain you operate by hand rather than the differential-pressure or automatic options, and a round external gauge scaled in MPa (psi and bar scales are alternatives). The thread here is NPT; PT is the AirTAC standard and G (BSPP) is also available to order, and the mounting bracket is included. Because rated flow is published only as curves, 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 GFR300 as curves, not as a single rated number, so we do not quote a figure here. Send us your air demand and line pressure and we will confirm the sizing from the datasheet on request.
The manual drain (code M) is emptied by hand, which suits stations visited daily; differential-pressure and automatic drains are the alternatives. The 5 um element (code W) is one step finer than the 40 um standard, for circuits where downstream equipment needs cleaner air. This unit is also the low-pressure type, so confirm its adjustment range with us before ordering.
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.