The AirTAC GFR30008MLJNWT AirTAC Filter Regulator NPT 1/4 5um 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 GFR30008MLJNWT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/4 in NPT port, a 5 um filter element (code W), a manual drain and the low-pressure regulator type (code L). No gauge is fitted and no mounting bracket is supplied, so plan the install with your own pressure readout and fixing if the circuit needs one. The polycarbonate bowl suits the unit's 1.0 MPa (145 psi) maximum inlet pressure and -5 to 70 C (non-freezing) operating range.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in and PT, G or NPT threads. Drain type, filter grade, gauge, bracket and reverse-valve options let you match the unit to the circuit. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008MLJNWT AirTAC Filter Regulator NPT 1/4 5um |
|---|---|
| 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 | 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". |
| 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. |
| J | Supplied without bracket. |
| 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) |
Feeds filtered, regulated air to the low-pressure clamp cylinders of a carton-sealing line, with the 5 um element protecting downstream valve seats and the manual drain cleared during shift checks.
Supplies cleaned, regulated low-pressure air to the spray nozzle of a laboratory coating or test rig, where the 5 um grade keeps particulates out of the nozzle and the finish.
Sits ahead of low-pressure actuators on a material-handling line, dropping header supply down to the working pressure the gate and sorter cylinders were sized for.
Size and port step up with air demand: this unit is size 300 with a 1/4 in NPT port, and larger circuits move to size 400 or 600. The 5 um element (code W) suits circuits that need cleaner air than the 40 um standard. The L code sets the low-pressure regulator type; its exact adjustment range is not published, so we confirm it on request. Manual drain means the bowl is bled by hand on a routine - if the unit sits out of reach, automatic or differential-pressure drains are decodable variants. Gauge, bracket and reverse-valve options, and PT or G threads, can also be ordered as variants. 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your operating pressure and air demand and we will confirm the flow from the datasheet for this 1/4 in NPT, 5 um, low-pressure configuration before you order.
The M in the code sets a manual drain: the bowl is bled by hand during routine checks. If the unit will be mounted out of reach or run unattended, the same GFR300 size is available with an automatic or differential-pressure drain as a decodable variant.
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.