The AirTAC GFR30008MLJF1WTK AirTAC Filter Regulator NPT1/4 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 GFR30008MLJF1WTK is an AirTAC GFR300 filter regulator: a 1/4 in (NPT1/4) unit that removes water and particulate from compressed air and holds downstream pressure in one body. This configuration carries a 5 um filter element (code W), a manual drain on the polycarbonate bowl, a low-pressure regulator type, an embedded square gauge scaled in MPa, and a built-in reverse (check) valve. It is supplied without a mounting bracket. 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 from the GFR300 size family. Across the G-series you can choose sizes 200/300/400/600, drain types (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge scale, PT/G/NPT threads and bracket options. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR30008MLJF1WTK AirTAC Filter Regulator NPT1/4 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 | Fitted — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
| (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. |
| K | Reverse-flow (reflux) valve fitted. |
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 clamping cylinders that must hold a reduced, stable pressure rather than full line pressure; the low-pressure regulator type and the built-in check valve suit circuits where the clamp must stay set if supply dips.
Supplying filtered, regulated air to sealing jaws and forming cylinders on a packaging conveyor, with the 5 um element protecting small pilot valves from particulate and the manual drain cleared during shift checks.
Conditioning air for bench and pilot test rigs that run at reduced pressure, where the square MPa gauge gives a direct readout and the check valve prevents back-feed between rigs on a shared drop.
The real choices on this unit are decodable from the code: the 300 size with its 1/4 in NPT port suits circuits plumbed at 1/4 in; the 5 um element (W) is the finer of the two published grades (40 um is standard); the manual drain means an operator opens the bowl drain during checks rather than relying on a differential-pressure or automatic drain; and the low-pressure regulator type is intended where downstream settings sit below the standard band - the exact range is not published, so confirm it with us. The square gauge is scaled in MPa and the check valve holds the downstream setting if supply is lost. Flow is published as curves, not a single rating, so 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 as curves, not a single rated figure, so we do not quote a number on the page. Tell us your operating pressure and required flow and we will confirm sizing from the datasheet on request.
Manual drain means an operator opens the bowl drain during routine checks. Differential-pressure (the default) and automatic drains are catalogue options on the GFR300 if you prefer unattended draining. The bowl on this 300 size is polycarbonate; only size 600 uses an aluminium alloy bowl.
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.