The AirTAC GFR30008MLJC2WT AirTAC Filter Regulator 1/4 in NPT 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 GFR30008MLJC2WT is an AirTAC GFR300 filter regulator: a 5 um filter element and a pressure regulator combined in one body with a single 1/4 in NPT port connection. This configuration is the low-pressure regulator type, fitted with a manual drain on the polycarbonate bowl, an external round gauge reading in psi, and no mounting bracket. In use it removes water and particulate from the compressed air supply and holds a set downstream pressure in one compact unit.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um standard or 5 um (W) filtration, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR30008MLJC2WT AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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, psi 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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) |
Filtered, regulated air feeding directional control valves on a cartoning or filling machine, where the 5 um element helps protect valve internals and the low-pressure regulator holds a gentle set pressure.
Supplying paint or coating guns that run at reduced pressure: the regulator trims the supply down and the filter removes water and particles that would mar the finish.
A drop from the shop air ring to a single machining cell, conditioning the air that actuates clamps, workholding cylinders and air blow-off nozzles.
Choices that matter on this family: step through sizes 200, 300, 400 and 600 to match the port and flow path your line needs - this unit is size 300 with 1/4 in NPT ports. Drain options are differential-pressure (default), automatic (A) or manual (M, as here); a manual drain needs periodic bleeding of collected water. Filter grade is 40 um standard or 5 um with the W code - this unit carries the 5 um element for finer particulate removal. Gauges are an embedded square gauge as standard or an external round gauge (fitted here, psi scale), readable in MPa, psi or bar. Thread is PT as standard with G and NPT as order options; brackets are optional. Flow is published as curves, not a single rated figure, so send us your application details 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 GFR series as curves rather than a single rated figure, so there is no one rated flow number we can quote. Send us your application - port size, downstream demand and line pressure - and we will confirm the sizing against the datasheet on request.
This unit carries the M code, so collected water is released by hand - a good fit where the unit is checked as part of a routine. If you would rather not rely on manual bleeding, the same GFR300 body is available with an automatic (A) or differential-pressure drain; tell us and we will quote the alternative code.
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.