The AirTAC GFR30008MLJF2TK AirTAC Filter Regulator NPT1/4 is a genuine G-series filter regulator: water separation, 40 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 AirTAC GFR300 series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the size 300 unit with a 1/4 in NPT port, the low-pressure regulator type, a manual drain on the bowl, the standard 40 um filter element, an embedded square gauge reading in psi, and a reverse/check valve fitted. No mounting bracket is included with this code; a bracket is available as an option. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family is offered in four sizes (200, 300, 400 and 600) with port sizes from 1/8 in to 1 in, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge scale (MPa, psi or bar) and thread (PT standard, with G and NPT as order options). Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and flow curves for your application on request.
| Model | GFR30008MLJF2TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 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, psi 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, regulated air to the clamp and seal cylinders at a tray-sealing station, where the low-pressure regulator type holds a gentle set pressure and the manual drain is emptied during routine line walk-downs.
Sits at the drop to a paint spray gun, removing water and particulate that would ruin finish quality and regulating the atomizing air at the lower pressures this low-pressure type is built for.
Supplies the jet nozzles on a weaving machine with cleaned air at a stable low setting, with the reverse/check valve holding the circuit against backflow and the psi gauge giving operators a familiar readout.
Start with the size and port: 200, 300, 400 and 600 step up in port size and flow capacity, so match the step to the air your circuit needs - here the size 300 unit gives a 1/4 in NPT connection. Because flow is published as curves and not as a single rated number, ask us to confirm sizing against your application before ordering. Choose the drain to suit access: this unit has a manual drain, which suits attended installations where an operator drains the bowl periodically; automatic and differential-pressure drains are available on other codes for unattended points. The 40 um element fitted here is the standard grade; specify 5 um (code W) where finer particulate removal matters. This is the low-pressure regulator type; its exact regulation range is not published in the material we hold, so confirm the set pressure with us before ordering. The square gauge on this code reads in psi; MPa and bar scales are available. Thread is NPT on this code, with PT as the catalogue standard and G (BSPP) as an alternative order option. A mounting bracket can be added if the unit will not be carried by its piping.
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 series as curves, not as a single rated number, so we do not quote a figure. Send us your application details and we will confirm the flow curves from the datasheet and check the sizing against your demand before you order.
The M in the code selects a manual drain: collected water is released by hand, which suits attended installations walked regularly by an operator. For points that are not visited routinely, choose a code with an automatic or differential-pressure drain instead. This unit is the low-pressure regulator type with a 40 um element, a square psi gauge and a 1/4 in NPT port; its exact regulation range is not published, so confirm the set pressure with us.
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.