The AirTAC GFR30008MLJC1TK 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 GFR30008MLJC1TK is a 300-size filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/4 in NPT port, a manual drain on the PC bowl, a 40 um filter element, and the low-pressure regulator type. A round gauge reading in MPa is fitted so the set pressure can be read directly, and a reverse (check) valve is included. No mounting bracket is supplied with this code.
It is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30008MLJC1TK 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 — round, 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Feeding a bench pneumatic press or clamping fixture: the filter section strips water and particulate from the shop air line, while the low-pressure regulator holds a steady, gentle set pressure on the cylinder circuit, read on the fitted MPa gauge.
Mounted at the air inlet of a cartoner, labeller or bagging machine, it cleans the supply, keeps condensate out of downstream valves, and lets an operator set and check the machine's working pressure at a glance.
On a paint line or coating rig where a lower regulated supply is wanted, the 40 um element keeps water and particulate out of the air reaching the gun, and the low-pressure regulator sets the supply pressure for the spray circuit.
Pick the size by the flow your line needs: 300 sits mid-range in the GFR series, with port sizes stepping from 1/8 to 1 in across sizes 200 to 600. Drain type is a real decision: this code has a manual drain, emptied by hand, while differential-pressure (the default) and automatic drains are available on other codes for bowls that empty themselves. The 40 um element is the standard grade; a 5 um element (code W) is the finer option. The fitted round gauge reads in MPa, with psi and bar scales as order options. This unit is NPT-threaded; PT is the standard thread and G (BSPP) is also a catalogue option. No bracket is included with this code. Because flow is published as curves rather than 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so no flow number is quoted here. Tell us your line pressure and the flow your application needs, and we will confirm the datasheet curve for this exact model before you order.
This code has a manual drain: water collected in the PC bowl is drained by hand, which suits installations checked regularly. If the unit will be left unattended, differential-pressure (the default) or fully automatic drains are available on other GFR codes. The 40 um element is standard; code W gives a 5 um element.
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.