The AirTAC GFR30008MLC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure 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.
GFR30008MLC3TK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration takes a 1/4 in NPT port, drains its polycarbonate bowl manually, and carries the standard 40 um filter element. The regulator is the low-pressure type, a round pressure gauge scaled in bar is fitted, a reverse (check) valve is included, and the unit comes with its mounting bracket. It handles compressed air at up to 1.0 MPa (145 psi) inlet and -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options including automatic or differential-pressure draining, a 5 um (W) filter element, alternative gauge scales and G (BSPP) or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR30008MLC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| 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, bar 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Filter and regulate the air feeding a clamping cylinder on a machine fixture, with the low-pressure regulator type suiting circuits that run below standard mains pressure and the fitted check valve holding the downstream setting.
Condition air at the drop ahead of carton-sealing or case-erector cylinders on a packaging conveyor, removing water and particulate at a manual-drain bowl that an operator empties during shift checks.
Feed a robotic gripper circuit where clean, regulated air at a gentle setting is needed, with the round bar gauge giving operators a direct local readout at the cell.
Pick the size by port and required flow: this is size 300 with a 1/4 in NPT port, while sizes 400 and 600 step up to larger ports and more flow. Because AirTAC publishes flow only as curves, ask us to confirm sizing against your application before ordering. Drain choice matters: this code is manual drain, meaning you open the drain yourself; automatic and differential-pressure drains are available on other codes. Filter grade is the standard 40 um element here; specify W for the 5 um option where finer filtration is needed. A round gauge scaled in bar is fitted; embedded square gauges and MPa or psi scales are the alternatives. Thread: this code is NPT, PT is the AirTAC standard and G (BSPP) is also orderable. The bracket is included, and K adds the reverse/check valve, fitted on this unit.
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 as a single rated figure, so we do not quote a number here. Ask us and we will confirm the datasheet flow curve against your application before you order.
M is the manual drain: you empty the polycarbonate bowl by hand instead of relying on an automatic or differential-pressure drain. L marks the low-pressure regulator type; its exact adjustment range is not published in the catalogue, so confirm it with us if your circuit needs a specific setting.
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.