The AirTAC GFR30008MLC2T 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.
The AirTAC GFR30008MLC2T is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has 1/4 in NPT ports, a manual drain bowl in polycarbonate, the standard 40 um filter element, and the low-pressure regulator type with a fitted external round gauge scaled in psi. A mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and in standard or low-pressure regulator types, with a choice of drain type, filter grade (40 um standard, 5 um optional), gauge style and scale, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application.
| Model | GFR30008MLC2T 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, 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. |
| (blank) | Mounting bracket included. |
| (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. |
| (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. |
| (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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a fixture-clamping manifold that runs at reduced supply pressure, this low-pressure type filter regulator cleans the air of water and swarf and holds the clamp circuit at its set pressure, with the psi gauge giving the operator a direct reading at the station.
Feeding hold-down jets and small actuator drops along a packaging conveyor, the 1/4 in NPT connection suits branch take-offs, the manual drain suits a line checked at shift start, and the 40 um element keeps debris out of the downstream valves.
On a bottling machine where pusher and divertor cylinders run at a lowered pressure, this unit filters the workshop air and regulates the drop locally, with the bracket mounting it to the machine frame next to the gauge.
Start with the size and port: this unit is size 300 with 1/4 in NPT ports; step up to size 400 or 600 if the circuit needs more flow capacity, and confirm sizing against the published flow curves before ordering. The low-pressure regulator type in this code suits circuits that run at reduced supply pressure; its exact adjustment range is not published, so confirm it with us against your set pressure. Drain is manual here - you drain the polycarbonate bowl by hand, which suits installations checked as part of a routine; automatic or differential-pressure drains are available if you prefer hands-off condensate removal. The 40 um element is the standard grade; specify the W code for the 5 um element where finer filtration is needed. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is NPT; PT and G are order options, and a bracket is included.
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 this series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your application and we will confirm the flow data from the datasheet on request, so you can size the 1/4 in ports against your actual demand before ordering.
The M in the code selects the manual drain: condensate collects in the polycarbonate bowl and is released by hand when you open the drain. This suits installations visited on a routine. If you cannot guarantee regular checks, the same size is available with an automatic or differential-pressure drain instead.
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.