The AirTAC GFR30008MLC1T 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 GFR30008MLC1T is a size 300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is a low-pressure type with a 1/4 in NPT port, a 40 um standard filter element, and a manual drain bowl in polycarbonate that you open by hand to expel collected condensate. The fitted round MPa-scale gauge shows outlet pressure at a glance, and a mounting bracket is included for secure panel or frame installation.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, drain options (manual, automatic or differential-pressure), a 5 um element option, gauge and thread choices, and low-pressure or standard regulator types. Flow for this unit is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008MLC1T 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, MPa 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. |
| 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. |
| (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 machining fixture where workpieces are held by air clamps running at reduced pressure, this filter regulator cleans the supply and lets the operator set and read the holding pressure on the MPa gauge.
Feeding the actuator manifold of a carton-sealing or wrapping line, the unit strips water and pipe scale from shop air and holds a steady low regulated pressure so sealing arms and pushers cycle consistently.
On a bench rig or pilot rig where instruments and small air-driven devices need clean, gently regulated air, the 40 um element protects downstream hardware and the round gauge gives a clear pressure reference.
Size 300 with a 1/4 in NPT port suits lines where compressed air feeds valves, cylinders or tools of moderate consumption; step up to size 400 or 600 if your flow curve demands it, or down to 200 for compact circuits. This unit is the low-pressure type, chosen where the working circuit sits well below standard regulator settings; its exact adjustment range is not published, so confirm it with us. The 40 um element is the standard grade for general plant air; specify the W code if you need 5 um finer filtration. The manual drain means an operator opens the bowl valve periodically, which suits attended stations; choose automatic or differential-pressure drain codes for unattended duty. The round gauge is MPa-scaled, and PT is the standard thread with G and NPT as order options. Flow is published as curves, not a single rating, so 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. 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 GFR300 series as performance curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure and the air consumption of your equipment, and we will confirm the sizing from the datasheet curves on request before you order.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released by opening the drain valve by hand. This suits attended stations with regular checks. If the unit will sit unattended, ask about the automatic (A) or differential-pressure (blank) drain versions of the same size 300 regulator.
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.