The AirTAC GFR30008LC3T AirTAC Filter Regulator 1/4" NPT 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 differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR300 series combines water and particulate filtration with pressure regulation in a single AirTAC filter-regulator body. This GFR30008LC3T is the 300 size with a 1/4 in NPT port, the low-pressure regulator type, a 40 um standard filter element and a differential-pressure drain, the default drain type for this family. The polycarbonate bowl lets you see accumulated condensate at a glance, a round gauge scaled in bar is fitted, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT as the standard thread and G or NPT to order, plus choices of drain type, 40 um or 5 um filtration, gauge style and scale, and bracket or no bracket. Rated flow for this series is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30008LC3T AirTAC Filter Regulator 1/4" NPT Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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. |
| (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) |
Feeds filtered, regulated air to the clamp and hold-down cylinders on a carton sealing or case-packing line, where the 1/4 in port suits compact drop lines and the low-pressure type matches gentle clamping requirements.
Supplies clean, regulated air to pilot valves and positioners on an actuated-valve skid in a water treatment plant, with the 40 um element keeping debris away from pilot seats and the bar gauge giving a direct readout.
Provides low-pressure regulated air to bench-mounted pneumatic fixtures and test rigs in an R&D workshop, where the round gauge, visible PC bowl and included bracket make setup and monitoring straightforward.
Size and port are the first decision: 200, 300, 400 and 600 step up in port and flow capacity, and this unit sits at 300 with a 1/4 in NPT port (PT is standard; G and NPT are order options). Within the family you can choose drain type (differential-pressure as here, automatic, or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale, and whether a bracket is fitted. The L in this code marks the low-pressure regulator variant. Because flow is published as curves rather than a single rating, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
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 curves rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure, set pressure and required flow, and we will confirm the datasheet curve and check the sizing for your application before you order.
The L in the code marks the low-pressure regulator variant of the GFR300 filter regulator. The exact adjustment range for this variant is not published in our data, so please confirm the range with us against the datasheet. This unit also carries a 40 um element, differential-pressure drain, round gauge scaled in bar, mounting bracket and a 1/4 in NPT port.
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.