The AirTAC GFR30008ALJC3WT AirTAC Filter Regulator, NPT1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a automatic 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 GFR30008ALJC3WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, sized for a 1/4 in (NPT1/4) port. This configuration carries the 5 um filter element (the finer option against the 40 um standard), an automatic drain that expels collected condensate without manual attention, and a round pressure gauge reading in bar. The regulator is the low-pressure type, the polycarbonate bowl suits the 300 size, maximum inlet pressure is 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions. No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with 40 um standard or 5 um (W) filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, and PT, G 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 before ordering.
| Model | GFR30008ALJC3WT AirTAC Filter Regulator, NPT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 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 | Automatic 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". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| (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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Filtered, regulated low-pressure air feeding the clamping cylinders on a carton-sealing line. The 5 um element protects valve and cylinder seals from particulate, and the automatic drain keeps condensate out of the circuit without daily bowl checks.
Supplying sorting and diverter cylinders on a distribution conveyor. The low-pressure regulator type suits gentle actuation settings, and the round bar gauge lets line staff verify the set pressure at a glance during shift checks.
Conditioning shop air ahead of spray equipment in a finishing booth. The 5 um grade reduces particulate in the air reaching the gun, the automatic drain handles moisture at an unattended wall point, and the NPT1/4 port matches standard booth pipework.
Choose the size by port and demand: this 300 unit is set up for a 1/4 in NPT port, and the larger 400 and 600 sizes step up in port and flow. Where water carry-over matters, the 5 um element in this code is the finer choice against the 40 um standard; the automatic drain suits points that are not checked daily, while manual and differential-pressure drains remain available in the family. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are decodable choices, as is the bracket option - this code omits it. Because flow is published as curves rather than one rated number, send us your application details 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 GFR family as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, port size and air demand, and we will confirm the applicable curve and sizing from the datasheet on request.
It specifies an NPT thread: this unit has a 1/4 in NPT port. PT is the standard thread for the G-series, and G (BSPP) or NPT are catalogue options selected by code, so order the suffix that matches your pipework.
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.