The AirTAC GFR30008LJC2WK AirTAC Filter Regulator PT1/4 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 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 GFR30008LJC2WK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate down to 5 um (the fine W grade, versus the 40 um standard element) and regulates downstream pressure in a low-pressure type suited to circuits that run well below standard working ranges. The 1/4 in PT port, differential-pressure drain, external round psi gauge and built-in reverse/check valve are all part of this exact configuration, and the polycarbonate bowl lets you see accumulated condensate at a glance.
This is a genuine AirTAC part from the GFR300 size family, one of four sizes (200/300/400/600) that step up in port and flow capacity, with PT, G and NPT thread options, drain choices, gauge scales and bracket options across the range. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008LJC2WK AirTAC Filter Regulator PT1/4 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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". |
| (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. |
| J | Supplied without bracket. |
| (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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding clean, regulated low-pressure air to gripper and vacuum-assist circuits on a carton or blister packaging machine, where the 5 um element protects compact control valves from water and fine debris.
Conditioning shop-air for benchtop testers, sample-handling actuators and pneumatic dosing pumps in a laboratory or QC cell, where fine filtration and a stable, lower regulated pressure are required.
Supplying filtered, regulated air to stopper, pusher and gate cylinders along a bottling or food-conveyor line, with the check valve holding the circuit if upstream pressure dips.
Sizing starts with the port step: this unit is 1/4 in PT in the GFR300 size, so match it to your line diameter and required air demand, stepping up to GFR400 or GFR600 if demand is higher. The 5 um element here is the finer of the two published grades (40 um standard, 5 um optional); choose 5 um where downstream valves, cylinders or instruments need cleaner air. The differential-pressure drain bleeds condensate automatically as flow passes through, with no manual draining routine. The low-pressure (L) type regulates in a lower band than the standard version, so confirm your working pressure suits it. The fitted round gauge reads in psi, and the built-in check valve holds downstream pressure if upstream supply drops. Thread is PT as standard; G and NPT are order options, and a mounting bracket is not included with this code. Because flow is published as curves rather than one rating, 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. 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. Tell us your line pressure and air demand and we will confirm the flow from the datasheet curves for your exact conditions before you order.
The L in the code marks the low-pressure regulator type, intended for circuits regulated below the standard working band; the exact adjustment range for this type is not published, so ask us to confirm it. The W marks the 5 um filter element, the finer of the two grades (40 um is standard), which suits downstream valves and instruments that need cleaner air.
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.