The AirTAC GFR30008LJC2WT AirTAC Filter Regulator NPT1/4 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 GFR30008LJC2WT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air and then regulates downstream pressure, in a low-pressure configuration suited to circuits that run well below full line pressure. This unit is built with a 1/4 in NPT port, a fine 5 um filter element (the W grade, versus the standard 40 um), a differential-pressure drain that bleeds collected condensate automatically when the pressure differential rises, and an external round gauge reading in psi. No mounting bracket is fitted and no reverse/check valve is included. The polycarbonate bowl is standard at this size, and the maximum inlet pressure is 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard; G and NPT as order options), drain types, filter grades, gauge styles and scales, and low-pressure or standard regulator types. Because flow is published as curves rather than a single rated figure, ask us to confirm the flow and full datasheet figures for this exact model against your application before ordering.
| Model | GFR30008LJC2WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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 | Differential-pressure 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". |
| (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. |
| 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) |
Feeds filtered, low-pressure regulated air to spray guns on a finishing line, with the 5 um element helping keep oil-free, dry air at the gun and the psi gauge letting operators set and check gun pressure at a glance.
Supplies a dedicated low-pressure branch on a cartoning or wrapping machine, protecting downstream pneumatic actuators from water and particulate while holding a gentle regulated setting for delicate clamping and sealing motions.
Regulates low-pressure air to air-knife or nozzle blow-off points along a conveyor, filtering the supply so fine debris and condensate do not reach the nozzles, with the differential-pressure drain keeping the bowl clear during production.
Size 300 with a 1/4 in NPT port is the mid-range step in the GFR line; step up to 400 or 600 for larger ports and flow, or down to 200 for compact circuits. The 5 um element (code W) is the right choice where finer filtration matters - for example ahead of precision valves or spray equipment - while the standard 40 um grade suits general supply. The differential-pressure drain handles condensate automatically; automatic (A) and manual (M) drains are alternatives in the family. This unit is the low-pressure (L) regulator type with a round psi-scale gauge; square embedded gauges and MPa or bar scales are the other catalogue options. Thread is NPT here; PT is standard and G is also available to order, and brackets are optional (not fitted on this code).
Flow for this series is published as curves, not a single rated number, so we do not quote a rated flow figure. Send us your line pressure, required downstream pressure and expected air demand, and we will confirm sizing and the exact low-pressure adjustment range from 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 rated flow number. Tell us your line pressure, target regulated pressure and expected air demand, and we will confirm the flow figures for this exact model from the datasheet on request.
The W code in GFR30008LJC2WT selects the 5 um element instead of the standard 40 um grade, for finer removal of particulate. The L code selects the low-pressure regulator type, intended for circuits regulated well below full line pressure; the exact adjustment range for the low-pressure type is not published on the sheet, so we will confirm it from the datasheet on request.
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.