The AirTAC GFR30015ALJC3WT AirTAC Filter Regulator NPT1/2, 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 PT1/2" 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 GFR30015ALJC3WT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, with a 1/2 in NPT port. This configuration carries a 5 um filter element (the finer W grade, versus the 40 um standard), an automatic drain that ejects collected condensate without manual attention, and a round pressure gauge reading in bar. It is the low-pressure (L) type regulator, intended for circuits that must be held below the standard regulator's span; the exact adjustment range for this type is not published in the catalogue, so confirm it with us for your setpoint. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl gives a clear view of condensate level and drain condition.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, 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 and sizing for your application before ordering.
| Model | GFR30015ALJC3WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (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. |
|---|---|
| 15 | Port size PT1/2". 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeds filtered, regulated air to clamp cylinders on a CNC machining cell that runs at a low holding pressure, with the 5 um element protecting directional valves from particulate carryover.
Conditions the supply to air knives and blow-off nozzles on a packaging conveyor, where the automatic drain keeps condensate out of the nozzle circuit during unattended shifts.
Serves a low-pressure actuation circuit in a filling hall, with the bar-reading gauge letting operators verify setpoint at a glance and the polycarbonate bowl making condensate level visible.
Size 300 with a 1/2 in NPT port suits lines where 1/4 in ports would restrict flow and a 3/4 in unit would be oversized; step up or down a size if your piping or expected air demand sits at either edge. The 5 um element is the right choice when downstream valves, cylinders or instruments tolerate less particulate than the 40 um standard element leaves behind. The automatic drain suits unmanned or hard-to-reach installations; choose manual or differential-pressure drain types where supervised draining is preferred. The round gauge is external and reads in bar; square embedded gauges and MPa or psi scales are available if you prefer them. NPT is the thread on this code; PT (standard) and G are orderable alternatives. No mounting bracket is included with the J suffix. Because flow is published as curves rather than a single rating, 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 GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, setpoint and expected air demand and we will confirm the sizing from the datasheet before you order.
The A in the code selects the automatic drain, which expels collected condensate on its own instead of waiting for a manual drain, and the W selects the 5 um element instead of the 40 um standard. The L marks the low-pressure regulator type, and C3 fits the external round gauge reading in bar. If you need a different drain, grade, gauge or thread, the same body is available in other coded configurations.
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.