The AirTAC GFR30015LJNWT AirTAC Filter Regulator NPT 1/2 in, 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 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 AirTAC GFR30015LJNWT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This unit is built on the 300 size with 1/2 in NPT ports, carries the W-coded 5 um filter element, and is the L-coded low-pressure regulator type for circuits that run below standard regulator settings. The bowl drains by differential pressure, and this configuration is supplied without a gauge or mounting bracket.
This is a genuine AirTAC part. The GFR family spans the 200, 300, 400 and 600 sizes with port options from 1/8 to 1 in, PT as the standard thread and G or NPT available to order, plus a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge options and bracket choices. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. AirTAC publishes flow as curves rather than a single rating, so ask us to confirm the figures for your application.
| Model | GFR30015LJNWT AirTAC Filter Regulator NPT 1/2 in, 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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". |
| (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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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) |
Feeding spray guns on a finishing line, where the 5 um element keeps water and particulate out of the coating air and the low-pressure type holds a gentle, steady setting at the gun.
Supplying the hold-down circuit on a CNC fixture, where the combined filter and regulator keeps chips and moisture out of the clamp valves while maintaining a low clamping pressure.
Air preparation for the small actuation cylinders on a carton-forming or case-sealing conveyor, where the 1/2 in NPT connection serves the line manifold and the 5 um grade protects the directional valves.
Size and port step up with air demand: the 300 size with 1/2 in NPT ports sits mid-range in the GFR line, so check your expected consumption against the published flow curves before ordering - we will confirm sizing on request. The W code selects the 5 um element over the 40 um standard; choose 5 um where downstream valves, cylinders or instruments need finer air. Drain is differential-pressure on this unit; automatic (A) and manual (M) drains are orderable alternatives. The L code makes this the low-pressure regulator type, the N code omits the gauge and the J code omits the bracket - configurations with a gauge or bracket fitted can be ordered instead. Thread here is NPT (T); PT is the catalogue standard and G (BSPP) is also available to 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 this family as curves, not as a single rated figure, so we do not quote a number here. Send us your air demand and working pressure and we will confirm from the datasheet whether this 300-size, 1/2 in NPT unit is correctly sized for your line.
The N code in GFR30015LJNWT specifies that no gauge is fitted. Other GFR configurations can be ordered with an embedded square gauge or an external round gauge, with MPa, psi or bar scales - ask us if you need a gauged version.
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.