The AirTAC GFR30015LJNWTK 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 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 GFR30015LJNWTK is a size-300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is fitted with a 5 um filter element (code W), a differential-pressure drain that bleeds accumulated condensate whenever the pressure differential across the element rises, a reverse/check valve (code K) that holds downstream pressure when the upstream supply is lost, and NPT1/2 ports. It is the low-pressure type (code L) and is supplied without a gauge (code N) and without a mounting bracket (code J).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so contact us and we will confirm the datasheet figures for your application on request.
| Model | GFR30015LJNWTK 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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. |
|---|---|
| 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. |
| 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
On a CNC fixture line, this filter regulator cleans the shop air to 5 um and holds a steady low clamping pressure to the swing clamps, while the check valve keeps the clamps from releasing if the main supply drops.
Feeding cylinders and grippers on a carton-sealing or wrapping line, the unit strips water and fine particles ahead of the valves and regulates the supply at the lower pressure the actuators are set up for.
On test rigs and analytical instrument panels, the 5 um element protects sensitive pneumatic components from particulate and moisture, and the regulator sets the gentle, stable pressure the instruments need.
Start with the port step: this unit is size 300 with NPT1/2 connections, so match it to your line size and required air consumption. The 5 um element (code W) suits applications that need finer particulate removal than the standard 40 um grade; choose the standard grade if finer filtration is not required. Drain type here is differential-pressure, which discharges condensate automatically on a pressure-differential signal; automatic (A) and manual (M) drains are available elsewhere in the range if you prefer. The low-pressure type (L) is intended for applications regulating at lower pressures - the exact range for this variant is not published, so confirm it with us before ordering. No gauge is fitted on this code (N); gauges with MPa, psi or bar scales can be ordered. Thread options are PT (standard), G (BSPP) and NPT - this code is NPT. Bracket: not included (J). Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application 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 GFR series as curves rather than a single rated figure, so we do not quote a flow number. Tell us your line size and air consumption and we will confirm the datasheet flow figures for this exact unit on request.
The N in the code means no gauge is fitted. You can order a gauge separately (embedded square or external round, with MPa, psi or bar scales) or use an existing panel gauge. Also note this is the low-pressure type (L), and the exact regulation range for that variant is not published - confirm it with us before ordering.
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.