The AirTAC GFR30015LNWTK AirTAC Filter Regulator 1/2 in NPT 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 GFR30015LNWTK is a size-300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 1/2 in NPT port, a 5 um filter element (code W, finer than the 40 um standard), a differential-pressure drain that bleeds condensate automatically as flow passes through, a reverse/check valve that holds downstream pressure when the supply drops, and an included mounting bracket. It is the low-pressure regulator type, and no gauge is fitted - a gauge can be added at the port if downstream indication is needed.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200, 300, 400, 600) covering port sizes from 1/8 in to 1 in with 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); the PC bowl suits these non-freezing conditions. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30015LNWTK AirTAC Filter Regulator 1/2 in NPT 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. |
| (blank) | Mounting bracket included. |
| 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, filtered 5 um air feeding the clamp cylinders keeps spool valves clean, while the low-pressure regulator holds a gentle, repeatable clamp force and the check valve keeps the clamps holding if the shop air dips.
Feeding the directional valves and actuators of a carton-forming packaging machine, the filter regulator strips water and fine particles that would score valve seats, and the differential-pressure drain carries off condensate without stopping the line.
On a laboratory test bench or pilot rig, the 5 um element protects sensitive instruments and flow controls from particulates, and the low-pressure regulator lets technicians run the circuit at the reduced pressures delicate experiments require.
Size and port step up with required flow: the 300 size with a 1/2 in port sits mid-range in the GFR family, so verify your air demand against the published flow curve before ordering - we will confirm the curve on request. This unit is the low-pressure regulator type; if your process needs the standard adjustment span, check the variant with us first. The 5 um element (code W) suits air tools, instruments and valves that need finer filtration than the 40 um standard; a manual or automatic drain can be ordered instead of the differential-pressure drain if your duty cycle demands it.
Thread here is NPT (code T); PT is the standard and G (BSPP) is also a catalogue option - order the suffix that matches your piping. No gauge is fitted (code N); a square or round gauge in MPa, psi or bar scales can be specified separately. The mounting bracket is included. As always, ask us to confirm sizing against the application before ordering.
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 series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your operating pressure and air demand and we will confirm the datasheet curve and check the sizing for your application on request.
The N suffix in GFR30015LNWTK means no gauge is fitted; a square or round gauge in MPa, psi or bar scales can be ordered separately. The L suffix marks the low-pressure regulator type, which regulates at reduced output pressures - the exact adjustment range for this variant is not published in our sheet, so ask us to confirm it 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.