The AirTAC GFR30015LNWT AirTAC Low-Pressure Filter Regulator NPT1/2 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 GFR30015LNWT is a size-300 filter regulator that combines water and particulate filtration with downstream pressure regulation in a single body. This configuration is built for low-pressure service, carries a 5 um filter element (the W grade, finer than the 40 um standard), and has 1/2 in NPT ports. Condensate is removed by the differential-pressure drain, which discharges automatically when the pressure differential across the element rises, so no manual draining routine is required. The bowl on this size is polycarbonate (PC), a mounting bracket is included, and no gauge is fitted.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600, with automatic, manual or differential-pressure drains, 40 um or 5 um elements, gauge options, and PT, G or NPT threads to order. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet and flow figures for your application on request.
| Model | GFR30015LNWT AirTAC Low-Pressure Filter Regulator NPT1/2 |
|---|---|
| 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. |
| (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. |
| (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, reduced-pressure air to pneumatic clamps that must not see full line pressure, with the low-pressure regulator type suited to circuits set well below standard working pressure.
The 5 um element strips water and fine particulate from the shop-air line before it reaches spray equipment, while the regulator holds a steady gun supply pressure.
Conditions the supply to a conveyor-mounted packaging machine: clean, moisture-reduced air at a regulated pressure for pick-and-place cylinders and actuated diverters.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with 1/2 in NPT ports, one step up from the 1/4 in size-300 base and below the larger 400 and 600 bodies. The 5 um element (code W) suits applications where finer particulate removal protects downstream equipment; select the 40 um standard grade where general protection is enough. Drain choice matters: differential-pressure (as fitted here) drains on pressure drop, automatic drains on a timed or level basis, and manual requires operator action. Threads are PT as standard, with G and NPT as order options - this unit is the NPT version. A gauge can be ordered if local pressure indication is needed; this code has none.
Because rated flow is published as curves rather than a single number, 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 this family as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow figures from the datasheet on request before you order.
W is the 5 um filter grade, finer than the 40 um standard element. The drain on this unit is differential-pressure type: it discharges collected condensate automatically when the pressure differential across the element rises, so no manual draining is needed. Automatic and manual drains are available as options in this family.
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.