The AirTAC GFR300-15C2WT AirTAC Filter Regulator NPT1/2 5um 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 GFR300-15C2WT combines water and particulate filtration with pressure regulation in a single AirTAC GFR300 body. This configuration carries a 1/2 in NPT port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain, and a round gauge reading in psi for setting the downstream pressure, which is adjustable from 0.15 to 0.9 MPa (20-130 psi). The bowl on this 300-size unit is polycarbonate, so the condensate level is visible at a glance, a mounting bracket is included, and the rated inlet pressure is 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR filter-regulator family spans four sizes (200, 300, 400 and 600) with ports from 1/8 in to 1 in, drain choices of differential-pressure, automatic or manual, 40 um standard or 5 um fine filtration, gauge scales in MPa, psi or bar, and PT, G or NPT thread options. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR300-15C2WT AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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 | Standard 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 | Fitted — round, psi 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 filtered, regulated air to the tool-clamp and pallet-changer circuits of a CNC machining centre, where the 5 um element and a set downstream pressure protect the actuation between shifts.
Supplying the clamp, pusher and divert cylinders on a bottling or carton-packing conveyor, with the regulator holding a steady setting as stations cycle throughout the run.
Conditioning the air feed to spray guns and air tools in a body-shop prep bay, where fine 5 um filtration and a controlled, gauge-monitored pressure suit finishing work.
The real choices in this family are the size and port step against the flow your line needs (200/300/400/600, ports 1/8 in to 1 in), the drain type - differential-pressure as fitted here, automatic, or manual, which also widens the regulation range down to 0.05-0.9 MPa (7-130 psi) - the filter grade (40 um standard or 5 um fine as on this unit), the gauge style and scale, and the thread (PT is the standard; G and NPT are order options such as the NPT1/2 port on this model). A mounting bracket is included. Flow is published as curves, not a single rating, so 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 rather than a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the flow from the datasheet against your application before you order.
The GFR family offers 40 um as the standard grade and 5 um as the finer optional grade, selected by the W in the code. The 5 um element suits applications that need finer particulate removal ahead of sensitive valves, cylinders or tools; the trade-off is a element that loads sooner, which is why drain choice and element checks matter.
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.