The AirTAC GFR300-15T AirTAC Filter Regulator NPT1/2 is a genuine G-series filter regulator: water separation, 40 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 GFR300-15T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds a steady downstream pressure. This configuration has 1/2 in NPT ports, the standard 40 um filter element, a differential-pressure drain, and an external round pressure gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the regulating range is 0.15-0.9 MPa (20-130 psi), and the operating temperature is -5 to 70 C, non-freezing. The polycarbonate bowl shows collected condensate at a glance; no mounting bracket is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, manual or automatic drain options, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, and G or NPT threads as order options. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300-15T AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 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. |
| J | Supplied without bracket. |
| (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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding clean, regulated air to carton sealers, case erectors and wrapper actuators on a packaging line, where water and debris in the supply cause sticky valves and inconsistent cylinder strokes.
Supplying regulated air to stop gates, pushers and divert cylinders along a conveyor system, keeping actuator speed repeatable as the header pressure wanders during shift peaks.
Point-of-use conditioning ahead of impact wrenches, air ratchets and inflation stations in a vehicle maintenance bay, protecting tools from condensate and holding a set working pressure.
Choose the size by the flow your line needs: 200, 300, 400 and 600 step up in port and capacity, with this unit at size 300 and 1/2 in NPT. Pick the drain type - differential-pressure (this unit), automatic (A) or manual (M); the regulating range differs by drain type, and on this differential-pressure unit it is 0.15-0.9 MPa (20-130 psi). Filter grade is 40 um standard or 5 um with code W; gauges come as the embedded square type or an external round gauge with MPa, psi or bar scales. Thread is PT as standard, with G and NPT as catalogue options to order; a bracket is optional and not fitted here. 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.
Flow for this unit is published in the AirTAC catalogue as curves rather than a single rated figure, so we do not quote a number here. Send us your air consumption and line pressure and we will confirm the datasheet flow curve and check the size against your application on request.
C means an external round gauge is fitted instead of the standard embedded square gauge, and 2 sets the scale to psi (1 is MPa, 3 is bar). The gauge reads regulated downstream pressure so you can set the 0.15-0.9 MPa (20-130 psi) range precisely. The T at the end means NPT threads; PT is the standard thread and G is also available to order.
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.