The AirTAC GFR300-15T 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 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 then regulates the downstream pressure. This configuration is threaded 1/2 in NPT, carries the 5 um filter element (code W, finer than the 40 um standard), drains by hand via its manual drain, and is fitted without a pressure gauge, without a mounting bracket and without a reverse-flow valve. The polycarbonate bowl lets you see collected condensate at a glance.
It is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C (non-freezing) operation. With the manual drain fitted, the regulation range is 0.05-0.9 MPa (7-130 psi). AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300-15T AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard 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. |
| (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 clean, pressure-set air to the gripper and capper actuators on a bottling line, with the 5 um element keeping fine particulate out of the valve seats and the manual drain bled during shift changeover.
Conditioning the air supply to the flap-fold and tape-head cylinders of a carton sealer, where the regulator holds a steady setting for consistent fold strokes and the polycarbonate bowl shows condensate build-up at a glance.
Supplying regulated, filtered air to the clamps and quick-connects on a laboratory or QC test bench, where the 5 um grade protects sensitive instrumentation and the 1/2 in NPT port matches the bench manifold.
Size 300 with a 1/2 in port sits in the middle of the G-series range (200, 300, 400, 600); step up or down if your circuit's demand differs - we will check the published flow curve against your application on request. Drain type matters: this unit drains manually, so plan a routine bleed of the bowl, or choose an automatic or differential-pressure drain version where nobody is on hand to drain it. The 5 um element (code W) suits points where finer particulate control matters; the 40 um standard element covers general circuit protection. Thread here is NPT; PT is the standard thread and G (BSPP) is also orderable as a specification option. No gauge is fitted, so add one if you need a local setting reference, and note that no mounting bracket is included.
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 the GFR300 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your line pressure and the demand of the equipment downstream, and we will confirm the datasheet curve figures for this exact 1/2 in NPT configuration before you order.
The M in the code means the condensate in the polycarbonate bowl is released by hand, which suits lines that are checked or shut down regularly. If the unit will sit unattended, an automatic drain (code A) or a differential-pressure drain (the default, blank code) version of the same GFR300 filter regulator is the better choice - the regulation range with a manual drain is 0.05-0.9 MPa (7-130 psi), while the automatic and differential-pressure versions are set between 0.15-0.9 MPa (20-130 psi).
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.