The AirTAC GFR300-15T AirTAC Filter Regulator NPT1/2 5 um Auto Drain 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 automatic 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 GFR300-15T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single 300-size body with a 1/2 in NPT port. This configuration carries the W code for 5 um filtration (tighter than the 40 um standard element), an automatic drain that expels collected condensate without manual attention, a reverse/check valve, and an external round gauge on the MPa scale. The polycarbonate bowl suits the 300 size, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 to 1 in, drain, filter-grade, gauge, thread and valve options to match. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR300-15T AirTAC Filter Regulator NPT1/2 5 um Auto Drain |
|---|---|
| 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa scale |
| 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. 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". |
| A | Drain: Automatic 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. |
| 1 | Gauge scale: MPa. 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) |
A workholding or clinching press fed at a set pressure: the GFR300-15T cleans the supply line to 5 um and holds the regulated setting, with the automatic drain clearing condensate between cycles.
Sorter gates, stoppers and pushers on a bottling or carton line run from a regulated drop; the round MPa gauge gives operators a visible setpoint and the check valve holds the circuit if supply dips.
Tapped from a 1/2 in main to feed a cell of actuators and air tools, this 300-size filter regulator conditions the branch supply, with the automatic drain handling moisture at the point of use.
Work through the real choices in order. Size and port: 300 with a 1/2 in port suits higher-draw circuits; step up to 400 or 600 if downstream demand grows, or down to 200 for compact drops. Drain: automatic (as here) suits unattended or hard-to-reach installations; manual suits supervised points; differential-pressure drain is the default. Filter grade: 40 um is the standard element, 5 um (W) protects finer valves and cylinders. Gauge: embedded square or external round, on MPa, psi or bar scales. Thread: PT is the standard, with G (BSPP) and NPT as orderable options; a bracket is included unless the J code omits it.
One honest note before ordering: flow is published as curves, not a single rated figure, so send us your application demand and we will confirm sizing against the datasheet before you commit.
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 as curves, not as a single rated number, so we do not quote a figure that could mislead. Send us your application demand and we will confirm the flow curve and sizing from the datasheet on request.
The A code fits an automatic drain, so collected condensate is expelled without anyone opening the bowl - useful for unattended cells or hard-to-reach mounts. Manual and differential-pressure drains remain available in the same size if a supervised drain point suits you better.
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.