The AirTAC GFR30015MLC3WT 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 AirTAC GFR30015MLC3WT is a GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the pressure delivered downstream. This 300-size unit is built with 1/2 in NPT ports, the finer 5 um (W) filter element instead of the standard 40 um, a manual drain on the polycarbonate bowl, the low-pressure (L) regulator type, an external round gauge on a bar scale, and a mounting bracket. It works on compressed air only, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with a choice of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT to order) and bracket options; this listing is the exact configuration encoded in the model code. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR30015MLC3WT 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 | 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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. 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure 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. |
| 3 | Gauge scale: bar. 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 a light-duty pneumatic press or clamping fixture that needs a lower, steady working pressure than the plant header supplies - the low-pressure regulator trims it down after the 5 um filter stage, with the bar gauge giving a local readout.
Mounted ahead of a CNC machine's air-operated components: the 5 um element catches pipe scale and wear debris, and the manual drain lets an operator clear collected water from the bowl at shift start.
Conditioning air for pick-and-place units and conveyor diverters on a packaging line, where the manual-drain bowl and round bar gauge let line staff check and maintain the supply without stopping the line.
Size and port are the first decisions: the 200/300/400/600 steps rise in port size and flow capacity, and this unit already sits at 300 size with 1/2 in NPT threads (PT is the catalogue standard; G and NPT are order options). This configuration carries the 5 um element - choose it where downstream equipment is sensitive to finer particles; the standard element is 40 um. The polycarbonate bowl drains manually, so an operator opens the drain rather than relying on an automatic or differential-pressure mechanism. The gauge is the external round type on a bar scale; the embedded square gauge and MPa or psi scales are the other catalogue choices, and a mounting bracket is included.
Because the regulator is the low-pressure (L) type and its exact set range is not published in the catalogue, and because flow is published as curves rather than a single rated figure, send us your line pressure, set pressure and required flow and we will confirm suitability against the datasheet before you order.
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 GFR flow as performance curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, downstream set pressure and required flow, and we will confirm against the datasheet whether this 300-size, 1/2 in unit is correctly sized for your application.
It marks the low-pressure regulator type: this unit regulates downstream pressure within the low-pressure band rather than the standard range. The catalogue does not publish the exact figures for this version, so confirm your set pressure with us before ordering. The rest of the code decodes as: 300 size, NPT1/2 threads, manual drain, 5 um filter element, round gauge on a bar scale, and bracket included.
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.