The AirTAC GFR30015ALNT AirTAC Filter Regulator NPT1/2 | Low-Pressure 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 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 GFR30015ALNT is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is threaded NPT1/2 (1/2 in), carries the standard 40 um filter element, and is fitted with an automatic drain, so collected condensate is discharged without manual attention. It is the low-pressure type, intended for applications where the regulated set point sits below the standard unit's range, and it is supplied without a gauge, with a mounting bracket included. The polycarbonate bowl is transparent for a visual check of the element and drain condition.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard, G and NPT as order options), drain types, filter grades and gauge options, so an alternate configuration can be quoted if your build changes. Rated flow is published as curves rather than a single figure; ask us and we will confirm the datasheet figures for this exact model on request.
| Model | GFR30015ALNT AirTAC Filter Regulator NPT1/2 | Low-Pressure |
|---|---|
| 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 | 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 | Automatic 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. 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". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| 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. |
| (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) |
Feeds clamping cylinders and swing clamps on a welding or assembly fixture where the regulated pressure is deliberately kept low to protect the workpiece, with the automatic drain handling condensate from a long, unattended shift.
Sits upstream of the machine tool's solenoid-valve stack, filtering water and swarf-laden particulate from the shop air main and regulating the supply pressure the tool changer and pallet clamps rely on.
Prepares air for the diverters, pushers and stop cylinders along a packaging conveyor line, keeping moisture out of the valves while the automatic drain copes with condensate carryover from the plant ring main.
Size the unit by the port and flow step: 300 size with a 1/2 in port sits mid-range in the GFR line, one step above 200/1/4 in class and below the 400 and 600 sizes, so match it against the air demand of the circuit it feeds. Choose the drain to suit access: this unit has an automatic drain, which suits installations that are not checked daily; manual and differential-pressure drain versions exist if you prefer operator-controlled or supply-side draining. The 40 um element is the standard grade; specify the W code for the 5 um element if the downstream valves or tools need finer filtration. This is the low-pressure type, selected where the working set point is below what a standard regulator covers - we confirm the exact range on request. No gauge is fitted with the N code; gauge and scale options exist on other variants. NPT thread is the order option here; PT is the catalogue standard and G thread is also available. A bracket is included for panel or surface mounting.
Because rated flow is published as curves rather than a single number, send us your application details and we will confirm sizing 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 rated flow for the GFR series as curves, not as 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 figures for this exact 300-size, 1/2 in port model from the datasheet on request.
The N code in GFR30015ALNT means no pressure gauge is fitted; gauge options with different scales exist on other GFR variants if you need a local reading. The L code makes this the low-pressure regulator type, intended for set points below the standard unit's range - the exact adjustment range for the low-pressure type is not published in our sheet, so we confirm it on request.
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.