The AirTAC GFR30015ALF3TK 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 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 GFR30015ALF3TK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 1/2 in NPT port, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, an embedded square gauge scaled in bar, and a reverse/check valve fitted. It is the low-pressure (L) type, intended for circuits that run below standard line pressures. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in PT (standard), G and NPT threads, with a choice of drain type, 40 um or 5 um filtration, gauge scale, and bracket options. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR30015ALF3TK 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 | 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 | Fitted — square, bar 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. 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. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding clamp and hold-down cylinders on a carton or case-packing line, where filtered air and a steady low set pressure protect the cylinders and keep clamping consistent cycle after cycle.
Conditioning the air supply to spray guns and atomising stations in a paint or coating booth, removing water and particles that would otherwise blemish the finish while holding the gun supply at a low controlled pressure.
Supplying air knives and blow-off nozzles on a conveyor line that clears dust and chips between process steps, with filtered air and a low regulated supply suited to gentle, continuous blowing.
Start with the port step: this unit is size 300 with a 1/2 in NPT port; larger sizes carry more flow, so step up or down depending on the air demand of the circuit. Choose the drain type to suit access: automatic (as fitted here) for unattended duty, manual for periodic service, or the differential-pressure default. Filtration is 40 um standard; specify the W code for 5 um where finer particle capture is needed. The embedded square gauge is standard and can be ordered scaled in MPa, psi or bar (this unit: bar); an external round gauge is optional. PT is the standard thread, with G and NPT as order options. A mounting bracket is included.
Note that this is the low-pressure (L) type: its exact adjustment range is not published in the catalogue, so ask us to confirm it against your set pressure before ordering. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing from the datasheet.
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 GFR series as curves rather than a single rated figure, so we do not quote a number that is not in the datasheet. Send us your application details - port size, downstream demand and set pressure - and we will confirm the sizing from the datasheet on request.
The L in the code marks this as the low-pressure regulator variant, intended for circuits that run below standard line pressures. The exact adjustment range for the low-pressure type is not published in the catalogue, so ask us to confirm it against your set pressure before ordering. Everything else in the code decodes as standard: automatic drain, 40 um element, square bar gauge, NPT thread and a fitted check valve.
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.