The AirTAC GFR300C15ALF1T 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 See datasheet ports, a differential-pressure 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 GFR300C15ALF1T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body, size 300, with a 1/2 in NPT port. This configuration carries the standard 40 um filter element, an automatic drain that clears collected condensate from the metal bowl without manual attention, and the low-pressure (L) regulator type. An embedded square gauge reading in MPa is fitted, a mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR300 series runs on compressed air at up to 1.0 MPa (145 psi) inlet pressure and -5 to 70 C, non-freezing. Because this unit is the low-pressure type, its exact adjustment range is not published; we confirm it, along with flow figures and the full datasheet, on request. Other sizes, ports, drain types, filter grades, gauge scales and thread options are available across the same series.
| Model | GFR300C15ALF1T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure 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). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeds filtered, regulated air to the gripper and clamp cylinders on a bottling line, with the automatic drain clearing condensate between shifts without a technician opening the bowl.
Sits ahead of a machining centre's tool-clamp circuit, removing water and particles from the supply and holding the low set pressure the clamp cylinders are specified for.
Supplies the air cylinders that divert cartons on a distribution conveyor, keeping the supply dry and regulated at a stable low-pressure setting through the shift.
Choose the size and port against the air your circuit actually uses: 300 is a mid-size frame, here ordered with a 1/2 in NPT port. Pick the drain to match your maintenance routine - automatic (this unit) suits installations that are hard to reach, while manual and differential-pressure drains are order options. The 40 um element is standard; specify the W code for the 5 um grade if downstream equipment needs finer filtration.
The embedded square gauge reads MPa; an external round gauge and psi or bar scales are options, and PT or G threads can be ordered instead of NPT. Flow for this series is published as curves rather than a single rating, so send us your application conditions and we will confirm sizing from 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 flow for the GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and the air consumption of your equipment, and we will confirm the flow from the datasheet on request.
The A in the code means an automatic drain: condensate collected in the bowl is expelled without anyone opening it. Manual and differential-pressure drains are catalogue options on the GFR300 if your installation prefers a different arrangement.
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.