The AirTAC GFR300C15ALC3WT AirTAC Filter Regulator NPT1/2, 5 um 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 AirTAC GFR300C15ALC3WT is a GFR-series filter regulator: it removes water and particulate from compressed air and holds a reduced downstream pressure in a single body. This configuration is built on the GFR300 size with 1/2 in NPT ports, a 5 um filter element (code W), an automatic drain that bleeds collected condensate without manual attention, and the low-pressure regulator type for circuits running at reduced working pressures. A round pressure gauge with a bar scale is fitted, the mounting bracket is included, the bowl is metal, and the operating 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 options from 1/8 in to 1 in, plus choices of drain type, a 40 um standard or 5 um fine element, embedded square or external round gauges with MPa, psi or bar scales, PT, G or NPT threads, and an optional reverse/check valve. Rated flow is published as curves rather than a single figure, so we confirm flow and full datasheet details on request before you order.
| Model | GFR300C15ALC3WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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) |
Point-of-use air preparation for the clamps and tool-change cylinders on a machining cell: the 5 um element strips mill-air moisture and fines before they reach the fixture, while the regulator holds a steady reduced pressure at the clamp.
Feeds the sealing jaws and gripper cylinders along a packaging conveyor section. The automatic drain clears condensate through continuous shifts so the bowl never needs bleeding by hand, and the bar-scale gauge lets operators check line pressure at a glance.
Conditions supply air for the low-pressure spray guns and air knives at a paint or coating booth, where the low-pressure regulator type matches the reduced working band and the metal bowl suits a demanding shop-floor environment.
The decodable choices are the size and port step (matched to your line's connection and duty), the drain type (automatic here, with manual and differential-pressure available), the filter grade (this unit carries the 5 um W element instead of the 40 um standard), the gauge and its scale (this unit has an external round gauge reading in bar), the thread (NPT here; PT is the standard catalogue thread and G is also an order option), and the bracket (included on this unit). The L code marks the low-pressure regulator variant, selected for circuits that run at reduced working pressures; its exact adjustment range is not published in our data sheet, so confirm your set pressure with us before ordering. Because flow is published as curves and not as a single rating, ask us to confirm sizing against your application 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.
Rated flow for the GFR300 size is published as performance curves, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow curves and the full datasheet for this exact model on request before you order.
The L code marks the low-pressure regulator variant, chosen for circuits that run at reduced working pressures. Its exact adjustment range is not published in our data sheet, so confirm your set pressure with us first. Everything else decodes normally: 1/2 in NPT ports, 5 um element, automatic drain, round bar-scale gauge, bracket included, maximum inlet pressure 1.0 MPa (145 psi), and -5 to 70 C operation.
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.