The AirTAC GFR300C15AC2WT 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 GFR300C15AC2WT is a 300-size filter regulator: one body that first strips water and particulate from compressed air, then regulates downstream pressure. This configuration is fitted with a 5 um filter element (finer than the 40 um standard), an automatic drain that discharges collected condensate from the bowl without operator attention, and an external round gauge reading in psi. The 1/2 in NPT port suits main air drops and larger point-of-use lines, and the standard regulator covers a setting range of 0.15-0.9 MPa (20-130 psi). 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 is offered in sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, with a choice of drain type, filter grade, gauge style and scale, and optional reverse/check valve. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR300C15AC2WT 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) |
Feeds clean, pressure-controlled air to the tool-change and clamping circuits of a machining centre, with the 5 um element protecting directional valves from fine particulate and the automatic drain handling condensate on a lightly attended cell.
Installed on the air header of a cartoning or wrapping machine, it regulates the supply pressure to cylinders and grippers at a stable setpoint read on the psi gauge, while the filter stage keeps moisture and debris out of the machine's valve island.
Supplies regulated air to hold-down cylinders, diverters and stop gates along a conveyor line, where the automatic drain keeps condensate out of the distribution run and the 1/2 in port carries the line's air demand.
Step up or down through the 200/300/400/600 sizes to match the port and flow path your line needs; this unit sits at 300 size with a 1/2 in NPT port. Choose the drain to match access: automatic (as here) where the unit is hard to reach, manual where an operator drains on schedule, or the differential-pressure default. Choose 40 um for general air-prep or 5 um (this unit) where downstream valves and actuators need finer protection. Gauge style and scale (square embedded, or round external in MPa, psi or bar), the PT/G/NPT thread, and the bracket are all decodable choices - this configuration includes the bracket and a round psi gauge. Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application before ordering.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and expected air demand and we will confirm the sizing from the datasheet on request before you order.
The automatic drain discharges collected condensate from the bowl by itself, which suits units mounted high, inside enclosures or on lightly attended machines. If your maintenance team drains bowls on a schedule instead, the manual-drain variant of the same GFR300 size is the alternative; the differential-pressure drain is the catalogue default.
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.