The AirTAC GFR300C15C3WT 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 GFR300C15C3WT is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/2 in NPT port, a 5 um filter element (finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi). A round pressure gauge scaled in bar is fitted, a mounting bracket is included, and no reverse (check) valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits size 300 units; only size 600 uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge style and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15C3WT 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) |
Conditioning and regulating the air feeding filling and capping valve actuators on a beverage line, with the 5 um element protecting pilot valves from water and fine particles.
Supplying clean, regulated air to the diverters and pusher cylinders that route parcels on a distribution centre conveyor, with the differential-pressure drain handling condensate during continuous running.
Filtering and regulating the air feeding spray guns in a finishing booth, where the 5 um grade helps keep water and particulates out of the finish and the bar gauge gives a clear setpoint reading.
Size 300 with a 1/2 in port sits in the middle of the GFR range; step up to 400 or 600, or down to 200, according to the flow your line needs - we can check the published flow curves against your demand before you order. Drain choice matters: differential-pressure (this unit) needs no attention while air is flowing, automatic drains empty the bowl on a cycle, and manual drains suit intermittently used lines. This unit carries the 5 um (W) element; the 40 um standard grade is the usual choice for general plant air, with 5 um for finer downstream equipment. The fitted gauge reads in bar; square embedded gauges and MPa or psi scales are alternatives. Thread here is NPT; PT is the standard and G is also an order option. A bracket is included with this configuration.
Flow for GFR units is published as curves, not a single rating, so please 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 GFR units as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Send us your line pressure and air demand and we will confirm the relevant datasheet figures for this 1/2 in, size 300 unit before you order.
The W code in GFR300C15C3WT specifies the 5 um filtration grade, which is the finer of the two catalogue options (40 um is standard). Choose 5 um where downstream valves, instruments or finishing equipment need cleaner air; the 40 um grade is the usual choice for general plant air. Both grades are available across the GFR range.
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.