The AirTAC GFR30015F3WTK AirTAC Filter Regulator 1/2 in NPT 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 GFR30015F3WTK is a size 300 filter regulator: water and particulate removal plus downstream pressure regulation in a single body. This configuration is built with a 1/2 in NPT port, a 5 um filter element (code W, finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and an embedded square gauge scaled in bar. A reverse/check valve (code K) is fitted, and a mounting bracket is included. The polycarbonate bowl suits this size, and the unit handles a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um filtration, automatic, manual or differential-pressure drains, square or external round gauges with MPa, psi or bar scales, and G, NPT or PT threads. Flow figures for the series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR30015F3WTK AirTAC Filter Regulator 1/2 in NPT 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 — 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. 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding filtered, regulated air to a machining center's tool-change cylinders and coolant-valve actuators: the 5 um element strips water and fine particulate before they reach the directional valves, while the regulator holds the set pressure the machine's FRL circuit was designed around.
Conditioning the air that drives pick-and-place and carton-closing cylinders on a packaging conveyor: clean, moisture-reduced air protects the cylinders and valves, the regulator keeps gripping force consistent, and the check valve helps hold downstream pressure through upstream dips.
Supplying spray guns and air-assisted applicators in a paint finishing booth: the 5 um grade removes water and particles that would otherwise blemish the finish, and the regulator lets the operator set the gun supply pressure at the point of use.
Start from the flow your line needs and step up or down the size ladder: size 300 with a 1/2 in port sits in the middle of the GFR range, with sizes 200, 400 and 600 available if your demand changes. Because flow is published as curves and not a single rated figure, ask us to confirm sizing against your application before ordering. Choose the drain to match maintenance access: differential-pressure (this unit, self-acting), automatic, or manual where an operator can bleed the bowl on schedule. Filter grade is 40 um standard or 5 um with code W - this unit carries the 5 um element for finer protection. The square gauge is embedded as standard with MPa, psi or bar scales; an external round gauge is optional. Thread is PT as the catalogue standard with G and NPT as order options (this unit is NPT); a bracket is included, and the K code adds a reverse/check valve.
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, not as a single rated number, so there is no one figure we can honestly quote. Tell us your line's air demand and we will confirm the sizing against the datasheet curves on request before you order.
K means a reverse/check valve is fitted, so air will not flow back through the unit if upstream pressure is lost. The drain on this unit is the differential-pressure type: it discharges collected condensate automatically when the pressure differential across the filter element is high enough, with no operator action needed. Automatic (A) and manual (M) drains are available as order options.
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.