The AirTAC GFR30015F1WTK AirTAC Filter Regulator NPT1/2 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 GFR30015F1WTK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in NPT port, a 5 um filtration element (the fine W grade, one step finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square pressure gauge reading in MPa, and a built-in reverse/check valve that holds downstream pressure if the supply is interrupted. A mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi); operating temperature 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 sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, square or round gauges with MPa, psi or bar scales, PT (standard), G or NPT threads, and optional check valves. Flow is published as sizing curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30015F1WTK AirTAC Filter Regulator NPT1/2 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, MPa 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. |
| 1 | Gauge scale: MPa. 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) |
Feeds filtered, regulated air to clamp and fixture cylinders on a CNC machining cell, where the 5 um element protects precision valve spools and the check valve holds clamp pressure during a supply dip.
Mounted at the drop of a cartoning or wrapping machine to condition and regulate the air serving actuators and sealing cylinders, with the differential-pressure drain removing condensate without operator attention.
Serves as the branch supply point for a multi-valve assembly station, delivering clean 5 um air at a set pressure to directional valves and air cylinders, with the included bracket fixing the unit to the machine frame.
Start with the port and size: this unit is size 300 with a 1/2 in NPT port; if your line needs more or less flow capacity, the GFR family steps through sizes 200/300/400/600 with ports from 1/8 in to 1 in. Choose the drain to match maintenance access: differential-pressure (as fitted here) needs no operator, automatic drains continuously, and manual drain suits attended installations - note the regulation range differs by drain type (0.15-0.9 MPa for auto and differential-pressure, 0.05-0.9 MPa for manual). Pick the filter grade: 40 um standard or 5 um (W) where finer protection is needed - this unit carries the 5 um element. Gauge scale is selectable (MPa, psi or bar) and the thread can be ordered as PT (standard), G or NPT. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet before you order.
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 sizing curves rather than a single rated figure, so we do not quote one number. Tell us your working pressure and air demand and we will confirm the flow from the datasheet for this exact 1/2 in configuration before you order.
The W in the code GFR30015F1WTK specifies the optional 5 um filtration grade instead of the 40 um standard, giving finer protection for downstream valves and cylinders. The K specifies a built-in reverse/check valve that prevents downstream pressure loss back through the unit. Both are order-time choices on the GFR series, as are drain type, gauge scale and thread.
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.