The AirTAC GFR30015LC1WTK AirTAC Filter Regulator NPT 1/2 in 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 GFR30015LC1WTK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is fitted with a 1/2 in NPT port, the fine 5 um filtration element (code W), a differential-pressure drain on the bowl, the low-pressure regulator type, an external round pressure gauge scaled in MPa, a reverse/check valve, and a mounting bracket. The differential-pressure drain bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough, so the unit suits duty where regular manual draining is impractical.
This is a genuine AirTAC part. The GFR family is published 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, manual or automatic drain as alternatives to the differential-pressure drain, a 40 um standard element or the 5 um W element, and gauge choices. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures against your application before ordering.
| Model | GFR30015LC1WTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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 | Low-pressure 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 — round, 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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) |
Air-prep point for the clamp cylinders on a CNC machining fixture: the 5 um element keeps spool valves clean while the low-pressure regulator holds the clamping circuit at the pressure the fixture design calls for.
Supply point for the air cylinders that drive carton forming and sealing heads on a packaging line, where fine filtration protects the directional valves and the check valve holds the set pressure against backflow.
Conditioning station on a lab or pilot-plant compressed-air manifold, filtering supply air to 5 um and regulating it down to the low working pressure that bench-top pneumatic apparatus requires.
Choose the size and port step against the air demand of the circuit: this unit is a 300 with a 1/2 in NPT port; smaller and larger steps exist across the GFR range. The 5 um W element is the right choice when downstream valves, cylinders or instruments need finer filtration than the 40 um standard element provides. Drain type is a real decision: this unit uses the differential-pressure drain, with manual and automatic variants available in the family. The low-pressure regulator type here is intended for circuits that work below the standard regulator's range; its exact adjustment range is not published in our sheet, so confirm it with us. The round gauge fitted to this code is scaled in MPa; psi and bar scales are options. Thread is NPT on this code, with PT standard and G available to order, and the bracket is included.
Because flow is published as curves and not as 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. 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 we do not quote a figure here. Tell us your line pressure and the air demand of the circuit, and we will confirm the sizing from the datasheet curves on request before you order.
The blank drain position in the code means the differential-pressure drain: condensate collected in the PC bowl is bled off automatically when the pressure differential across the 5 um element is high enough, with no daily manual draining. Manual (code M) and automatic (code A) drain variants are available in the GFR family if your duty calls for them.
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.