The AirTAC GFR30015LC3WT AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR30015LC3WT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, with no lubricator. This configuration is the 300 size with a 1/2 in NPT thread, fitted with a 5 um filter element (code W) for finer removal of water and particulate than the standard 40 um grade, a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, and a low-pressure regulator type (code L) for circuits set below standard working ranges. The round external gauge is fitted and scaled in bar, 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 the 300 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200, 300, 400, 600) with port options from 1/8 in to 1 in, thread choices of PT (standard), G and NPT, drain variants (differential-pressure, automatic, manual), 40 um or 5 um filtration, standard or low-pressure regulation, and gauge or no-gauge builds. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for your application on request.
| Model | GFR30015LC3WT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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, bar 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. 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. |
| 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeds and regulates the hold-down clamps on a machining-cell press, where workpieces are secured at reduced pressure and the 5 um element keeps fine particulate out of the clamp cylinders.
Supplies filtered, regulated air to the low-pressure actuators on a carton-forming and sealing line, with the differential-pressure drain clearing condensate during continuous production runs.
Conditions the air feeding laboratory automation modules that operate at modest pressures, where the 5 um grade protects sensitive pilot valves and the bar-scaled gauge gives a clear local setpoint reading.
Step up or down through the 200/300/400/600 size ladder to match the port and flow path your line needs - the 300 size with a 1/2 in NPT thread sits mid-range. Choose the 5 um element (this unit, code W) when downstream valves, cylinders or instruments need finer air than the standard 40 um grade; the differential-pressure drain suits continuous-flow duty, while automatic or manual drains are the alternatives for intermittent or attended service. This is the low-pressure regulator type, so confirm your set-pressure window with us before ordering. Gauge scale here is bar; MPa and psi scales are the other catalogue options. PT is the standard thread and G or NPT are ordered as specification options; a bracket is included with this unit.
Flow for the GFR series is published as curves, not a single rating, so we cannot quote a rated number here. Send us your application details and we will confirm sizing against the datasheet curves before you order.
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 rather than a single rated figure, so we do not quote a rated number. Send us your application - port size, downstream demand and set pressure - and we will confirm the flow from the datasheet on request.
The W in the code GFR30015LC3WT specifies the optional 5 um element instead of the standard 40 um grade. Choose 5 um when the downstream valves, cylinders or instruments need finer air; the standard 40 um grade is the usual choice for general plant air. Both grades are catalogue options on the GFR300 series.
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.