The AirTAC GFR30015MLC1WTK 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30015MLC1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is built for a 1/2 in NPT port, uses the fine 5 um filter element (code W), drains by hand through the manual drain, and is the low-pressure (L) regulator type. A round external pressure gauge with an MPa scale is fitted, a reverse/check valve (K) holds downstream pressure on supply loss, and the mounting bracket is included. The polycarbonate bowl suits non-freezing compressed air from -5 to 70 C, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR line spans 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 standard or 5 um (W) elements, standard or low-pressure regulation, gauge style and scale, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30015MLC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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) |
On a bench-mounted pneumatic press or clamp fixture, this unit filters the shop air to 5 um and lets the operator set a low, stable working pressure at the fixture, with the check valve holding the set pressure if the main supply drops.
Feeding the directional-valve bank of a carton forming or wrapping machine, the 5 um element protects spools and seals from water and debris while the regulator holds the low operating pressure the valve island is designed for.
At a blow-off or cleaning station along a packaging conveyor, this unit removes condensate and fine particles from the air line and regulates the reduced pressure used for the nozzles, with the manual drain emptied during shift checks.
Start with the port step: this unit is size 300 with a 1/2 in NPT thread, one step up from the 3/8 in (10) option and one below the 3/4 in (20) - pick the size whose flow curve covers your demand with margin. Choose the drain to match access: manual (as here) is emptied by hand and suits attended installations, while automatic and differential-pressure drains suit unattended duty. The 5 um (W) element is the right call when downstream valves and cylinders need finer air than the 40 um standard element provides.
As a low-pressure (L) type, this regulator is intended for circuits set below the standard range - confirm the working band you need before ordering. The fitted round gauge reads in MPa; psi and bar scales are also available. PT is the standard thread and G or NPT are orderable options - this unit is specified with NPT. If you need the panel or wall fixing, the bracket is included here (omit it with code J). Because flow is published as curves, not a single rated figure, 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 GFR300 as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure and expected air demand and we will confirm the flow figures from the datasheet for this exact configuration before you order.
The manual drain (code M) means condensate is released by hand, which suits attended installations where someone is present at regular intervals. If the unit will sit unattended, the automatic (A) or differential-pressure (blank) drain options remove the need for manual emptying - those are separate orderable configurations in the same 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.