The AirTAC GFR30015MLNWTK 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 GFR30015MLNWTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is the size 300 unit with 1/2 in NPT ports, the fine 5 um filter element (code W) instead of the standard 40 um, a manual drain on the bowl, the low-pressure regulator type, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. No gauge is fitted (code N), so add your own if a visual set-point is needed, and the mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with a choice of PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, gauge options and a low-pressure regulator type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30015MLNWTK 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 clean, regulated air to a machining centre's clamping and tool-change circuits, where the 5 um element protects precision valves from fine particulate and the check valve holds clamp pressure during an air loss event.
Supplying the cylinder and actuator circuits on a carton packaging line, with regulated pressure for consistent sealing force and manual bowl draining during scheduled changeover and cleaning.
Conditioning branch air drops in a textile mill, where the fine 5 um grade keeps lint-laden, wet compressed air from fouling low-pressure control circuits on loom auxiliary equipment.
Step up or down through the GFR sizes (200, 300, 400, 600) against the port and flow your line needs; this unit is size 300 on 1/2 in NPT ports. Choose the drain to match access: manual (as here) suits attended installations where an operator drains the PC bowl on a schedule, while automatic or differential-pressure drains suit unattended duty. Pick the 5 um element (this unit) when downstream valves or instruments need finer filtration than the standard 40 um. The low-pressure regulator type is intended for circuits set at the lower end of the range - confirm the exact set-pressure window with us. Thread is NPT here; PT is the catalogue standard and G is also available. Gauge is omitted (code N) and can be specified on other variants; a bracket is included.
Because flow is published as curves and not a single rating, 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 figure, so we do not quote a number here. Send us your application details and we will confirm the flow data from the datasheet and check the sizing against your requirement before you order.
The M in the code sets a manual drain, so the PC bowl is emptied by hand on a maintenance schedule rather than automatically, and the N sets no gauge, so a set-point indicator must come from your own panel or a variant ordered with a gauge. The code also sets the 5 um element, low-pressure regulator type, NPT thread and a built-in reverse/check valve.
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.