The AirTAC GFR30015MLNTK AirTAC Filter Regulator NPT1/2 Manual Drain is a genuine G-series filter regulator: water separation, 40 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 AirTAC GFR30015MLNTK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/2 in NPT port, a manual drain bowl in polycarbonate, the standard 40 um filter element, and a low-pressure regulator type. A reverse/check valve is fitted, no gauge is supplied, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR filter-regulator range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G or NPT threads. Other options include automatic or differential-pressure drains, a 5 um element (code W) and fitted gauges. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR30015MLNTK AirTAC Filter Regulator NPT1/2 Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Filtered, regulated air holds workpieces in clamping cylinders on a machining centre fixture, with the check valve helping hold the set circuit condition between cycles.
A packaging line uses filtered air to blow dust and moisture off containers before filling; the regulator keeps the jet circuit at the pressure the line was set up for.
Low-pressure air actuates sample-transfer cylinders and purges tubing in an automated lab bench, where clean, particulate-free air protects the sensitive mechanism.
Size this unit by the port and flow step: the 300 size with a 1/2 in NPT port sits in the middle of the GFR range (200/300/400/600), so step up to 400 or 600 if your line draws more air, or down to 200 for compact circuits. Choose the drain: this model is manual drain, meaning someone drains the bowl periodically; automatic or differential-pressure drains suit unattended installations. The 40 um element is the standard grade; specify code W for the 5 um grade where finer filtration is needed. No gauge is fitted on this code; gauges with MPa, psi or bar scales can be ordered. Thread is NPT here, with PT and G available to order, and the bracket is included.
Because this is the low-pressure regulator type and its adjustment range is not published in the material we hold, and because flow is published as curves rather than a single rating, ask us to confirm the adjustment range and 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 application and we will confirm the flow and sizing from the datasheet on request.
The M in the code sets a manual drain: the bowl is drained by hand at intervals. The GFR family also offers automatic (code A) and differential-pressure (blank) drains, which suit installations that are not checked daily. The 40 um element is standard here; the 5 um grade is available as code W.
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.