The AirTAC GFR30015MLJF1WT AirTAC Filter Regulator NPT1/2, 5 um 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 AirTAC GFR300 series combines a filter and a pressure regulator in a single body: compressed air enters, water and particulate are separated out and collected in the polycarbonate bowl, and the regulated outlet feeds the downstream circuit. This unit is the 300 size with 1/2 in NPT ports, the low-pressure regulator type, a 5 um element (code W) instead of the standard 40 um, a manual drain, an embedded square gauge scaled in MPa, and no mounting bracket or reverse/check valve fitted.
It is a genuine AirTAC part. The G-series filter-regulator line runs from size 200 to 600 with ports from 1/8 to 1 in, and with choices of drain type, filter grade, gauge style and scale (MPa, psi or bar), thread (PT standard; G and NPT to order) and bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30015MLJF1WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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 — square, MPa 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". |
| 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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. |
| (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) |
On a welding or assembly fixture, this unit filters the shop air supply to 5 um and holds a steady low-pressure feed to the clamping cylinders, with the embedded MPa gauge letting operators verify the set pressure at a glance.
Mounted at the drop feeding a packaging or cartoning line, it removes water and scale from the compressed-air supply and regulates it before it reaches the line's cylinders and air jets; the manual drain is emptied during scheduled changeovers.
On process skids where air-piloted or actuated valves call for a lower supply pressure than the main header, this filter regulator steps the pressure down at the station while the 5 um element protects the pilot components.
Decode the choices from the code: the 300 size carries 1/2 in ports, and the larger sizes (400, 600) step up in port and flow capacity - but the catalogue publishes flow as curves, not a single rating, so let us confirm sizing against your application before you order. Drain is manual here, meaning the bowl is emptied by hand at intervals; automatic (A) and differential-pressure (default) drains are available where manual attention is not practical. The 5 um element (code W) is the finer option over the standard 40 um. The square gauge is embedded and scaled in MPa; an external round gauge with MPa, psi or bar scale is optional. Thread is NPT on this unit (PT is the standard; G and NPT are order options), and the J code means no mounting bracket is included. As a low-pressure type, its adjustment range differs from the standard version - we confirm the exact range on request.
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 number on the page. Tell us your application and we will confirm the flow and datasheet figures for this exact model on request.
This unit carries the M code, so condensate collected in the polycarbonate bowl is drained by hand at intervals. If the installation is not attended regularly, the same size is available with an automatic drain (code A) or with the differential-pressure drain that is the series default.
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.