The AirTAC GFR30015MLF2WT 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 AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single body, so one 1/2 inch (NPT1/2) connection does both jobs. This unit is the low-pressure type, fitted with a 5 um filter element (code W), a manual drain on the polycarbonate bowl, and an embedded square gauge reading in psi. The manual drain means an operator opens the drain at the bottom of the bowl to discharge collected condensate, which suits installations visited as part of a routine check rather than unattended ones.
This is a genuine AirTAC part from the G series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, filter grades of 40 um standard or 5 um, a choice of drain types, gauge styles and scales, 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 before ordering.
| Model | GFR30015MLF2WT 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 — square, psi 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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) |
Feeding air cylinders and actuators on cartoning or case-packing lines where the regulated pressure band is below what a standard regulator is built for, with the 5 um element protecting directional valves from fine contamination.
Supplying filtered, regulated air to clamp cylinders on a machining or assembly fixture, where the square psi gauge lets the operator verify setting at a glance and the manual drain is emptied during shift checks.
Regulating supply to air knives or blow-off nozzles that clear dust and debris from product on a conveyor, with the 5 um element keeping fine particles out of the nozzles and the manual drain clearing accumulated condensate.
Size 300 with a 1/2 inch port sits in the middle of the G range; step up to size 400 or 600 where the line demands more flow, or down to 200 for compact branch circuits. The 5 um element (code W) is the finer of the two published grades and is the right call where downstream valves and cylinders see finer contamination; the 40 um standard element remains available in the same series. Manual drain suits attended installations; automatic and differential-pressure drain options exist in the family for unattended ones. The square gauge is fitted here reading in psi; MPa and bar scales and an external round gauge are alternatives. This unit is the low-pressure type, so confirm the regulated band you need against the datasheet. Thread is NPT here; PT is the standard and G is also an order option. A mounting bracket is included.
Flow for this series is published as curves, not a single rated figure, so send us your application details and we will confirm sizing from the datasheet 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 this series as curves rather than a single rated figure, so no one number exists to quote. Send us your line pressure, regulated pressure and the equipment you are supplying, and we will confirm the sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: an operator opens the drain at the bottom of the bowl to discharge collected water. AirTAC also offers automatic drain (code A) and differential-pressure drain (blank) on the same series for installations that are not checked regularly. This unit is specified with manual drain and a 5 um element; the 40 um standard grade is the alternative if finer filtration is not required.
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.