The AirTAC GFR300-15MF2WT 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 GFR300-15MF2WT is a size-300 filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration carries a 1/2 in NPT port, a 5 um filter element for finer contamination capture than the standard 40 um grade, a manual drain for the PC bowl, and an embedded square gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT/G/NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge style and scale, and an optional reverse/check valve. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300-15MF2WT 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 | Standard 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 130 psi). 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)). |
| (blank) | Standard 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) |
Feeds filtered, regulated air to a bench or C-frame pneumatic press, with the 5 um element protecting directional valves and cylinders from fine particulate and the psi gauge letting operators set and verify working pressure.
Serves as the point-of-use filter regulator on packaging and cartoning equipment, combining water and particle removal with stable downstream pressure for sealing jaws, vacuum generators and pick-and-place actuators.
Conditions supply air for pneumatic control panels and valve positioners, where the 5 um grade guards small orifice components and the manual-drain PC bowl is emptied during scheduled maintenance rounds.
Size 300 with a 1/2 in port suits lines whose air demand sits in the mid range of the GFR family; step up to size 400 or 600 for larger porting and flow, or down to size 200 for compact circuits. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. The 5 um element (code W) is the right choice where finer particulate protection matters; the standard grade is 40 um. The manual drain needs periodic operator attention, unlike the automatic or differential-pressure drain options. The square gauge is fitted here reading in psi; MPa and bar scales and an external round gauge are alternatives. Thread is NPT as ordered, with PT standard and G available. A mounting bracket is included.
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 GFR300 series as curves rather than a single rated figure, so no single number would be honest to quote. Send us your line pressure and air demand and we will confirm the flow from the datasheet for your application on request.
The W in the code sets the 5 um filter grade, one step finer than the 40 um standard, which suits valves, cylinders and instruments that need cleaner air. The M sets a manual drain, so the PC bowl must be drained by hand at intervals; automatic and differential-pressure drains are available on other codes if you prefer unattended drainage.
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.