The AirTAC GFR300C15MC3T AirTAC Filter Regulator 1/2 NPT 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 See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR300C15MC3T is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration has a 1/2 in NPT port, a manual drain on a polycarbonate bowl, a 40 um standard filter element, and a round pressure gauge reading in bar. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and the unit takes a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include automatic or manual drains, a 5 um (W) filter element, embedded square or external round gauges with MPa, psi or bar scales, G or NPT threads in place of the PT standard, and low-pressure or check-valve variants. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C15MC3T AirTAC Filter Regulator 1/2 NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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 0.15 - 0.9 MPa (20 - 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding clean, regulated air to the directional valves and pneumatic clamps of a CNC machining cell, where the manual drain lets an operator bleed off collected water at the start of each shift.
Conditioning the supply to the cylinders that divert, clamp and eject packs on a bottling or food packaging conveyor line, with the bar-scale gauge giving operators a clear local pressure check.
Filtering and regulating the air feeding a laboratory automation rig or test bench, where the round gauge and manual drain support straightforward setup and daily checks.
Size and port are the first choice: 200, 300, 400 and 600 step up in port size and flow capacity, and this unit sits at size 300 with a 1/2 in NPT port. Because flow is published as curves rather than a single rated figure, send us your air demand and working pressure and we will confirm sizing against the datasheet before you order. The remaining choices are all decodable: drain type (manual here; automatic and differential-pressure drains are available), filter grade (40 um standard, 5 um with code W), gauge type and scale (this unit carries a round gauge reading in bar; embedded square gauges with MPa, psi or bar scales are options), thread (PT is the AirTAC standard and G and NPT are order options), and bracket (included here).
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, not as a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the datasheet curve figures for this size-300, 1/2 in NPT unit on request.
This model has a manual drain: an operator opens it to discharge the water and dirt collected in the polycarbonate bowl. AirTAC also offers automatic and differential-pressure drains on GFR units, and the 40 um element can be specified as a 5 um (W) grade at order time.
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.