The AirTAC GFR300C08MC3T AirTAC Filter Regulator NPT1/4, 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 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 GFR300C08MC3T is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is sized for 1/4 in NPT ports, carries a manual drain on the bowl, uses the standard 40 um filter element, and comes with a round pressure gauge reading in bar. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), the unit accepts up to 1.0 MPa (145 psi) inlet pressure, and it operates from -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, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (W) elements, and gauge or no-gauge variants. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and check sizing for your application.
| Model | GFR300C08MC3T AirTAC Filter Regulator NPT1/4, Manual Drain |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feed directional-control valve stacks on form-fill-seal or cartoning machines with filtered, regulated air so spool valves see clean air at a stable set pressure.
Supply gripper and vacuum-generator circuits on robotic handling cells from one compact filter regulator mounted at the cell's air-drop connection.
Regulate air to clamping cylinders and small pneumatic presses on machining fixtures, where a repeatable set pressure protects the workpiece and tooling.
Size 300 with 1/4 in NPT ports suits circuits plumbed at 1/4 in; step down to size 200 or up to 400/600 if your demand differs - we confirm flow against the published curves before you order. The M in this code means a manual drain, so the bowl must be bled by hand periodically; choose an automatic-drain version where the unit is hard to reach. The 40 um element is the standard grade; specify W for 5 um where finer particulate removal matters. The fitted round gauge reads in bar; an embedded square gauge and MPa or psi scales are the alternatives. PT is the standard thread and G or NPT are order options.
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, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your application details and we will confirm the datasheet figures and check the size-300 unit against your air demand before you order.
The M in the code means the bowl drain is operated by hand: collected water must be bled off periodically. If the unit will sit in a hard-to-reach spot, order an automatic-drain version instead - differential-pressure drain is the catalogue default, and the regulation range differs slightly by drain type (0.05-0.9 MPa with manual drain, 0.15-0.9 MPa with automatic or differential-pressure drain).
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.