The AirTAC GFR300-08MC1T 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 PT1/4" 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 GFR300-08MC1T is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has 1/4 in NPT ports, a manual drain bowl in polycarbonate, a 40 um standard filter element, a standard regulator with a 0.05-0.9 MPa (7-130 psi) adjustment range, and a round pressure gauge with an MPa scale fitted. The manual drain lets you bleed collected condensate by hand as part of routine checks.
This is a genuine AirTAC part from the G-series air-treatment range, which spans 200, 300, 400 and 600 sizes with a choice of PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, and gauge options. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR300-08MC1T AirTAC Filter Regulator NPT1/4, Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 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 — round, 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. 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. |
|---|---|
| 08 | Port size PT1/4". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, regulated air to the pneumatic clamps and tool-change cylinders on a CNC cell, with the gauge giving the operator a direct pressure readout at the machine.
Sits at the drop point on a carton-sealing or labelling conveyor, cleaning the air and holding a steady set pressure for the diverters and pushers along the line.
Prepares the air feeding pneumatic control valves on a process skid, protecting the actuators from water and debris while the operator sets the required working pressure.
Size 300 with 1/4 in NPT ports suits typical machine supply lines; step up to 400 or 600 if your line needs more flow capacity, or down to 200 for compact circuits. This unit has a manual drain, so condensate is emptied by hand - choose automatic or differential-pressure drain codes if you want unattended draining. The 40 um element is the standard grade; order the W variant for 5 um filtration. The round gauge reads in MPa (psi and bar scales are also available), and the mounting bracket is included. PT is the standard thread; G and NPT are catalogue options ordered by code. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering.
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 we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure and the air demand of your application and we will confirm the sizing from the datasheet on request.
The M in the code means the polycarbonate bowl is emptied by hand rather than automatically. Manual drain suits installations that are checked regularly; if the unit is mounted in an inaccessible spot or runs unattended, the automatic (A) or differential-pressure (blank) drain codes are the better choice.
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.