The AirTAC GFR300C08MC1T 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 GFR300C08MC1T is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration is sized for a 1/4 in NPT port, drains by hand via the manual drain, carries the standard 40 um filter element, and comes with a round pressure gauge reading in MPa. The standard regulator covers a 0.05-0.9 MPa (7-130 psi) setting range, maximum inlet pressure is 1.0 MPa (145 psi), operating temperature is -5 to 70 C (non-freezing), and 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 can be ordered with automatic or differential-pressure drains, a 5 um element (code W), G (BSPP) or NPT threads in place of PT, alternative gauge scales in psi or bar, and an optional reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR300C08MC1T 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) |
Feeds clean, regulated air to the clamps, tool changer and pneumatic actuators on a CNC cell; the 40 um element keeps water and pipe scale out of the valves while the regulator holds a steady setpoint at the machine drop.
Supplies filtered, regulated air to the cylinders and diverters along a bottling line; the manual drain lets an operator bleed accumulated water at the start and end of each shift.
Point-of-use filter regulator at a spray-gun drop in a paint booth: the 40 um element removes water and particulate from the shop air line and the regulator sets a stable gun supply pressure.
Match the size to the port step your air supply uses: this is a size 300 unit with a 1/4 in NPT port, and larger sizes carry larger ports and more flow, though flow is published only as curves rather than one rated figure. Drain options are manual (this unit), automatic, or differential-pressure; manual suits installations where an operator can bleed the bowl regularly, and the manual-drain version carries the wider 0.05-0.9 MPa (7-130 psi) setting range. The 40 um element is standard and a 5 um element (code W) is available where finer filtration is needed. The fitted round gauge reads in MPa; psi and bar scales are order options. PT is the standard thread and G (BSPP) or NPT are catalogue order options, as is the bracket. Ask us to confirm sizing against the flow curve for 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 filter-regulator flow as curves, not as a single rated figure, so we do not quote a number. Send us your application details and we will confirm the flow and datasheet figures for this unit on request.
Manual drain means accumulated water is released by operating the drain by hand, which suits lines an operator visits regularly. The same GFR300 size can be ordered with an automatic or a differential-pressure drain instead; the manual-drain version also carries the wider 0.05-0.9 MPa (7-130 psi) setting range.
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.