Airtac GFR Filter Regulator GFR300C08MNW
The AirTAC GFR Filter Regulator GFR300C08MNW 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.
- TypeFilter regulator
- Port sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GFR Filter Regulator GFR300C08MNW
The AirTAC GFR series combines compressed-air filtration and pressure regulation in one body: a drain bowl removes water and particulate, then a reducing valve sets the working pressure downstream. This 300-size unit is ordered with a PT 1/4 in port, a manual drain (open the drain under the polycarbonate bowl to discharge water), the W fine-filtration option (5 um instead of the standard 40 um), and no gauge. Maximum inlet pressure is 1.0 MPa (145 psi); with the manual drain, the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
It is a genuine AirTAC part and includes a mounting bracket. The G series spans sizes 200 to 600 (ports 1/8 to 1 in), with a choice of manual, automatic or differential-pressure drains, 40 um or 5 um elements, optional gauges, and PT, G or NPT threads; GFC and GC combination sets add lubrication. Flow is published as curves, not a single rating, so we confirm datasheet figures on request.
Airtac GFR Filter Regulator GFR300C08MNW Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MNW |
|---|---|
| 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.
Model Code: Airtac GFR Filter Regulator GFR300C08MNW
| 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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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) |
Where the Airtac GFR Filter Regulator GFR300C08MNW Is Used
Spray booth gun supply
Mounted at the drop feeding spray guns in a finishing booth, the 5 um element delivers cleaner air than the standard grade while the regulator sets gun supply pressure.
Pilot valve and positioner feed
Installed ahead of pilot-controlled valves and positioners on a process skid, it removes water and fine particulate and holds the set pressure the pilot stages expect.
Pick-and-place manifold feed
Fitted upstream of the valve manifold on a pick-and-place module, it keeps condensate off the solenoid valves and lets engineers set cylinder pressure station by station.
Is the Airtac GFR Filter Regulator GFR300C08MNW the Right Unit?
The 300 size with 1/4 in PT port suits general machine drop points; step to 200 for compact circuits or to 400/600 where larger ports and more flow are needed. The M drain code means water is released by hand when convenient - choose the differential-pressure default or the A automatic option where unattended drainage matters.
The W element filters to 5 um against the 40 um standard, the choice to make when downstream spray equipment, pilot valves or instruments want cleaner air. No gauge is fitted (N); gauge variants on MPa, psi or bar scales exist in this size. Thread is PT as standard with G and NPT options. Since flow appears only as curves, ask us to confirm sizing before ordering.
Quick checklist
- ✓ Body size for your peak flow (See datasheet here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR Filter Regulator GFR300C08MNW FAQ
Flow for the G series is published as performance curves, not a single rated figure, so we do not quote a number here. Share your application details and we will confirm the datasheet curve data on request before you order.
The W in this code orders 5 um filtration instead of the 40 um standard. Choose it when downstream equipment such as spray guns, piloted instruments or precision valves needs cleaner air; bowl, drain and port options stay the same within size 300.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C08MNW
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.