Airtac GFR Filter Regulator GFR300C08MJNW
The AirTAC GFR Filter Regulator GFR300C08MJNW 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 GFR300C08MJNW
GFR300C08MJNW is an AirTAC GFR-series filter regulator: filtration plus pressure regulation in one body with a drain bowl, and no lubricator. This configuration is sized 300 with a PT1/4 (1/4 inch) port, carries the fine 5 um filter element (code W) and has a manual drain. The code's J and N mean it is supplied without a mounting bracket or pressure gauge, and no reverse valve is fitted.
It is a genuine AirTAC part for compressed air only, rated to 1.0 MPa (145 psi) maximum inlet pressure, -5 to 70 C (non-freezing), with a polycarbonate bowl at size 300. With manual drain, the outlet pressure setting range is 0.05-0.9 MPa (7-130 psi). The GFR family spans sizes 200/300/400/600 with 1/8 to 1 inch ports; flow is published as curves rather than a single rated figure, so we confirm datasheet figures on request.
Airtac GFR Filter Regulator GFR300C08MJNW Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MJNW |
|---|---|
| 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 GFR300C08MJNW
| 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 GFR300C08MJNW Is Used
Spray finishing in a paint booth
Supplies the spray-gun line on a finishing bench, where the 5 um element is specified for finer filtration and the regulator sets the gun pressure.
Pneumatic control panel on an injection moulding press
Regulates pilot air to directional valves and timers in the machine control panel, with the fine element specified for the small-orifice components downstream.
Instrument air to actuated process valves
Provides adjusted air to positioners and pilot solenoids on automated process valves, with the manual drain bled during scheduled operator rounds.
Is the Airtac GFR Filter Regulator GFR300C08MJNW the Right Unit?
The 300 size with its PT1/4 port covers mid-range duties in the GFR line-up; move to 200/400/600 as the required flow dictates, and let us confirm sizing against the published curves before ordering. The W in the code selects the 5 um element instead of the standard 40 um - the right pick where finer particulate removal matters. Manual drain (code M) keeps the setting range wide at 0.05-0.9 MPa (7-130 psi); automatic (A) and differential-pressure (blank) drains are alternatives in the family. No gauge or bracket is included (both are options), PT is the standard thread with G and NPT orderable, and no reverse valve is fitted.
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 GFR300C08MJNW FAQ
Flow for the GFR300 is published as curves rather than a single rated figure, so we do not state one number on this page. Share your working pressure and consumption and we will confirm the correct size from the datasheet on request.
40 um is the standard filtration grade; the W in GFR300C08MJNW selects the optional 5 um element for finer particulate removal. The rest of the code decodes as 300 size, PT1/4 port, manual drain (0.05-0.9 MPa setting range), no gauge and no bracket.
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Genuine AirTAC parts produced by AirTAC factory.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C08MJNW
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.