Airtac GFR Filter Regulator GFR300C08MJC1W
The AirTAC GFR Filter Regulator GFR300C08MJC1W 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 GFR300C08MJC1W
GFR300C08MJC1W is an AirTAC G-series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This 300-size unit carries a PT1/4 port, a manual-drain bowl in polycarbonate (PC), a 5 um fine filter element (the W option, instead of the standard 40 um), and an external round pressure gauge on the MPa scale. The J code means the mounting bracket is not supplied. Set point is adjusted over 0.05-0.9 MPa (7-130 psi) on this manual-drain version, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR filter-regulator family is offered in 200, 300, 400 and 600 sizes, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, square or round gauges, and G (BSPP) or NPT thread options alongside the standard PT. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing for your application on request.
Airtac GFR Filter Regulator GFR300C08MJC1W Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MJC1W |
|---|---|
| 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 GFR300C08MJC1W
| 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 GFR300C08MJC1W Is Used
Finishing-booth spray guns
Delivers 5 um-filtered, regulated air to spray guns in a paint booth, where fine particulate and water carryover would spoil the finish.
Laboratory instrument air
Supplies clean, regulated air to pneumatic actuation on laboratory and analytical equipment specified with finer filtration.
Electronics pick-and-place
Regulates air to gripper and vacuum circuits on an electronics assembly line, with 5 um filtration ahead of sensitive components.
Is the Airtac GFR Filter Regulator GFR300C08MJC1W the Right Unit?
The 300 size with a 1/4 inch PT port is the mid-range step in the G-series; move to the 400 or 600 size where demand is heavier. This unit is ordered where downstream equipment calls for 5 um filtration rather than the standard 40 um, so the choice is driven by the sensitivity of the valves, tools or instruments you feed. The manual drain suits installations where an operator can bleed the bowl at set intervals, and the regulator adjusts from 0.05 MPa (7-130 psi). Thread is PT as standard, with G (BSPP) and NPT as order options, and the J code omits the bracket. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application 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 GFR300C08MJC1W FAQ
AirTAC publishes GFR300 flow as curves rather than one rated figure, so we do not state a rated flow. Give us your line pressure and consumption and we will confirm the datasheet curve and whether the 300 size is right before you order.
The blank filter grade is the 40 um standard element for general plant air. The W code on this model specifies the optional 5 um element, used where downstream valves, tools or processes are sensitive to finer contamination. Both grades drain and regulate identically on this family.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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 GFR300C08MJC1W
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.