Airtac GFR Filter Regulator GFR300C08MJF1
The AirTAC GFR Filter Regulator GFR300C08MJF1 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 GFR300C08MJF1
GFR300C08MJF1 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), the standard 40 um filter element, and the square 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 on MPa, psi or bar scales, 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 GFR300C08MJF1 Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MJF1 |
|---|---|
| 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 GFR300C08MJF1
| 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 GFR300C08MJF1 Is Used
Workshop drop-line point-of-use
Installed at the wall drop on a maintenance workshop bench, cleaning and regulating plant air before it reaches hand tools and blow guns.
Conveyor diverter control
Regulates air to the diverter and stopper cylinders along a conveyor line, with the drain cleared by hand during scheduled checks.
Machine tool air preparation
Feeds filtered, regulated air to the pneumatic circuits of a machine tool at the machine inlet, ahead of its valve and cylinder bank.
Is the Airtac GFR Filter Regulator GFR300C08MJF1 the Right Unit?
The 300 size with its 1/4 inch PT port is the mid-range G-series step; size up to 400 or 600 where demand is higher. The F1 suffix specifies the square gauge on the MPa scale, which is the standard embedded-gauge configuration; round gauges and psi or bar scales are order options if you prefer them. The manual drain suits attended installations with periodic bowl bleeding and allows adjustment from 0.05 MPa (7-130 psi), below the 0.15 MPa floor of automatic and differential-drain versions. The standard 40 um element covers general plant air. Thread is PT as standard with G (BSPP) and NPT to order, 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 GFR300C08MJF1 FAQ
AirTAC publishes flow for the GFR300 as curves rather than a single rated figure, so no rated flow is stated here. Tell us your line pressure and consumption and we will confirm the datasheet curve, and whether the 300, 400 or 600 size fits, before you order.
On the G-series, manual-drain units adjust over 0.05-0.9 MPa (7-130 psi), while automatic and differential-pressure drain versions start at 0.15 MPa (20-130 psi). All versions share the same 1.0 MPa (145 psi) maximum inlet pressure, so the drain choice affects the low end of the setting range.
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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.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C08MJF1
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.