AirTAC GFR300-08 Filter Regulator (GFR30008MC3W)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008MC3W) is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 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 sizePT1/4"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Filtering grade5 µm
- DrainManual 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 GFR300-08 Filter Regulator (GFR30008MC3W)
The AirTAC GFR30008MC3W is a G-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single compact body. This configuration is the 300 size with a PT1/4 (Rc 1/4) port, a 5 um filter element (W option) for finer air than the standard 40 um grade, a manual drain bowl you empty by hand, and a round pressure gauge with a bar scale. The polycarbonate bowl suits this 300 frame, and a mounting bracket is included.
This is a genuine AirTAC part. The G-series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus drain, element, gauge and thread options, so you can match the unit to the line. Flow is published as curves rather than a single rated figure - ask us and we will confirm the datasheet figures for your application.
AirTAC GFR300-08 Filter Regulator (GFR30008MC3W) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008MC3W) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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 0.05 - 0.9 MPa (7 - 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 GFR300-08 Filter Regulator (GFR30008MC3W)
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Where the AirTAC GFR300-08 Filter Regulator (GFR30008MC3W) Is Used
CNC machine tool air supply
Drops 5 um filtered, pressure-regulated air to tool changers, clamps and coolant-air blast circuits on a machining centre, with the bar-scale gauge letting setters verify set pressure at a glance.
Pneumatic control valve panels
Feeds a bank of directional control valves on an automated assembly line, protecting spools from water and fine particles while the manual drain keeps the bowl emptied during scheduled rounds.
Laboratory air lines
Conditions bench air for lab instruments and test rigs that need cleaner-than-standard air (5 um) and a stable, dial-checked pressure from a compact 1/4 inch drop.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008MC3W) the Right Unit?
For sizing, step up or down between sizes 200, 300, 400 and 600 as port and flow demand; the 300 size with a 1/4 inch PT port is the natural fit for compact machine circuits and point-of-use drops. The manual drain (M) suits installations an operator visits routinely; choose automatic or differential-pressure drains where the unit is hard to reach. The W element (5 um) is the pick when downstream valves or instruments want finer air than the standard 40 um grade.
Thread is PT (Rc) as standard; G (BSPP) and NPT are catalogue options to order. Gauges here are round with a bar scale; square embedded gauges and other scales exist in the range. Flow is published as curves, not a single rating, so ask us to confirm sizing against your flow curve before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/4" 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 0.05 - 0.9 MPa (7 - 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 GFR300-08 Filter Regulator (GFR30008MC3W) FAQ
AirTAC publishes flow for this series as curves, not a single rated figure, so there is no one number to quote. Tell us your line pressure and required flow and we will confirm the datasheet curve data for this 300 size before you order.
The M suffix means the bowl is emptied by hand - simple and reliable where an operator passes daily, unlike the automatic or differential-pressure options for unattended sites. The W suffix selects the 5 um element instead of the standard 40 um grade, for finer protection of downstream valves and instruments. The regulator range for this manual-drain version is 0.05-0.9 MPa (7-130 psi).
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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 GFR300-08 Filter Regulator (GFR30008MC3W)
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.