Airtac GFR Filter Regulator GFR300C10MJNW
The AirTAC Airtac GFR Filter Regulator GFR300C10MJNW 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 GFR300C10MJNW
The GFR300C10MJNW is a 300-size AirTAC filter regulator: filtration and pressure regulation in one body, with a 3/8in PT port as standard (G/BSPP and NPT are orderable thread options). The M code selects a manual drain on the polycarbonate bowl, and the W code selects the 5 um element in place of the 40 um standard, giving finer prefiltration for sensitive downstream equipment. The N code means no pressure gauge is fitted and J means the mounting bracket is not supplied. Supply pressure is rated to 1.0 MPa (145 psi) and, with this manual-drain version, the outlet adjusts from 0.05 to 0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part in the GFR300 series. The G platform runs from 200 to 600 size with ports from 1/8in to 1in, drain choices (differential-pressure, automatic, manual), 40 um or 5 um filtration, gauge and bracket options, and a low-pressure type on request. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
Airtac GFR Filter Regulator GFR300C10MJNW Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C10MJNW |
|---|---|
| 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 GFR300C10MJNW
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C10MJNW Is Used
Analytical instrument air prep in a laboratory
Conditions the supply feeding pneumatic actuators and sample-handling cylinders on lab analysers, using the 5 um element to keep fine debris out of sensitive components.
Spray gun feed at a paint booth
Filters and regulates the air feeding spray guns in a finishing booth, with the 5 um element helping keep water and fine particles out of the finish air.
Workshop air-tool drop
Serves a maintenance-shop drop for air tools and small cylinders, giving one filtered, regulated takeoff point on the 3/8in ring main.
Is the Airtac GFR Filter Regulator GFR300C10MJNW the Right Unit?
Pick the size (200 to 600) to match your port and flow path; 300 with a 3/8in PT port is the mid-range option. Flow is published as curves, not a single rating, so send your demand figures and we will confirm sizing against the datasheet before you order. The W suffix is the reason to choose this unit: the 5 um element suits circuits feeding fine valves, gauges or instruments where the 40 um standard grade is not fine enough. Manual drain suits installations with regular operator checks; automatic or differential-pressure drains suit unattended duty. If a setpoint readout is needed, order a gauge variant (embedded square, or external round, in MPa, psi or bar scales) instead of the N suffix. PT is the standard thread - order G (BSPP) or NPT explicitly - and add a bracket where mounting requires one.
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 GFR300C10MJNW FAQ
Yes, on request. Flow for this series is published as curves rather than a single rated figure, so we do not quote one number. Give us your air demand and we will confirm the datasheet figures and sizing for this 3/8in unit.
Choose the W-coded 5 um element when the downstream equipment is sensitive to fine particles, such as instrument valves, spray equipment or precision cylinders. For general shop-air protection of standard valves and cylinders, the 40 um standard grade is usually sufficient.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
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 GFR300C10MJNW
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.