Airtac GFR Filter Regulator GFR300C08MJF1WK
The AirTAC GFR Filter Regulator GFR300C08MJF1WK 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 GFR300C08MJF1WK
The AirTAC GFR300C08MJF1WK is a G-series filter regulator: filtration and pressure regulation in one body, with no lubricator. This PT1/4 version is the size 300 frame, has a manual drain on its polycarbonate bowl, a 5 um element (the W option, finer than the 40 um standard), an embedded square pressure gauge with MPa scale, and a reverse (check) valve fitted so downstream pressure is held if the supply drops. The bracket position is J, so it is supplied without a mounting bracket.
For this manual-drain version the regulator adjustment range is 0.05-0.9 MPa (7-130 psi), the maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature is -5 to 70 C (non-freezing). It is a genuine AirTAC part from the G series, which spans size 200 to 600 in ports from 1/8 to 1 inch, with a choice of drain types, filter grades, gauge options and PT, G (BSPP) or NPT threads. Flow is published as curves, so ask us and we will confirm the datasheet for your application.
Airtac GFR Filter Regulator GFR300C08MJF1WK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MJF1WK |
|---|---|
| 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 GFR300C08MJF1WK
| 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 GFR300C08MJF1WK Is Used
Robotic deburring spindle air supply
Feeding the air motor of a deburring spindle on a robot finishing cell: the 5 um element keeps fine particles out of the motor, and the check valve holds the set pressure through brief supply dips so the cycle is not interrupted.
Palletizer gripper cylinders
Supplying the gripper and pusher cylinders of a palletizing machine: condensate and rust are collected before the valves, and the regulator holds a steady handling pressure with the check valve guarding against backflow on supply loss.
Pilot air header on a pneumatic control skid
A point-of-use drop off a pilot air header feeding solenoid valves and actuators: the 5 um element protects the pilot seats, and the manual drain suits a routinely inspected utility cabinet.
Is the Airtac GFR Filter Regulator GFR300C08MJF1WK the Right Unit?
Start with air demand: size 300 on a PT1/4 port is the mid frame; upsize to 400 or 600 for heavier lines, or to size 200 for light duty. Drain type: M here is manual drainage, best at routinely attended points; A is automatic and the blank position is differential-pressure. W selects the 5 um element for finer filtration than the 40 um standard. The K means a check valve is fitted - useful where a brief supply loss must not dump the regulated circuit. Thread can be PT (standard), G (BSPP) or NPT, and a bracket is optional (J means none here).
Flow is published as curves rather than a single rating, so send us your flow and pressure targets and we will confirm sizing against the datasheet before you order.
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 GFR300C08MJF1WK FAQ
AirTAC publishes G-series flow as curves, not as a single rated figure, so we do not quote a one-line number. Give us your downstream pressure and expected consumption and we will confirm the sizing from the datasheet on request before you order.
W selects the 5 um filter element instead of the 40 um standard grade, and K means a reverse (check) valve is fitted so downstream pressure is held if the upstream supply fails. The rest decodes as size 300, PT1/4 port, manual drain, no bracket, and an embedded square MPa gauge.
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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 GFR300C08MJF1WK
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.