Airtac GFR Filter Regulator GFR300C08AJNWK
The AirTAC GFR Filter Regulator GFR300C08AJNWK 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 GFR300C08AJNWK
GFR300C08AJNWK is an AirTAC G-series filter regulator combining filtration and pressure regulation in one 300-size body for compressed air. This build has PT (1/4 in) ports, an automatic drain on the PC bowl, the optional 5 um element (W) for finer filtration, and a reverse (check) valve that holds downstream pressure through supply interruptions. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating range is -5 to 70 C. No gauge or bracket is fitted.
It is a genuine AirTAC part from the GFR range, which covers 200 to 600 size with G(BSPP) and NPT thread options, manual and differential-pressure drain variants, and gauge and bracket choices. Flow is published as curves rather than a single rated figure, so we confirm the flow and datasheet figures for your application on request.
Airtac GFR Filter Regulator GFR300C08AJNWK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AJNWK |
|---|---|
| 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 GFR300C08AJNWK
| 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 GFR300C08AJNWK Is Used
Punch press tooling
Filtered, regulated air runs the clamp-and-strike cylinders of a punch press die, with the check valve holding tooling position if the plant main drops.
Cable winding tension stations
Regulated air operates the dancer-arm cylinders and brakes on a cable winding line, where cleaner 5 um air suits the fine control valves in the loop.
Bottling line air knives
The unit feeds regulated, filtered air to the air-knife nozzles that dry bottles before filling, with the automatic drain clearing condensate between batches.
Is the Airtac GFR Filter Regulator GFR300C08AJNWK the Right Unit?
This code pairs the two most common upgrades: the 5 um element for finer filtration and the K check valve for pressure hold-up when supply dips - suited to circuits where both air quality and momentary retention matter. Port is 1/4 in PT on the 300 size; move to 200, 400 or 600 to match your demand, and remember flow is published as curves, not a single rating, so let us confirm sizing before you order. Drain is automatic, with manual and differential-pressure variants available; thread is PT as standard with G(BSPP) and NPT as orderable options. Bracket and gauge are omitted on this build.
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 GFR300C08AJNWK FAQ
There is no single rated flow figure to quote: AirTAC publishes G-series flow as curves only. Send us your application pressure and air demand and we will confirm sizing from the curves and share the datasheet on request.
W gives 5 um filtration for finer protection of downstream components, while K adds a check valve that keeps the regulated pressure in place through upstream dips or shutdowns. Together they suit clamping, actuator retention and similar circuits; codes without W or K serve general duty.
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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 GFR300C08AJNWK
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.