Airtac GFR Filter Regulator GFR300C08AJNK
The AirTAC GFR Filter Regulator GFR300C08AJNK 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 GFR300C08AJNK
GFR300C08AJNK is an AirTAC G-series filter regulator: filtration and pressure regulation combined in one 300-size body for compressed air. This configuration has PT (1/4 in) ports, an automatic drain that removes condensate from the PC bowl without operator attention, the standard 40 um element, and a reverse (check) valve that holds downstream pressure if the supply is interrupted. 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 pressure gauge is fitted on this build.
It is a genuine AirTAC part. The GFR family runs from 200 to 600 size with G(BSPP) and NPT thread options, 5 um (W) elements, manual and differential-pressure drain variants, plus gauge and bracket options. Flow for this series is published as curves rather than a single rated figure, so we confirm the flow and datasheet details for your application on request.
Airtac GFR Filter Regulator GFR300C08AJNK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AJNK |
|---|---|
| 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 GFR300C08AJNK
| 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 GFR300C08AJNK Is Used
Machining fixture clamping
Filtered, regulated air feeds the clamp cylinders that lock steel workpieces during milling, holding clamp force steady while shop-air main pressure wanders.
Carton sealing line
Regulated air drives the flap-fold and taping cylinders on a packaging conveyor, with the automatic drain clearing condensate through multi-shift runs.
Water treatment valve actuation
Clean, pressure-stable air operates the actuated butterfly and ball valves on a treatment skid, with the check valve holding actuator position through supply dips.
Is the Airtac GFR Filter Regulator GFR300C08AJNK the Right Unit?
Stay in the 300 size with 1/4 in PT ports when your circuit sits in the middle of the GFR range; step to 200 for compact lines or to 400/600 where demand is higher - because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering. Drain type is automatic on this code, with manual and differential-pressure variants available; filtration is the standard 40 um (5 um on W codes). Thread is PT as standard, with G(BSPP) and NPT available as catalogue options. This build omits the bracket and the gauge; other codes in the range add them if you need panel fixing or a local pressure reading.
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 GFR300C08AJNK FAQ
AirTAC publishes G-series flow as curves, not as a single rated figure, so we do not quote a number on the page. Tell us your working pressure and air consumption and we will confirm sizing and send the datasheet on request.
K means a reverse (check) valve is fitted. If upstream air fails, it holds the regulated pressure downstream instead of letting it bleed back through the unit - useful where clamps or cylinders must stay put. Order a code without K if you do not need that holding function.
Authorized Export Seller
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 GFR300C08AJNK
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.