AirTAC GFR300-08 Filter Regulator (GFR30008AJNK)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) 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 PT1/4" ports, a automatic 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 sizePT1/4"
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainAutomatic drain
- Bowl materialPC
- Pressure gaugeNot fitted
- 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 (GFR30008AJNK)
GFR30008AJNK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. This configuration has a 1/4 in PT port, an automatic drain that removes collected condensate from the polycarbonate bowl without manual attention, the standard 40 um filter element, no gauge fitted, and a reverse (check) valve included in the code. Maximum inlet pressure is 1.0 MPa (145 psi); with the automatic drain the regulator adjustment range is 0.15-0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The G-series is offered in 200, 300, 400 and 600 sizes with a choice of drain types, 40 um or 5 um elements, gauge options, bracket options and PT, G or NPT threads. Because flow is published as curves rather than a single rating, we confirm sizing and any datasheet figure on request.
AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| Reflux valve | Fitted (reverse flow permitted) |
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 GFR300-08 Filter Regulator (GFR30008AJNK)
| 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". |
| A | Drain: Automatic 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. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (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. |
| K | Reverse-flow (reflux) valve fitted. |
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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Where the AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) Is Used
Packaging machine air prep
Point-of-use filtration and regulation on the supply line feeding a carton-sealing or wrapping machine's cylinders, with automatic draining so the bowl stays clear across long shifts without operator attention.
Pneumatic clamping on workholding fixtures
Regulating supply pressure to clamp cylinders on a machining fixture while the 40 um element keeps mill-scale and pipe debris out of the clamping valves.
Conveyor divert and stopper lines
Conditioning air for diverters, stoppers and pusher cylinders on a distribution conveyor, where the check valve helps keep the regulated circuit isolated from upstream supply dips.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) the Right Unit?
The 300 size with a 1/4 in PT port suits mid-range pneumatic circuits; step up to 400/600 or down to 200 as your port and flow needs change. The automatic drain in this code suits unmanned or hard-to-reach installations; choose manual or differential-pressure drain if you prefer operator-controlled or load-linked draining. The 40 um element is the standard grade; order the W variant for 5 um when finer particulate protection matters. The N in the code means no gauge is fitted; gauges and scales can be selected on related variants. Thread is PT as standard, with G and NPT available as catalogue options, and the J code specifies no bracket. AirTAC publishes flow as curves, not a single rated figure, so ask us to confirm sizing against your application 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 0.15 - 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC GFR300-08 Filter Regulator (GFR30008AJNK) FAQ
AirTAC publishes G-series flow performance as curves, not a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm sizing from the datasheet on request.
This code carries an automatic drain, which ejects collected condensate without an operator. The alternatives are a manual drain you operate yourself or the differential-pressure drain, which is the default and reacts to the pressure drop across the element.
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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 GFR300-08 Filter Regulator (GFR30008AJNK)
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.