AirTAC GFR300-08 Filter Regulator (GFR30008C1K)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008C1K) 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 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 sizePT1/4"
- 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 GFR300-08 Filter Regulator (GFR30008C1K)
The AirTAC GFR series provides filtration and regulation in one body: the bowl removes water and particulate while the regulator sets downstream pressure. This GFR30008C1K is size 300 with a 1/4 in PT port, a 40 um standard element, the differential-pressure drain on a PC bowl, an external round gauge on a MPa scale, and a built-in reverse (check) valve that keeps downstream pressure from bleeding back if the supply side drops. Maximum working pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR range covers sizes 200 to 600 with ports from 1/8 in to 1 in, PT (standard), G (BSPP) or NPT threads, three drain options, the 5 um element option (code W), and the reverse-valve option fitted here. Because flow is published as curves rather than a single rating, we confirm sizing and datasheet figures on request.
AirTAC GFR300-08 Filter Regulator (GFR30008C1K) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008C1K) |
|---|---|
| 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa scale |
| 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 (GFR30008C1K)
| 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". |
| (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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 (GFR30008C1K) Is Used
Air cylinder circuits with pressure-hold requirements
Regulates supply to air cylinder circuits where the position or force must be maintained, using the reverse valve to hold downstream pressure during upstream interruptions while the MPa gauge shows the set value.
Pilot-air supply for larger control valves
Filters and regulates the pilot air feeding positioners and pilot stages of larger process valves, keeping supply clean with the 40 um element and holding pilot pressure steady via the check valve if the header dips.
Conveyor line diverters and stops
Supplies regulated air to conveyor diverter gates, stoppers and lifters, where the reverse valve keeps diverted products held in position during a brief plant-air pressure drop and the gauge allows line-side pressure setting.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008C1K) the Right Unit?
Choose the GFR200/300/400/600 size against your port and demand; we will verify the published flow curve for this 1/4 in unit against your application on request. Drain is the differential-pressure default here, with automatic (A) and manual (M) available; regulation range is 0.15-0.9 MPa (20-130 psi) on this drain type. The 40 um element is standard and code W gives 5 um filtration. This code adds the reverse (check) valve (K) for circuits that must hold downstream pressure, plus the external round MPa gauge (C1); square-embedded and gauge-less versions exist. Thread is PT standard with G (BSPP) and NPT options, and a bracket is included unless code J is specified.
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 (GFR30008C1K) FAQ
There is no single rated flow figure to quote: AirTAC publishes G-series capacity as flow curves only. Share your line pressure, set pressure and air demand, and we will confirm the correct size against the datasheet curve on request before you order.
The K adds a reverse (check) valve inside the unit, so downstream pressure is held if the upstream supply fails or drops - useful for clamping and holding circuits. Everything else is identical: 1/4 in PT port, 40 um element, differential-pressure drain, and the round MPa gauge.
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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 (GFR30008C1K)
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.