AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK) is a genuine G-series filter regulator: water separation, 5 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 grade5 µm
- DrainAutomatic 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 (GFR30008AJC1WK)
The GFR30008AJC1WK is a genuine AirTAC GFR-series filter regulator: filtration plus pressure regulation combined in one body. This configuration takes PT1/4 ports, carries the fine 5 um filter element (W suffix), and uses an automatic drain that purges condensate from the polycarbonate (PC) bowl on its own. A reverse/check valve is fitted (K suffix). The regulator adjusts 0.15-0.9 MPa (20-130 psi) in this automatic-drain version, and an external round pressure gauge on a MPa scale is included. Maximum working pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing. No mounting bracket is included with this code (J suffix).
The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, and drain type, filter grade (40 um standard, 5 um W), gauge, reverse valve and thread (PT standard, G/BSPP and NPT as order options) are all decodable choices. Flow appears in the catalogue as curves rather than a single rating, so we confirm datasheet figures on request.
AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 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 | 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 (GFR30008AJC1WK)
| 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. |
| (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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Where the AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK) Is Used
Pilot air for control valve positioners
Filtering and regulating the pilot-air supply to control valve positioners on a process line, where the 5 um element and the fitted check valve suit a circuit that must hold its regulated condition.
Pick-and-place circuits on electronics assembly machines
Conditioning air to compact pick-and-place cylinder circuits on electronics assembly equipment, with fine 5 um filtration ahead of sensitive valve and cylinder internals.
Clutch-brake air supply on machinery
Regulating supply air to clutch-brake circuits on driven machinery, where the fitted reverse/check valve supports the downstream circuit and the MPa gauge documents the set pressure.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008AJC1WK) the Right Unit?
Size by port and demand: 300 gives 1/4 inch porting; move to 400/600 for larger ports or 200 for smaller ones. Drain: automatic here, with manual and differential-pressure alternatives. Element: the W suffix gives the 5 um grade rather than the 40 um standard - choose it for fine-particulate protection. Gauge: external round, MPa scale. The K suffix adds a reverse/check valve to the unit. Thread: PT is standard; G (BSPP) and NPT are catalogue options to order. Bracket: not included with the J suffix. Since rated flow is published as curves rather than a single number, 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 (GFR30008AJC1WK) FAQ
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote a number on the page. Give us your inlet pressure and air demand and we will confirm the sizing from the datasheet on request.
Yes. The C and 1 characters in the code specify an external round pressure gauge on the MPa scale; square-gauge and psi/bar scale alternatives are available in the family if you prefer a different readout.
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Covers non-human-caused product damage.
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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 GFR300-08 Filter Regulator (GFR30008AJC1WK)
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.