Airtac GFR Filter Regulator GFR300C08JC1WK
The AirTAC GFR Filter Regulator GFR300C08JC1WK 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 GFR300C08JC1WK
The AirTAC GFR series combines filtration and pressure regulation in one body. In this configuration, air passes through a drain bowl that strips water and 5 um particulate (the W code) before reaching the regulator, which adjusts downstream pressure across 0.15-0.9 MPa (20-130 psi) with the differential-pressure drain fitted. This 300-size unit is ported PT1/4, carries a round external pressure gauge scaled in MPa, and includes a reverse (check) valve so downstream pressure is held if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the 300-size bowl is polycarbonate, and service is -5 to 70 C. The J suffix means no mounting bracket is included.
This is a genuine AirTAC part. The G series spans 200, 300, 400 and 600 sizes with ports from PT1/8 to PT1, G (BSPP) or NPT threads, 40 um standard or 5 um (W) filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, and bracket options. Rated flow for GFR units is published as curves rather than one figure; ask us to confirm sizing and datasheet figures for your application.
Airtac GFR Filter Regulator GFR300C08JC1WK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08JC1WK |
|---|---|
| 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 GFR300C08JC1WK
| 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 GFR300C08JC1WK Is Used
Clutch/brake circuit on a press
On a mechanical press safety circuit, the 5 um element and regulator condition the air to the clutch-brake valves, and the check valve holds the set pressure at the valves if the plant main is momentarily lost.
Wire-drawing take-up spooler
On a wire-drawing line, filtered and regulated air runs the take-up spooler's pneumatic tension brake; the check valve keeps brake pressure stable during compressor unload cycles, so tension stays even on the spool.
Trailer brake-test rig
In a commercial-vehicle workshop, this unit supplies the trailer brake-test bench, filtering fine dirt from workshop air and holding regulated test pressure via the check valve while the technician walks the rig.
Is the Airtac GFR Filter Regulator GFR300C08JC1WK the Right Unit?
Pick the 300 size when your demand sits between the compact 200 and the higher-flow 400; this unit is ported PT1/4, with 3/8" and 1/2" ports available in the same family. The W code gives you the 5 um element instead of the 40 um standard, and the K code adds the reverse/check valve that keeps downstream pressure when supply is interrupted. The differential-pressure drain opens as the element loads; choose automatic (A) for heavy condensate or manual (M) for controlled draining. The round gauge reads in MPa, with psi or bar scales orderable. Thread is PT as standard, with G (BSPP) and NPT as catalogue options, and the J code omits the optional bracket. Because flow is published as curves rather than a single rated figure, send us your demand and we will confirm sizing before you order.
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 GFR300C08JC1WK FAQ
AirTAC publishes flow for G-series units as performance curves rather than a single rated figure, so we will not quote a number here. Share your supply pressure and air demand and we will confirm the flow from the datasheet and check the sizing against your application before you order.
The differential-pressure drain opens on its own only once enough condensate has collected to create a set pressure drop across the element. If your air is very wet and the bowl would overflow between drops, choose the automatic drain (A); if you prefer to drain on a fixed schedule, choose manual (M).
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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 GFR Filter Regulator GFR300C08JC1WK
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.