Airtac GFR Filter Regulator GFR300C08JN
The AirTAC GFR Filter Regulator GFR300C08JN 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 GFR300C08JN
The AirTAC GFR300C08JN is a combined filter regulator that removes water and particulate from compressed air and holds a set downstream pressure in one body. It is a size 300 unit with a 1/4 in PT port, a standard 40 um element, a differential-pressure drain and the standard regulator type. The N suffix means no pressure gauge is fitted, and the bracket is included for panel or wall mounting. Maximum inlet pressure is 1.0 MPa (145 psi); the adjustment range with differential-pressure drain is 0.15-0.9 MPa (20-130 psi). The polycarbonate bowl is rated for -5 to 70 C (non-freezing) air.
This is a genuine AirTAC part. The G series offers sizes 200, 300, 400 and 600, with optional built-in or external round gauges in MPa, psi or bar scale, automatic or manual drains, a 5 um element, reverse valve, and G (BSPP) or NPT threads in the catalogue. Flow is published as curves, not a single rating, so we confirm datasheet and sizing figures on request.
Airtac GFR Filter Regulator GFR300C08JN Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08JN |
|---|---|
| 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 GFR300C08JN
| 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 GFR300C08JN Is Used
Trailer air-knife unloading systems
Filtering and regulating the air feed to air-knife or blower-assist unloading setups, where pressure is set once and monitored elsewhere.
Maintenance shop air drops
Conditioning 1/4 in bench drops in a maintenance shop, supplying clean regulated air to impact tools, blow guns and test rigs without a local gauge.
Control cabinet pneumatic subsystem
Mounted on the included bracket inside a machine cabinet, feeding clean regulated air to the pneumatic section of a control subsystem where a panel gauge already reads pressure.
Is the Airtac GFR Filter Regulator GFR300C08JN the Right Unit?
This is the lean configuration: 1/4 in PT port, 300 body, 40 um element, differential-pressure drain, no gauge, bracket included. Choose it when you already read pressure elsewhere on the line or set it once and leave it. Add the gauge option if you want local reading (square embedded or external round in MPa, psi or bar), a W-code for 5 um filtration, an automatic or manual drain, G or NPT threads, or a larger body for more flow.
Because flow is published only as curves with no single rated figure, ask us to confirm sizing against your application before ordering.
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 GFR300C08JN FAQ
AirTAC does not publish a single rated flow for the GFR300; the data is given as flow curves. Tell us your line pressure and demand and we will confirm the datasheet curve and check the sizing on request before you order.
Yes. The N suffix means no pressure gauge is fitted, which suits installations that read pressure elsewhere on the line. If you want local indication, the same unit is available with the embedded square gauge or an external round gauge in MPa, psi or bar scale.
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 GFR300C08JN
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.