Airtac GFR Filter Regulator GFR300C08AJN
The AirTAC GFR Filter Regulator GFR300C08AJN 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 GFR300C08AJN
GFR300C08AJN is an AirTAC GFR filter regulator: a 300-size unit that removes water and particulate from compressed air and holds downstream pressure in one body. The N suffix in this configuration means no pressure gauge is fitted, which suits installations that already read pressure elsewhere on the panel. It carries a 1/4 in PT port, the standard 40 um filter element, and an automatic drain that clears collected condensate without operator attention. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range with automatic drain is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C. The bowl is polycarbonate at this size; code J means no mounting bracket is supplied.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) elements, gauge options with MPa, psi or bar scales, G/NPT thread options, and an optional bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm datasheet values for your application before ordering.
Airtac GFR Filter Regulator GFR300C08AJN Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AJN |
|---|---|
| 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 GFR300C08AJN
| 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 GFR300C08AJN Is Used
Conveyor sorter actuation
Feeds diverters, stoppers and pusher cylinders along a distribution-centre sorter, where pressure is read at the main panel and the automatic drain handles condensate around the clock.
Trailer-build assembly station
Conditions air at dedicated drops on a trailer assembly line, supplying impact tools and clamp fixtures with regulated 40 um-filtered air while line pressure is monitored centrally.
Bottling-line rinse and eject
Supplies air-blast nozzles and bottle-handling actuators on a bottling line, with the automatic drain keeping the bowl clear in the wet environment of the filler hall.
Is the Airtac GFR Filter Regulator GFR300C08AJN the Right Unit?
This configuration is the 300-size body with a 1/4 in PT port, automatic drain and standard 40 um element, ordered without a gauge and without a bracket. Choose the no-gauge N variant when a panel meter or another unit's gauge already shows line pressure; otherwise the same body is available with an embedded square gauge or an external round gauge in MPa, psi or bar scales. If finer protection is needed, the W suffix selects a 5 um element, and manual or differential-pressure drains are the alternatives to the automatic drain fitted here. G (BSPP) and NPT threads are catalogue options to order alongside PT.
AirTAC publishes flow only as curves, not as a single rated number, so send us your flow and pressure requirements and we will confirm sizing from the datasheet 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 GFR300C08AJN FAQ
AirTAC publishes flow for this series as curves rather than one rated number, so we cannot honestly quote a single figure. Send us your flow and working pressure and we will confirm the sizing from the datasheet on request.
Yes. N at the end of this code means no gauge is fitted, but the same GFR300 body is catalogued with an embedded square gauge or an external round gauge, selectable in MPa, psi or bar scales. Drain type, filter grade, bracket and G or NPT threads are also orderable choices.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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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 GFR300C08AJN
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.