Airtac GFR Filter Regulator GFR300C08AF1WK
The AirTAC GFR Filter Regulator GFR300C08AF1WK 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 GFR300C08AF1WK
The AirTAC GFR series filters water and particulate from compressed air and regulates downstream pressure in one body. This 300-size unit has a 1/4in PT port, a 5 um element finer than the standard 40 um grade, an automatic drain, and the embedded square gauge reading in MPa across the 0.15-0.9 MPa (20-130 psi) regulation range. The K option adds an integral reverse (check) valve that permits flow in one direction and blocks reverse flow through the unit. Maximum inlet pressure is 1.0 MPa (145 psi); the polycarbonate bowl suits -5 to 70 C.
This is a genuine AirTAC part. The G-series runs from 200 to 600 sizes with 1/8in to 1in ports, 40 um or 5 um elements, differential-pressure, automatic or manual drains, PT, G or NPT threads, MPa, psi or bar gauge scales, optional brackets, and the K check-valve option shown here. Flow is published only as curves, so we confirm datasheet and sizing figures on request.
Airtac GFR Filter Regulator GFR300C08AF1WK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AF1WK |
|---|---|
| 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 GFR300C08AF1WK
| 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 GFR300C08AF1WK Is Used
Hold-down circuits on a pneumatic press
Regulated, finely filtered air to press hold-down clamps, with the built-in check valve stopping downstream air from being pushed back through the unit if the upstream supply dips.
Fixture clamps in a robotic welding cell
One 1/4in body filters, regulates and holds the clamp-air circuit, so the embedded MPa gauge shows the setpoint while the 5 um element helps protect clamp valve seats.
Air supply to laboratory test rigs
Where a bench rig must keep its set pressure, the check-valve version with an automatic drain and MPa-reading square gauge gives filtered, regulated, backflow-protected air in a single unit.
Is the Airtac GFR Filter Regulator GFR300C08AF1WK the Right Unit?
Pick the size and port step (200 to 600; here 1/4in PT on the 300 body) against the air your circuit consumes. This version pairs the 5 um element with the automatic drain for fine, unattended filtration, and the K option is the one to specify when reverse flow through the unit must be prevented. Alternative drain types, the 40 um grade, gauge scales in MPa, psi or bar, and G or NPT threads are catalogue options; PT is the standard thread. Flow is published as curves rather than a single rating, so 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 GFR300C08AF1WK FAQ
AirTAC states filter-regulator performance as flow curves, not one rated figure, so no single number is quoted here. Send us your application details and we will confirm the datasheet flow data and check the 300 size with the 1/4in port for your duty on request.
K means a reverse (check) valve is fitted, allowing flow in one direction and blocking reverse flow through the unit. The same regulator without the K code is identical apart from having no check valve, keeping the same 1/4in port, 5 um element, automatic drain and MPa gauge.
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 GFR300C08AF1WK
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.