Airtac GFR Filter Regulator GFR300C08F1K
The AirTAC GFR Filter Regulator GFR300C08F1K 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 GFR300C08F1K
The AirTAC GFR300C08F1K is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, all in one body. This 300-size unit is tapped PT 1/4 in, carries a 40 um standard element, and uses a differential-pressure drain that bleeds condensate automatically as pressure drop across the element builds. The embedded square pressure gauge is scaled in MPa, and the K suffix adds a built-in check valve so downstream pressure is held if the upstream supply drops. Regulation range with the differential-pressure drain is 0.15-0.9 MPa (20-130 psi).
This is a genuine AirTAC part with a maximum working pressure of 1.0 MPa (145 psi) and an operating range of -5 to 70 C, non-freezing. The GFR family is offered in 200, 300, 400 and 600 sizes, with ports from 1/8 to 1 in, G (BSPP) and NPT thread variants, a 5 um element option (W), automatic or manual drains, and alternative gauges. Because flow is published as curves rather than a single rating, we confirm datasheet figures for your application on request.
Airtac GFR Filter Regulator GFR300C08F1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08F1K |
|---|---|
| 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 GFR300C08F1K
| 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 GFR300C08F1K Is Used
Bench punch press air feed
Conditions the air feeding a small pneumatic punch press; the check valve holds the cylinder circuit pressurised if the shop supply dips mid-stroke.
Conveyor gate cylinders
Supplies filtered, regulated air to diverting gates and stoppers on a packaging conveyor, with 40 um filtration ahead of the directional valves.
Pneumatic valve test bench
Gives a test bench steady downstream pressure for leak-checking solenoid valves, with backflow protection when the supply is shut off.
Is the Airtac GFR Filter Regulator GFR300C08F1K the Right Unit?
Step between sizes (200/300/400/600) and ports (1/8 to 1 in) to match the flow your line needs; this 300 size at 1/4 in PT suits general machine air drops. Keep the 40 um element for standard plant air or order the W suffix for 5 um, and choose an automatic or manual drain if you would rather not rely on the differential-pressure drain. The square MPa gauge is standard here; a round external gauge and psi or bar scales are catalogue options, and G (BSPP) or NPT threads can be ordered in place of the PT standard. Flow is published as curves, not 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 GFR300C08F1K FAQ
AirTAC publishes flow for the GFR300 series as curves across inlet pressure, not as a single rated figure, so no one number would be honest. Tell us your inlet pressure and air demand and we will confirm the sizing from the datasheet on request.
It adds a built-in check valve: if upstream supply fails, the valve holds pressure downstream of the regulator. Everything else is unchanged - PT 1/4 in port, 40 um element, differential-pressure drain and the MPa square gauge are all standard GFR300.
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 GFR300C08F1K
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.