Airtac GFR Filter Regulator GFR300C08AJF1K
The AirTAC GFR Filter Regulator GFR300C08AJF1K 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 GFR300C08AJF1K
GFR300C08AJF1K is an AirTAC GFR filter regulator: a 300-size unit that removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration carries a 1/4 in PT port, an automatic drain that ejects collected condensate without operator attention, the standard 40 um filter element, an embedded square gauge scaled in MPa, and a built-in reverse (check) valve that helps hold downstream pressure when supply is interrupted. 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 polycarbonate bowl suits this 300 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, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) elements, gauge and G/NPT thread options, and an optional bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet values for your application before ordering.
Airtac GFR Filter Regulator GFR300C08AJF1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AJF1K |
|---|---|
| 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 GFR300C08AJF1K
| 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 GFR300C08AJF1K Is Used
Press-line clamping circuit
Feeds clean, regulated air to pneumatic clamp cylinders on a stamping press; the built-in check valve helps the clamps hold their set pressure if shop air is interrupted mid-cycle.
Packaging machine air preparation
Prepares the air supply for sealing jaws, flap-closing cylinders and pick-and-place actuators on a cartoning line, with the automatic drain clearing condensate between shifts.
Pneumatic control cabinet supply
Point-of-entry conditioning for a machine's valve manifold, where the embedded square MPa gauge lets technicians verify the set pressure without opening the cabinet.
Is the Airtac GFR Filter Regulator GFR300C08AJF1K the Right Unit?
This unit is set up with a 1/4 in PT port, automatic drain, 40 um element, square MPa gauge and check valve, with no bracket. If your circuit feeds sensitive valves or instruments downstream, the W suffix version with a 5 um element is the finer choice; 40 um is the standard general-duty grade. Automatic drain suits unmanned or high-condensate duty, while manual and differential-pressure drains are the alternatives within the family. G (BSPP) and NPT threads are catalogue options to order alongside PT, and a bracket can be specified where panel or wall fixing is needed.
AirTAC publishes G-series flow as curves, not as one rated number, so please send us your flow and pressure requirements and we will confirm sizing against 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 GFR300C08AJF1K FAQ
AirTAC publishes G-series flow as characteristic curves rather than a single rated figure, so there is no honest one-number flow rating to quote. Tell us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
K indicates a reverse (check) valve is fitted, which helps hold downstream pressure when the upstream supply drops. This unit also decodes as: 1/4 in PT port, automatic drain, 40 um standard element, square gauge in MPa, and no mounting bracket (J).
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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 GFR300C08AJF1K
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.