AirTAC GF300-08 Filter (GF30008AJ)
The AirTAC AirTAC GF300-08 Filter (GF30008AJ) is a genuine G-series air filter. It separates condensed water and filters particulate from the compressed-air line through a 40 µm element, with PT1/4" ports and a automatic drain. A filter does not set downstream pressure — pair it with a GR regulator, or use a GFR filter regulator, when pressure control is needed.
- TypeAir filter
- Port sizePT1/4"
- Filtering grade40 µm
- DrainAutomatic drain
- Inlet pressure0.15 - 1.0 MPa (22 - 145 psi)
- Bowl materialPC
- ThreadPT
- BracketSupplied without bracket
- 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 GF300-08 Filter (GF30008AJ)
The AirTAC GF30008AJ is a G-series compressed-air filter that removes water and particulate only - no regulation, no lubrication. It is a size 300 unit with a 1/4 in PT port, a 40 um standard element and an automatic drain, and the J in the code means the mounting bracket is omitted, so it is meant for in-line or panel-integrated mounting where a bracket is not wanted. The polycarbonate bowl is standard for this non-600 size; working pressure is 1.0 MPa (145 psi) over a -5 to 70 C range.
This is a genuine AirTAC part. The same size 300 family is available in 200/300/400/600 sizes, with bracket included or omitted, differential-pressure, automatic or manual drain, a 5 um W element option, and G (BSPP) or NPT threads as alternatives to PT. Flow is published only as curves, so we will confirm the datasheet and flow figures for your application on request.
AirTAC GF300-08 Filter (GF30008AJ) Technical Specifications
| Model | AirTAC GF300-08 Filter (GF30008AJ) |
|---|---|
| Series | GF300 air filter |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 40 µm |
| Drain type | Automatic drain |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Inlet pressure | 0.15 - 1.0 MPa (22 - 145 psi) |
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Bowl material | PC |
| Feature | Low pressure loss |
Specifications follow the official AirTAC G-series air-preparation data. The inlet-pressure band is set by the drain type: automatic and differential-pressure drains run 0.15 - 1.0 MPa, a manual drain runs 0 - 0.9 MPa. 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 GF300-08 Filter (GF30008AJ)
| GF300 | G-series air filter, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain. Options are differential (blank), automatic (A) or manual (M). |
| J | Supplied without bracket. A bracket ships by default; J orders it without. |
| (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. |
Field order is size, port, drain, bracket, grade, thread — a blank position takes the default. Example: GF300-10AJW is a 300 body, PT3/8", automatic drain, no bracket, 5 µm element, PT thread.
Size Class
- GF200PT1/8" - PT1/4"
- GF300PT1/4" - PT1/2"
- GF400PT3/8" - PT1/2"
- GF600PT3/4" - PT1"
A larger body carries a larger port and passes more air at the same pressure drop. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure. The GF600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GF300 · PT1/4" · 40 µm |
|---|---|
| One size down | GF200 |
| One size up | GF400 |
| Line order | Filter first, then regulator, then lubricator |
Where the AirTAC GF300-08 Filter (GF30008AJ) Is Used
Robot cell valve manifold feed
Mounted directly on the valve manifold of a six-axis robot cell, the bracketless in-line body saves panel space while the automatic drain keeps condensate out of the gripper circuits during unattended production.
Trailer air-prep in fleet bays
Installed in the air lines serving commercial-trailer brake-test and door-cylinder rigs in a fleet workshop, it filters shop compressed air, with the automatic drain emptying the bowl between vehicle test cycles.
Lab pneumatic test bench
Fitted on the supply side of a laboratory pneumatic test bench, it removes water and particulate from the air feeding pressure-test fixtures, keeping the bench air clean without a technician stopping to drain the bowl.
Is the AirTAC GF300-08 Filter (GF30008AJ) the Right Filter?
This code differs from GF30008A only in the bracket: J means no bracket is supplied, which suits builders who already panel-mount or clamp the body in line. Keep the size 300 / 1/4 in PT choice matched to your pipe and air demand - we can check the flow curves if you are between sizes 300 and 400. Drain is automatic here; manual and differential-pressure variants exist if you prefer operator control or the catalogue default.
Element grade is the standard 40 um; order the W suffix version for 5 um. Thread is PT as standard, with G (BSPP) and NPT as orderable options. As with the whole series, flow is published as curves rather than a single rating - ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/4" here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain: differential, automatic or manual
- ✓ Manual drain caps inlet at 0.9 MPa
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Bracket needed, or order with J
Installation & Maintenance Notes
- check Mount vertically, bowl down, and follow the airflow arrow.
- check Put the filter first in the air-preparation line.
- check Keep inlet pressure within 0.15 - 1.0 MPa (22 - 145 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Replace the 40 µm element when pressure loss rises.
The PC bowl must not be cleaned with solvents or exposed to synthetic oils that attack polycarbonate — wipe it with a dry cloth. A filter removes water and particulate only; it does not regulate pressure or add lubrication.
AirTAC GF300-08 Filter (GF30008AJ) FAQ
AirTAC does not publish a single rated-flow number for the GF filters - flow is given as performance curves only. Share your operating pressure and required air consumption and we will confirm the flow data from the datasheet for this model on request.
J means the mounting bracket is omitted, so the GF30008AJ is supplied for in-line or panel-integrated mounting instead of bracketed installation. Everything else matches the standard decode: size 300, 1/4 in PT port, 40 um element, automatic drain, and -5 to 70 C operation.
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 GF300-08 Filter (GF30008AJ)
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, availability and lead time — usually within 7-8 hours.