
The AirTAC Airtac GAF Filter GAF500N20JW is a genuine compressed-air filter. Its diversion structure spins the air to separate liquid water and trap solid particles down to 5 µm, protecting downstream valves and tools. It has 3/4" ports and a 108 cc drain bowl. It is a filter only — it does not regulate or set pressure.
The GAF500N20JW is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 108 cc nylon bowl, while the 5 um HDPE core traps fine grain. It is not a regulator and carries no gauge, so it cleans the air without ever setting a pressure.
This 3/4in model weighs 680 g and uses a nylon bowl, which is a build choice for the environment rather than a change in the common specification. Its semi-auto and manual drains are both fitted, and the 5 um element suits lines feeding precision valves or instruments.
| Model | Airtac GAF Filter GAF500N20JW |
|---|---|
| Series | GAF500 air filter |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | Nylon |
| Drain type | Semi-auto drain + manual drain |
| Bracket | Not included (J) |
| Fluid | Air |
|---|---|
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 108 cc |
| Element | HDPE filter core |
| Weight | 680 g |
Specifications follow the official AirTAC GAF catalogue (pages 225-226). Air must not freeze in the unit. This is a filter only — it separates water and solid particles but does not set or hold a downstream pressure. To regulate pressure as well, use the matching GAFR500 filter-regulator.
| GAF500 | GA500 series air filter — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| J | No bracket (J) — supplied without the mounting bracket. |
| W | Filtering grade 5 µm. |
| (blank) | PT port thread. |
A GAF has no regulator and no pressure gauge — there is no type, gauge or reflux code. Need to regulate pressure too? The matching GAFR500-20 is the same filter with a built-in regulator.
Figures are the end of the flow curve plotted in the AirTAC catalogue — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. A filter this size drops less pressure at flow than the same-body GAFR filter-regulator, so match it to your peak demand.
| This model | GAF500 · 3/4" · curve to 9000 L/min |
|---|---|
| One size down | GAF400 |
| One size up | GAF600 (curve to 12000 L/min) |
| Add regulation | GAFR500-20 (filter + regulator) |
Feed a 3/4in line to a CNC machine's pneumatic clutch or work-holding circuit, where the 5 um element protects fine metering valves from water and rust particles.
Protect a bank of cylinders on an automotive assembly station, where the 108 cc bowl and semi-auto drain handle condensate between shift checks.
Supply a test bench or gauging fixture that needs cleaner air, using the 5 um element to trap fine grain before it reaches sensitive orifices.
Choose this GAF500 for a 3/4in line where you want the finer 5 um element and the flexibility of both semi-auto and manual draining. The J code means no bracket is included, so plan for a panel mount or an existing support; the nylon bowl and PT thread are fixed on this code. If you also need to set a downstream pressure, step up to the matching GAFR500-20 filter-regulator instead of expecting this filter to regulate. The 108 cc bowl holds about 1.7x the condensate of a GAF400's 100 cc bowl, so you will drain it less often than on the smaller body.
Quick checklist
This is a filter only — it removes water and solid particles but adds no pressure control and no lubrication. Add a GAR regulator, a GAL lubricator, or step up to the GAFR500-20 filter-regulator as your air-prep needs grow.
It is a filter only with a 5 um HDPE element, a 3/4in PT port, and a 108 cc nylon bowl. Working pressure is 0.15-0.9 MPa (20-130 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. The unit weighs 680 g and has both semi-auto and manual drains.
The J code omits the mounting bracket, so you must support the 680 g unit with a panel mount or an existing frame rather than the tubing. The nylon bowl is a material choice for the environment; the common specification is identical to PC or metal bowls, so confirm compatibility for aggressive surroundings without assuming extra chemical or impact resistance.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.