Waterway - 1" Air Control Valve Plunger for Waterway Valves - 665-4390

Waterway – 1″ Air Control Valve Plunger for Waterway Valves

This Waterway 1″ air control valve plunger is the small internal component found inside the brand’s 1″ air control valves, such as the 6-Spoke style and the Waterway Classic air control valve, among others. It is listed under part number 665-4390 and is a replacement for the inner part only, so it is not a whole valve.

Compatibility with Waterway 1″ air control valves

The plunger is made for the Waterway 1″ air control valve. The valve styles named for it include:

• the 6-Spoke style
• the Classic style

Other styles of Waterway 1″ air control valve are also covered, as the range is not limited to these two.

It will only fit the Waterway 1″ air control valve. It is not intended for any other valve, so do not use it as a general replacement for air controls from other makes or in other sizes.

How to choose the right plunger

Before ordering a replacement plunger for your hot tub or spa, confirm that your air control is a Waterway valve and that it is the 1″ size. Because the plunger sits inside the valve body, matching the brand and size is the most reliable way to pick the right part.

Waterway lists several numbers for this area of the valve, so check them against what you need:

• Complete assembly: 665-4390 and 665-4398
• Black part: 662-2140

The number 6622140 is the same black part number written without the dash.

Part numbers and what this part is

This page covers the internal plunger component of the valve. The numbers above are the Waterway references you can use when searching for or comparing a replacement air control plunger.

As it is an internal component, it is useful when you want to replace just this part of a Waterway 1″ air control valve rather than looking for a different valve. If you are unsure whether your valve is a match, compare the markings and part numbers on your current valve with the list above.