It's a good idea to add this vacuum damper (also known as a "snubber") to the vacuum controller if your vacuum pump pulls more than 4 CFM. This will minimize on/off sputtering by the vacuum controller at the end of a charge cycle and potentially increase the life of the vacuum pump and the vacuum controller.

Thread size is 1/8" NPT on both sides, so it fits our vacuum controller very well.

WARNING: This product can expose you to chemicals, including lead, which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.