Rupes In-Line Air Regulator
The Rupes® 9P03.060 In-Line Air Regulator is nice. Upon spinning one open & closed to adjust the airflow to my Rupes LD30 De-Nibber, I immediately ordered up a batch for sale!
It requires 1-3/4 turns to fully open or close, making it very easy to dial in the exact amount of air flow for any tool. Four air tunnels inside the regulator provide steady and consistent airflow to the tool.
It can be used with tools that either have a built-in regulator that is overly finicky, or with tools that do not have a built-in regulator at all.
Build quality is superb; the 9P03.060 features a chrome plated steel body, black anozided aluminum adjustment tumbler, and an o-ring thread seal. Thread size is typical 1/4" NPT male and female (if you're using a ruler to measure, the diameter is approximately 1/2" across).