OPW Engineered Systems
OPW Engineered Systems has been manufacturing Sight Flow Indicators for over 60 years. Our experience has led to many innovations in design and manufacturing, making VISI-FLO the most thoroughly-engineered Sight Flow Indicator on the market. Flow Controls, Inc. has been a distributor for OPW Engineered Systems since 1990.
- Visi-Flo Sight Flow Indicators
- Propeller, Bi-Directional Flapper or Plain & Drip Tube Design
- NPT & Flanged Designs In Sizes 1/4" To 12"