Profile: Norriseal is a supplier of valve and control solutions. Our products are used in a broad range of industries, including oil & gas production, transmission, refining, petrochemical/chemical processing, marine and power generation. We also serve pulp and paper, food and beverage, high-pressure HVAC and steel manufacturing. We are an ISO 9001 certified manufacturer. Our series EVS controllers feature Envirosave™ snap pilots, which prevent fugitive emissions and reduce bleeding of valuable gases. Non-slam piston check valve is designed for positive prevention of back-flow in gas, air or liquid systems.