The wedge ring is made as a monolithic cast entirely of ductile cast iron, covered with an excellent anti-corrosion coating based on epoxy resins. This fitting is particularly useful for positioning hydrants in a vertical position.
National Institute of Hygiene in Warsaw
Flanged connection according to PN-EN 1092-2.
Internal and external protection against corrosion with epoxy powder paint RAL 5005 with min. 250um and resistance to breakdown 3kV.