Factory direct sale ductile iron flanged adjustable pressure relief valve manual safety high water regulating valve

Adjustable pressure relief valve with manual safety/high water level regulation for direct nodular cast iron flange from the manufacturer It has good strength and corrosion resistance, thanks to its ductile iron material. Key Features: 1. Convenient and flexible, with adjustable relief pressure as needed. High water level regulation can precisely adjust the water level and guarantee the system safety. Flange connection is easy to install, economical and applicable to the respective water system.