In certain specific areas such as outdoor applications and corrosive atmospheres, such as coastal installations, there is a need for highsurface protection to prevent failure due to corrosion.Today's food safety standards often call for daily treatment with detergents to protect against bacteria growth, again producing a need for high surface protection.SCA-X SS are check valves with a built-in stop valve function. CHV-X SS are check valves only.The valves are designed to open at very low differential pressures, allow favorable flow conditions and are easy to disassemble forinspection and service.The valve cone has a built-in flexibility to ensure a precise and tight closing towards the valve seat.A well-balanced dampening effect between the piston and the cylinder gives an optimal protection during low loads and againstpulsations.