Piston Piston Check Valve - 05 | Brandoni Piston Check Valve - 05 | Brandoni The Piston Check Valve - 05 by Brandoni is a high-quality spring check valve designed with a cast iron body, adhering to stringent product norms and EN ISO 9001 quality standards. Available in flanged versions (DN 50 to DN 300) and threaded versions (DN 50 to DN 100), these valves are ideal for HVAC systems, water treatment and distribution, pump... View Flanged PN 16 DIN EN-GJL-250 EPDM FKM (Viton®) NBR