The GEMÜ R480, R481, R487 and R488 butterfly valves now have an NSF/ANSI/CAN 61 certification and a DVGW (German Technical and Scientific Association for Gas and Water) certification. Both approvals certify that the products from the Ingelfingen-based valve specialist GEMÜ are suitable for use in drinking water applications. <!—-> For GEMÜ R480, R481, R487 and […]