Ductile iron swing flanged non-return valves with leaver and weight, for non-aggressive liquid, portability and waste water. Nominal pressure rating 16 and 10 bar. Features a fully encapsulated rubber gate. Material – ductile iron ( grade 420/12.) with a durable finished of epoxy coating. Flanges drilled to SABS 1123 (or bs4504) table 10 & 16