This standard specifies requirements for materials, informs in vulcanized rubber sea-air-land for: were
1) cold potable water supply (up to 50 ® C);
2) hot potable and non - potable water supply (up to 110 ® C);
(3) drainage, sewerage and rainwater systems, a continuous flow of up to 45 ® C and intermittent flow up to 95 ® C)
Before conducting BS EN 681, it is important to read the - specification. The Standards can be obtained from the appropriate standard authorities.