Non return valve designed to operate under fluid pressure with female sleeve end to slip over outside ends of a discharge pipe ( alternatively , a flanged series is also available ) . The intake end of the valve must be of appropriate diameter in order to be fitted on the discharge pipe end and the other end must have a “duckbill” sleeve to allow only outward fluid flow . The flexible body must be made of fabric reinforced rubber having a EPDM coating to prevent the deteriorating action of UV rays from the sun ( other types of rubbers are available ) . The valve must have stainless steel clamps to secure it around pipe ends .
Qualità certificata e garantita
