Le valvole a pedale sono installate all'estremità inferiore del tubo di aspirazione e includono il peso

DDA 17-7 AR-PVC/T/C-F-31I002FG The SMART Digital DDA is a compact positive displacement

La tenuta meccanica è secondo EN 12756

and with a large variety in the number of impellers

tpd 40 270 2 a f a bqqe hw1 98915456 Le valvole a pedale sonoSingle stage, close coupled, volute twin head pump with in line suction and discharge ports of identical diameter. The twin head pump is designed with two parallel power heads. The pump is of the top pull out design, i. e. the power head (motor, pump head and impeller) can be removed for maintenance or service while the pump housing remains in the pipework. Each power head is fitted with an unbalanced rubber bellows seal. The shaft seal is according