| 摘要 |
Pump-siphon for aggressive liquids, particularly acids, consisting of the body and the suction-forcing-in unit characterised in that inside the body (7), made preferably from plastic, which has, along its whole length, a perforated pipe (8) mounted hermetically with rings (11), to which there is mounted a membrane (9) in the form of a mantle, which functions as a piston made from a material resistant to aggressive liquids, preferably rubber, which is hermetically mounted with the use of a clamping ring (15), where the membrane (9) is located between the body (7) and the perforated pipe (8).<IMAGE>
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