He aha te pātai ki: "He papu diaphragm (i mohiotia hoki he papu membrane, Air Whakahaerehia Double papu diaphragm (AODD) ranei Pneumatic papu diaphragm) ko te papu whakangao pai e whakamahi ana i te huinga o te mahi reciprocating o te rapa, thermoplastic te teflon papu me nga piha e tika ana i nga taha e rua o te papu (tihi peera, piha peera, piha piha, tetahi atu momo piha kati-tu) ki te papu i te wai. "? Ko te kaupapa ko te papu Diaphragm.
"He pēhea te mahi a te Pump Diaphragm?"