Why Choose VEVOR?. Inlet Port: DN25PN10 Flange Connection. Outlet Port: DN25PN10 Flange Connection. A high-quality glyd ring, the double-acting sealing, strengthens air performance. Our self-priming diaphragm pump features an all-bolted polypropylene body and double PTFE diaphragms, sturdy and corrosion-proof, without leakage.
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