Description: The pump rear cover (pump cover) is a key pressure-retaining, wetted component of the fluoroplastic centrifugal pump. With a metal substrate lined/encapsulated in F46/PTFE alloy, it sits between the pump body and the bracket, mounts and fixes the mechanical seal, and isolates the corrosive medium from the drive end.
Works with the pump body to form the pump chamber, closing the rear of the impeller and creating the medium pressure cavity.
Supports and locates the mechanical-seal stationary ring, providing the seal mounting base, isolating the corrosive medium and preventing it from reaching the bearing-bracket end.
Withstands in-pump medium pressure; bolts fasten the pump body, rear cover, and bracket into one assembly.
Some versions have built-in flush ports that accept flush fluid to protect the mechanical seal.
The internal metal reinforcing substrate carries the wetted contact surface in F46/fluoroplastic alloy; it provides shaft holes, mechanical-seal mounting seats, and bolt through-holes; the medium side is entirely corrosion-resistant fluoroplastic, and the metal substrate does not contact the product.
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