This Volute Back is designed for use with Vico, Ultima, Ultima Plus, and Ultra Flo pumps in 3HP and 4HP configurations. It is slightly different from the standard volute back used in lower horsepower models—refer to the details below to confirm compatibility.
This part is secured to the main pump body using four nuts and bolts through bolt holes on 1/2-inch x 1/2-inch extensions from the volute and body. It also features four short extensions with brass threaded inserts for mounting to the motor, ensuring a secure and precise fit.
Details:
- Compatible With: Vico, Ultima, Ultima Plus, and Ultra Flo pumps (3HP and 4HP models only)
- Outside Diameter: 5-7/8-inch
- Front to Back Depth: 1-1/2-inch (2-1/16-inch including extensions)
- Inside Center Diameter: 5-1/16-inch
- Shaft Seal Opening Diameter: 1-3/8-inch
- Mounting Insert Distance (Center-to-Center): Slightly under 3-3/4-inch
- Mounting Hardware: 4 nuts and bolts (through brass inserts)
