Cavitation has nothing to do with air. What you are experiencing is probably air entrainment issues. You should first identify the source of leak of air into the pump. Common culprits are flanges, or joints in the suction line or any mechanical damage or hole in pump casing (less likely). Once the leak area is detected, fix it and then re-prime the pump. It should be good to go.
That colored two vane impeller looks cool and I bet that's exactly what the pump industry was looking for; An impeller that does not efficiently use centrifugal force to move water. PLEASE ... think critically and concentrate on what these colors are saying. BLUE - Suction that's great however it's pulling water toward the outer edge of the disk; That is NOT centrifugal force, that is the impeller trying to PULL the water through the impeller. GREEN - Recirculation What the hell is that? It's also NOT centrifugal force, it sounds like a waste of energy. RED - the tail end is at such a slight angle it's trying to PUSH the water out of the pump; THAT IS NOT CENTRIFUGAL FORCE ! ! it's a Blade PUSHING THE WATER OUT. CENTRIFUGAL force is WATER GAINING ENERGY by SPINNING and then the WATER, in and of itself, PULLS itself Out of the rotor, . . . I hate to point it out, but Tesla turbines used as pumps DO NOT CAVITATE and if they did, the collapsing bubbles would do little damage because the impeller blades never harshly impact the fluid. Maybe one of you can explain to me why disk impellers are not used in modern pumping applications. Thank you for your great videos and I truly hope you can set me straight on this disk type impeller thinking.
very in-depth webinar! thank you well done!
Excellent Webinar, very useful information.
Glad it was helpful!
hello i have a centrifugal pump suction end pump that is cavitating how can i purge the air bleed the air out of the system .
Cavitation has nothing to do with air. What you are experiencing is probably air entrainment issues.
You should first identify the source of leak of air into the pump. Common culprits are flanges, or joints in the suction line or any mechanical damage or hole in pump casing (less likely).
Once the leak area is detected, fix it and then re-prime the pump. It should be good to go.
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That colored two vane impeller looks cool and I bet that's exactly what the pump industry was looking for; An impeller that does not efficiently use centrifugal force to move water. PLEASE ... think critically and concentrate on what these colors are saying. BLUE - Suction that's great however it's pulling water toward the outer edge of the disk; That is NOT centrifugal force, that is the impeller trying to PULL the water through the impeller. GREEN - Recirculation What the hell is that? It's also NOT centrifugal force, it sounds like a waste of energy. RED - the tail end is at such a slight angle it's trying to PUSH the water out of the pump; THAT IS NOT CENTRIFUGAL FORCE ! ! it's a Blade PUSHING THE WATER OUT. CENTRIFUGAL force is WATER GAINING ENERGY by SPINNING and then the WATER, in and of itself, PULLS itself Out of the rotor, . . . I hate to point it out, but Tesla turbines used as pumps DO NOT CAVITATE and if they did, the collapsing bubbles would do little damage because the impeller blades never harshly impact the fluid. Maybe one of you can explain to me why disk impellers are not used in modern pumping applications. Thank you for your great videos and I truly hope you can set me straight on this disk type impeller thinking.