What is the suction lift of a centrifugal pump + siphon tank? How to calculate

If the pump’s net positive suction head is 5 meters, can it draw water up to 10 meters with a vacuum tank?

The siphon tank is merely a coolant circulation device for the mechanical seal, and it has nothing to do with the suction power of the pump.

You are referring to the 52, 53A models; he is talking about the negative pressure water intake tank installed at the pump inlet

This post was last edited by pzhmotor on 2018-8-6 at 11:01. The purpose of adding a \"vacuum water intake tank\" is to allow new water to be drawn into the tank under the negative pressure in the enclosed space, as the water inside the tank is pumped out. Therefore, a centrifugal pump (even one without a suction lift, which has no direct relation to the net positive suction head) combined with a siphon tank (vacuum water intake tank), as long as air tightness is maintained, can achieve a maximum suction lift of one atmosphere of pressure, which is approximately 10.34 meters. Guessing: If I need a pump with a suction height of around 10 meters (the maximum suction height for common commercially available self-priming pumps is roughly this much), and if I want to ensure an adequate water inflow rate along with a proper pump flow rate while minimizing power consumption, I would make the inlet pipe relatively thick, as well as the vacuum water intake tank – whose capacity is about twice that of the inlet pipe

If the pump’s net positive suction head is 5 meters, can it draw water up to 10 meters with the addition of a vacuum tank? I’ve heard of it for the first time

I’ll try to find a small pump to test it with! ! :)