How to prevent water hammer, and backup pump setup.
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Question 1: For 3 desulfurization water pumps (200 cubic meters, 35 meters, 45KW-4), if a sudden power outage occurs and backflow takes place, resulting in water hammer, how can pump damage be prevented and how should the valves be operated? Question 2: Three pumps with a capacity of 200 cubic meters each are in use simultaneously, with no downtime allowed. We want to add another backup pump for emergency use; the water flow rate must remain high, at 600 cubic meters per unit time, and the pressure requirements must also be met. How should this setup be arranged? What valves should be used, and how should it be controlled?
Question 1: To prevent water hammer, a check valve should be installed at the outlet. Question two: For four pumps connected in parallel, just use the three pumps that are needed; install valves at the pump outlets so that the pumps can be isolated for maintenance
Thank you for the guidance. The pipeline is made of fiberglass – can a check valve be installed on it?
This depends on whether the valve is available or not
The pipes are made of fiberglass, which poses some difficulties; try to find a check valve of the butterfly type with full lining that allows for gradual opening and closing~~~~ (The cylinders are made from corrosion-resistant materials) & (The fiberglass pipes need to be reinforced in certain areas, with additional support placed at the bottom)