For self-priming Pressure Controller For Borehole Pumps, each self-priming pump should be equipped with a separate suction pipe, and the length and fittings of the suction pipe of the self-priming pump should be minimized to reduce the head loss of the suction pipe. When the unit in the pump station When there are a large number of units or the suction well is far away from the pumping station, multiple pumps can be used to suck water from the common suction pipe.

One gate valve is installed on each suction pipe, and two gate valves are installed on the public suction pipe. Install a gate valve nearby. When the two gate valves are closed, the water is led to the pump by the two suction pipes respectively. When operating under other conditions, open one of the two gate valves. If one of the gate valves needs to be repaired, one suction pipe will supply 2 pumps. When setting up a common suction pipe, the suction main pipe should be in a positive pressure state. Under normal circumstances, in order to ensure safe water supply,

two main water delivery pipes are usually set (when there is a large-volume highland pool in the water supply system, only one can be set), and the number of pumps in the pumping station is often more than 2-3. . For this reason, it must be considered that when a water mains fails and needs to be repaired or the working water pump fails to use the standby water pump to send water,

the water can be delivered to the user. For pumping stations with high water supply safety requirements, the layout of the outlet pipes of the self-priming pumps must meet: 1. Any pump and gate valve can be disabled for maintenance without affecting the work of other pumps. 2. Each water pump can deliver water to any water delivery pipe.

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