1. Installation position: The balance valve can be installed on the water supply pipeline or on the return pipeline (only one installation is required in each loop). For the primary loop side of the thermal station, in order to facilitate balance adjustment, it is recommended to install the balancing valve on the return pipe with a lower water temperature. The balance valve on the main pipe should be installed after the multi-stage centrifugal pump of the water supply main pipe (downstream of the multi-stage centrifugal pump) to prevent cavitation of the multistage centrifugal pump due to the low pressure before the multistage centrifugal pump (after the valve).
2. As far as possible installed on the straight pipe section: Because the balance valve has a flow metering function, in order to stabilize the flow before and after flowing through the valve, to ensure the measurement accuracy, the balance valve should be installed in the straight pipe section as far as possible.
3. Pay attention to the balance between the new system and the original system: When the new system with the balancing valve is connected to the original heating (cold) pipe network, it is necessary to pay attention to the balance between the new system and the original system, so as to avoid the balance. The new system (or retrofit system) of the valve has a higher water resistance than the original system and does not reach the water flow it deserves.
4. The balance valve opening should not be changed arbitrarily: after the pipe network system is installed and the test conditions are met, all the balance valves are debugged and set using special intelligent instruments, and the opening degree of each valve is locked to make the pipe network realize the hydraulic working condition. balance. During the normal operation of the pipe network system, the opening of the balancing valve should not be arbitrarily changed, and in particular, the opening locking device should not be changed.
5. It is no longer necessary to install the shut-off valve: when repairing a certain loop, the balance valve on the loop can be closed. At this time, the balance valve acts as a cut-off valve to intercept the water flow, and then returns to the original locked position after the repair is completed. Therefore, if a balancing valve is installed, it is no longer necessary to install a shut-off valve.
6. When the system adds (or cancels) the loop, it should be re-commissioned and adjusted: when adding (or canceling) the loop in the pipe network system, in addition to increasing (or closing) the corresponding balancing valve, in principle all newly established The balancing valve and the balancing valve in the original system loop should be re-commissioned and set (the branch balancing valve in the original loop does not have to be re-adjusted).
