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1, the installation position The balance valve can be installed in the water supply pipe, can also be installed in the return pipe (each loop only need to install one). For the loop side of the thermal station, it is recommended that the counterbalance valve be installed on the return line with a lower water temperature for the purpose of balanced adjustment. Balance valve on the main pipe should be installed in the water supply pipe pump (downstream of the pump), to prevent the pump before (after the valve) the pressure is too low, the pump cavitation may occur. 2, try to install in the straight pipe section As the counterbalance valve has a flow measurement function, in order to flow through the valve before and after the stable, to ensure measurement accuracy, conditions permitting should try to install the balance valve at the straight pipe section. 3, pay attention to the new system and the balance of the original system When installing a new balance valve system connected to the original heating (cold) pipe network, we must pay attention to the new system and the balance of the original system of water distribution to avoid the installation of the balance valve Of the new system (or retrofit system) water resistance than the original system, but not due to the water flow. As shown in Figure 5, (a) the new system is connected to the end of the original system; (b) For the new system to be connected to the center of the original system, a counterbalance valve should be provided at the entrance to the original system. 4, should not be free to change the balance valve opening Pipe network system installation is complete, and have the test conditions, the use of special intelligent instruments to debug all the balance valve setting, and the valve opening of the lock, so that the network to achieve balance of hydraulic conditions . In the normal operation of the pipe network system, should not be free to change the balance valve opening, in particular, should not change the opening degree of locking device. 5, no longer need to install the globe valve In the maintenance of a loop, the balance valve on the loop can be closed, this time the balance valve to stop the flow of water cut off the role of the valve, after the repair and then back to the original locked position. Therefore, the installation of the balance valve, you no longer have to install the globe valve. 6. When the system adds (or cancels) the loop, it should be re-tuned. When adding (or canceling) the loop in the pipe network system, in principle, all new balances should be added except the corresponding balance valve should be added (or closed) Valves and the balance valve in the original system loop should be re-commissioning (the original balance valve in the branch loop does not need to be re-adjusted).