As the branch point,non-return valve and pump are usually located close to each other.

As the branch point,non-return valve and pump are usually located close to each other.
As the branch point,non-return valve and pump are usually located close to each other,the pump could still be subject to overheating through the heat conduction via the pipe in some cases.Therefore,it is also conceivable to install the stagnation cooler parallel to the return or together with the expansion tank in the feed,though then possibly with other disadvantages.
很多地方不懂,什么叫As the branch point,install the stagnation cooler parallel to the return,together with the expansion tank in the feed.