Let $A$ be a Krull ring. According to Theorem 12.3 in Matsumura's *Commutative Ring Theory*, the family of localizations of $A$ at height 1 prime ideals of $A$ forms a defining family of $A$. 

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> Question: Why such family exists? In other words, why does a Krull ring have at least one height 1 prime ideal?
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Remark: By definition a Krull ring is the intersection of DVRs and each DVR has dimension 1, hence its maximal ideal has height 1. However, if we contract this maximal ideal to $A$, it is not necessary that the prime ideal we get will have height 1.

Edit: I realized that the definition of a Krull ring given in Wikipedia is quite different from the one given in Matsumura. In fact, the Wikipedia definition trivially answers my question. Matsumura's definition is: an integral domain is called Krull if it is the intersection of a family of DVRs and every non-zero element in the domain is non-zero in only a finite number of corresponding discrete valuations. How to obtain that such a ring contains a height 1 ideal is not obvious to me.