Replace matching nth occurence

Shell Programming and Scripting
1

Hi
for eg my file has:

val1 | val2 | val1 | val2 | val1 | val2 | val1 | val2 |

here i need to replace '|' with '|\n' where the occurence of '|' is divisble by 2
so that the output comes like this
val1 | val2 |
val1 | val2 |
val1 | val2 |
val1 | val2 |

Requesting suggestions in awk or sed

2

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