Vickers CVCS/CVI Valve Covers & Inserts – Poppet Area Ratios

You can get the ratio by comparing are at the bottom of the poppet. This is an example,

If the top of the poppet is double the size of the bottom, then it is a ratio of 1:2.  You have around three

different ratios; 1:1, 1:2 and 1:1.1. The chart below explains more.

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