This part of JB/T 2231 specifies the installation dimensions of annular and mesh valves for reciprocating piston compressors. This section applies to annular and mesh air valves (hereinafter referred to as air valves) for reciprocating piston compressors.
JB/T 2231.5-2013 Referenced Document
GB/T 1801-2009 Gemetrical Product Specifications(GPS).Limits and fits.Selection of tolerance zones and fits