FixVault

Check Valve

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
VALVE SPECIFICATION

G04876662Courtesy of NISSAN MOTOR CO., U.S.A.
 
Vacuum leakage when connected to booster side (1) [at vacuum of - 66.7 kPa (- 500 mmHg, - 19.69 inHg] Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
Vacuum leakage when connected to engine side (2) No vacuum will be applied.