Vacuum Check Valve: Testing and Inspection

(a) Connect the MITYVAC (Hand-Held Vacuum Pump) to port S of the VCV.
(b) Plug port Z completely with fingers.





(c) Perform pumping 3 times and apply vacuum as shown in the illustration.
(d) Stop the performing pumping and check the indicated value of the MITYVAC after about 10 seconds.

Standard value: 15 - 24kPa
(112 - 180 mmHg, 4.4 - 7.1 in.Hg)

If the indicated value is not as specified, replace the VCV.