(I) scope of application:
Its main function is to check the anti-siphoning performance of the lavatory flushing valve. 
(ii) the instrument meets the standards:
The anti-siphoning test device of flushing valve is mainly designed and manufactured in accordance with CJ/t931-2003 "mechanical toilet flushing valve" standard clause 6.3.4, JG/t3040.2-1997 "toilet flushing device -- hydraulic buffer flushing valve" standard clause 5.3, QB/t3649-1999 "toilet flushing valve" standard 5.5.
(iii) detailed parameters
* design station: single working station
* medium: normal temperature water
* working voltage: ~ 220ACV
* pressure test range: static pressure: -0 ~ 0.1mpa, accuracy 0.5 class.