... , can be in triangle valve top adjustment, down a bit, (3) is the role of the switch, if bibcock is leaking, like what ... be very brittle, might break to the pipeline and can't be replaced, copper is easier to change.How to calculate the triangle valve usageThe toilet one ... , water heater, if you only 2 a kitchen a guard need 7, more can only according to the calculation. cold hot water angle valve