Labels:book | hakham | mountain | poster | sky | trade name OCR: There are Two Types of Flush Valves 1.Diaphragm types: 30- 80 psi range of operation Discharge varies 30% over range Diaphragm material variations cause variations in discharge curve There are two types of flush valves: Diaphragm operated and Piston operated Diaphragm valves have been most common prior to the 1.6 gpf requirement. Their discharge however 15 quite inconsistent over the range of pressures they are exposed to This means that at some pressures they may have discharge curve which 15 compatible with given bowl and at other pressures they may you meet the bowl needs In addition because of the material variations in different diaphragms, 1t 1S common 01 find two valves of the same make and model with widely varying discharge curves Prev Next commor
