The Model K520 Combination Pressure Reducingand Pressure SustainingValve automatically perform two independent functions.It maintains aconstant downsteam pressure,regarlles offluctuating demand and sustainsthe upstream pressure to a pre-determined minimu.
Category: Pressuresustaining andreducing Valve K520
Thepressure reducing pilot responds to slight variations in downstreampresure and immediately repositionsthemain valve to maintainthe desireddownstream pessure.The pressure sustaining pilot isnormallyheldopen bythe upstream pressure,and close when the pressure drop to the set point.
This valve usually usedin lower elevation pipelineto guaranteeprior use ohigher elevation area.