TVN V503 Pressure Sustaining Control Valve is designed to fix inlet pressure. When network pressure is over adjustment pressure, valve is opened and inlet pressure is fixed. It fixes the inlet pressure without being affected by surge pressure. Being installed at the end of the filter systems, it ensures productive back wash.
If the value on manometer is below demanded pressure after giving water into the system, inlet pressure is made to increase by rotating adjusting bolt clockwise. If the value on manometer is above demanded pressure, demanded pressure is adjusted by rotating adjusting bolt counterclockwise. After this process, by screwing the luck nut under adjusting bolt, adjusting bolt is fixed.