Purpose of Main Valve Installation:
●Installed in transmission and distribution pipelines.
●Function: Maintains pressure stability and safety of the water supply system.
Pressure Sustaining Function:
●Maintains the inlet (upstream) pressure of the main valve at or above the preset value.
●Prevents upstream pressure drops caused by high downstream water demand.
●Ensures stable water supply to upstream service areas.
Pressure Reducing Function:
●Controls the outlet (downstream) pressure of the main valve to be at or below the preset value.
●Stabilizes supply pressure and prevents damage to downstream equipment.
●Automatically reduces high pressure to the required lower pressure.
Applications of Pressure Sustaining and Pressure Reducing Valves: