Pressure Relief / Sustaining Valve

Purpose of Main Valve Installation:

●Installed in transmission and distribution pipelines.

●Function: Maintains pressure stability and safety of the water supply system.

Pressure Relief Function:

●Protects the system from excessive pressure.

●Automatically opens to relieve pressure when it exceeds the preset value.

●Prevents damage to pipelines, pumps, and equipment.

●Automatically closes once the pressure returns to normal.

Typical Applications of Pressure Relief Valves:

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.

Typical Applications of Pressure Sustaining Valves: