PRVs (pressure reducing valve malaysia) guarantee that an adequate and pleasant liquid use pressure is always available. These valves allow pressure from enhanced sources to be controlled to meet application needs. Also, be sure that any components put downstream of the PRV are not subjected to excessive pressure, which might cause damage. As the control element, these mechanical valves use a spring against a diaphragm or piston, making them easy and dependable to operate. In more specialised variants, greater diaphragm diameters give improved sensitivity for lower pressure ranges.
What Is the Function of Pressure Reducing Valves?
PRVs function by changing high water pressure at the valve’s input nozzle to lower pressure at the valve’s exit. The pressure in the mains supply might range from 1 bar to 20 bar or more. It may also vary during periods of increased or decreased consumption in a given location.
Pressure-lowering valves assist to moderate these variable mains pressures, maintaining them at a reasonable level when they might otherwise build up too high. PRVs use a spring-loaded piston and diaphragm combination to reduce incoming water pressure to a constant and controllable level
Water can flow through the valve as long as upstream pressure remains at or below the level specified for downstream pressure. Simply put, the pressure at certain periods will not be sufficient to drive the spring back, thereby closing off the valve. Demand on the output side usually results in a pressure decrease (also known as fall-off pressure), indicating that the valve stays open. This is an illustration of dynamic pressure control.
If the pressure on the intake side begins to surpass the pressure necessary on the exit side, the tension exerted on the valve spring by the user’s dialled-in settings is overcome. As a result of the increased pressure, the diaphragm moves upward, thus shutting the valve.
Why use Pressure Reducing Valve?
Excessive water pressure from a main, tank, or increased supply might cause plumbing damage. Reducing noise during valve and tap shut-offs, such as pounding or slamming. Alternatively, if the supply is feeding appliances with lower pressure ratings (such as showers, washing machines and dishwashers). Increasing the consistency and comfort of flow rates over a wide variety of water usage. In bigger or older structures, helping to manage flow across apartments, levels, and outlet points. This feature is very handy in multi-story structures with gravity-fed or boosted supplies. Providing static pressure management and thereby aiding in the prevention of slow pressure creep under low demand/no-flow conditions.
Many different types of buildings and water systems may benefit from the use of a PRV, especially if the present system is exhibiting indicators of extremely high pressure. These may be found in a standard plumbed water system:
- Inconvenient flow rates from indoor faucets and showers
- When indoor/outdoor taps or valves close, pipes or appliances make hammering sounds.
- Excessive water use during typical use
- Seals, valves, pipelines, and plumbing components leak or deteriorate quickly.