The PRV is usually fitted where the incoming water supply enters a building.
it controls the pressure
no
To regulate the pressure to a pre-determined amount.
The water pressure regulator controlling the head pressure is typically installed near the main water supply line. It is usually placed after the main shut off valve and before branching off to different fixtures in the house. This ensures a consistent and regulated water pressure throughout the plumbing system.
Logic valves serve as a multifunctional valve for controlling the direction, flow and pressure by controlling the pressure signals in a hydraulic system, at the same time providing protection to the hydraulic pump.
A water pressure valve replacement is necessary when the valve is malfunctioning or not regulating water pressure properly, which can lead to issues such as low water pressure or damage to plumbing fixtures.
A pressure valve is usually installed on water systems to prevent excess water pressure from destroying fixtures or other plumbing components. When the pressure exceeds the valve ratings the valve opens and releases water/pressure from the line.
When the pressure becomes erratic time to replace
By a pressure regulating valve- or regulator.
no
It is built into the oil pump.
Pressure reducing valve reduces the pressure of fluid upto a predetermined pressure in this case downstream pressure will be obviously lower than upstream pressure but in case of pressure regulating valve it will regulate the pressure( either increase or decrease) depending on the requirement of system at that time.