Water tank overflow Level control & How surge valve protects pumping station against water hammering.
Overflow of water tanks is a common problem faced in residential, commercial and industrial facilities. Whether it’s a cold water tank or hot water tank overflowing, the issue should be addressed fast to avoid water wastage as well as unnecessary water costs.
The cause most commonly leading to overflow of a residential or industrial cold water storage tank is an erroneous ball valve. This ball valve is responsible for controlling the water level in the cistern through a plastic float sitting on the water surface. As the cistern’s water level rises, a washer is pushed onto valve seating by the float – a plastic nozzle within the valve body. Water flow into the cistern is stopped by this.
Foreign materials like limescale, dirt, grit, or damage to the washer or the valve seating may prevent the water tight seal. General wear & tear may lead to chipping or splitting of the valve seating edges, and cracking or splitting of the washer.
Water hammer is a pressure surge or wave caused when a fluid (usually a liquid but sometimes also a gas) in motion is forced to stop or change direction suddenly (momentum change).