Main drain sucks from bottom-as long as its under water its ok to run and have the returns just shoot water down into shallow pool.
i have to drain out 4800 cusec of water
The key word is "drain", meaning it works by gravity, so a drain value should be at the lowest point in the system. Typically there is one just past the meter. If a lawn irrigation system is a branch of the main system it should have its' own drain valve for winterizing it. You can purchase stop valves (or shutoff valves) with built-in drain or bleeder valves.
Drain valves are not designed to mist. They are designed to evacuate liquid that is still in the line after the water is turned off. A manufacturer in Arizona (AmFog Nozzle Technologies) has information on their website for drain valves and misting nozzles; their YouTube videos also explain how the drain valves and misting nozzles work.
there are valves on bilge pumps so that if there are traces of oil in the bilge water, the valves will close so that the oily water will not be discharged overboard. The valves are required to be screw down non-return valved
Yes, there are check valves specifically designed for washing machines. These valves prevent backflow of water, ensuring that the water flows only in one direction and preventing any potential leaks or contamination from the drain. They are typically installed in the water supply line or the drain hose to maintain proper water flow during the washing cycle. Always consult the manufacturer's guidelines for compatibility and installation instructions.
Water Jetting ,snaking depending on what the stoppage is
Is this a sand filter? How many valves control the flow of water? It appears the b/w valve is defective.
Not unless the drain and or tub is full of water and you have no heat on or it gets below freezing in the house.
A "return drain" in reality would be called a return fitting . It's the one where the filterer, heated water goes back to the pool thus RETURN. Main Drain is that grate looking device at the deep end of the pool on the bottom where water is sucked from the pool and sent to the pump - the part of the equipment with the motor and clear lid. The filter - sometimes wrongly referred to as the pump - is the large round or vertically rectangular shaped tank. You need both. k
Your question seems too easy as it is a basic requirement of pool cleaning. However: Attach your vacuum head to your side outlet (unscrew the cover in the side of the pool) using a floating hose. turn off the valves to the bottom drain and the skimmers, leave the pump setting on filtration, fill the hose with water and turn on the pump. After vacuuming the bottom of the pool, switch off pump and return valves to previous setting. be sure to backwash the filter after cleaning if required.
A pool pump plumbing diagram typically consists of a pump, filter, heater, and various pipes and valves that connect them together. The pump draws water from the pool through a skimmer and main drain, then pushes it through the filter to remove debris. The filtered water is then heated by the heater before returning to the pool through return lines. Valves are used to control the flow of water and direct it to different components as needed.
To drain a roof water tank, first, ensure that the water supply is turned off and any necessary valves are closed. Next, connect a hose to the tank's drain outlet, directing the other end to a suitable drainage area. Open the drain valve to allow the water to flow out, and monitor the process to avoid overflow. Once drained, clean the tank if needed before closing the valve and disconnecting the hose.