Your newborn has been hearing sounds since way back in the womb. Mother's heartbeat, the gurgles of her digestive system, and even the sounds of her voice and the voices of other family members are part of a baby's world before birth. Once your baby is born, the sounds of the outside world come in loud and clear.
Series DBV Brass Ball Valve. Full Port, Economical, 600 psi (41 bar) Series DBV Brass Ball Valve is an economical hand lever ball valve ideal for commercial or general industrial use. The Series DBV is the ideal choice for a manual shut off valve, along with many other applications. Valve body, body cap and ball are made of a quality brass for great durability. Seats and stem packing are constructed of PTFE for long lasting service as well.
In modern plumbing, a drain-waste-vent (or DWV) is part of a system that removes sewage and greywater from a building, and regulates air pressure in the waste-system pipes to aid free flow.WV systems maintain neutral air pressure in the drains, allowing free flow of water and sewage down drains and through waste pipes by gravity. It is critical that a sufficient downward slope be maintained throughout, to keep liquids and entrained solids flowing freely towards the main drain from the building.