Plumbing emergencies are a handful. Another object of the'invention is to provide such a valve in which the hand of the operator need not come in contact with the fluid being drained either in starting or stopping condensate drain valve the flow of fluid, such starting and stopping being achieved by the use of a simple and readily accessible instrument, such as a pencil, piece of wire, short stick, screw driver or other thin elongated instrument.
The simple oil drain valve on an automobile is possibly the least complex, as it consists of only a threaded plug inserted into a corresponding threaded hole in the engine oil pan The plug acts as the valve stem , and it is operated by simply removing the plug from the oil pan.

Drain valves find use in fully automated systems to manual applications. This is usually a sign of a failing water heater or often just the valve. If you live in a climate that freezes, you need to turn off and drain your system or turn off and blow air through the valves and pipes.
Gently unscrew the defective valve, being careful to avoid getting splashed by any leaking hot water. In our opinion, blowing out a large diameter plumbing drain line is not and effective repair. The valve is designed to be installed on a certain height from the bottom of the tank, so there will always be some water left even if you try thoroughly to drain the unit.
Manual: Manual drains are valves that are opened manually to dump condensation. If the issue is a faulty drain valve, you most certainly will have water. After any work on your condensate drain system, the drainage of the sink and tub should be observed. As to discharge of condensate generated from an air compressor, problems of high air loss and high oil content have been identified, which leads to energy loss and environmental problems.

1 is a vertical section through the bottom portion of a fuel tank for an automotive vehicle, this section being taken fore-and-aft of the line of travel of the vehicle through a drain valve embodying the present invention. The Oil drain valve is available in three materials: corrosion resistant steel, stainless steel and Ecobrass (brass).
Drain valves are manufactured and tested in accordance with national, international, and non-governmental standards. One of the biggest concerns in draining your pool, especially if it is fiberglass, is the pressure differential from the outside ground. Once the new valve is installed, you can refill the tank and begin heating the water right way.
Over time, mineral scale consisting of calcium or other minerals can form on the inside of water heaters. Connect a garden hose and drain your tank. Instead, such air compressors use one of three valve types. Make sure you open the test cocks on the back flow instrument to that t the water drain out.
Call a qualified plumber if rust or corrosion appears severe, if water is leaking from the pipes or tank, or if electrical wires or gas connections appear loose or deteriorated. Since replacing a hot water heater drain valve has the potential to 1) scald you and 2) flood your basement, it's best to leave this job to professionals.