There are two types of unloader valves: the pressure-actuated unloader and the flow-actuated unloader. The pressure-actuated unloader works by responding to increases and decreases in water pressure. The flow-actuated unloader relies completely on water flow; a halt in water flow increases the internal pressure. Most unloaders are designed to function with 5 to 10 percent of water flow in the bypass at all times.
It is a popular misconception that 900 followers of cult leader Jim Jones. committed suicide by drinking Grape Kool-Aid laced with cyanide at their. commune in Jonestown Guyana in the late 1970's. This is not true. The. followers of Jones actually drank cyanide laced Flavor-aid, a cheap. imitation of Kool-Aid.
First, Kool-Aid was a better known brand than Flavor Aid. Flavor Aid was a Jel Sert product first sold in 1929 and it was a rival of Kool-Aid, which was introduced in 1927 in powdered form. (Trivia note: prior to the Kool-Aid powder, the same beverage was available in liquid form as Fruit Smack.. Powdering the drink reduced shipping costs.) So when Americans thought about a powdered fruity drink mix (at least one that was not Tang), Kool-Aid came to mind as the market leader.