Patent ID: 9726440
Date: 2017-08-08
CPC Classifications: F16K,F28D,F28F

Claim:
1. A valve apparatus comprising: a valve housing; a main cavity formed within said valve housing and extending from a first open end having a first diameter to a second closed end having a second reduced diameter, the second closed end being embedded within said valve housing; a first fluid inlet passage for receiving fluid from a fluid source in a first direction; a first fluid outlet passage for returning said fluid to said fluid source in a second direction that is generally opposite to said first direction; a second fluid outlet for discharging said fluid from said valve housing; a second fluid inlet for receiving said fluid discharged from said valve housing and returning said fluid to said fluid source via said first fluid outlet; a first valve chamber formed within said main cavity and in communication with said first fluid inlet; a valve mechanism slidingly mounted within said first valve chamber, the valve mechanism adapted for controlling fluid flow from said first fluid inlet passage to said second fluid outlet; a second valve chamber in fluid communication with first valve chamber and said first fluid outlet passage when said valve mechanism is in a first position; a third valve chamber in fluid communication with said first valve chamber and said second fluid outlet when said valve mechanism is in a second position; wherein said second valve chamber is fluidly isolated from said third valve chamber; and wherein the first fluid inlet passage is arranged coaxially within said first fluid outlet passage.