Patent ID: 6089274
Filing Date: 2000-07-18
Classification: F16L

Abstract:
An I-type counterflow absorber connecting directly with a piping system for absorbing impact force and noise resulting from water hammering effect, said counterflow absorber comprising:a hollow outer tube including a front tube and a rear tube fastened together by a fastener;a valve seat located between the front and rear tube to divide interior of the outer tube in a front and a rear space having a funnel groove and at least one passage for communicating the front space with the rear space;an inner tube located in the rear tube having one end engaging with the funnel groove for channeling water flow from interior of the rear tube to the front tube;a valve means located in the front tube including a valve, a valve stem attached to the valve at one end thereof and a spring surrounding the valve stem, the valve stem passing through a bracket located in the front tube and movable therethorugh for the valve to close the funnel groove by means of the spring in a normal flow environment; andan annular piston board movably located between the inner tube and the rear tube to separate the space between the inner tube and rear tube in a buffer zone and an air chamber filled with air.