Bi-phase fluid surge suppressor device

Abstract

A siphon guard includes a housing having an inlet and an outlet. A primary flow path is disposed within the housing and is in fluid communication with the inlet and the outlet. A secondary flow path is disposed within the housing and is in fluid communication with the inlet and the outlet. The secondary flow path has a higher resistance to fluid flow than the primary path. A valve is disposed within the primary flow path. The valve has a valve seat and a first ball and a second ball. The first ball is movable by gravity between a valve closed position, where the first ball is in contact with the valve seat, and a valve open position, where the first ball is spaced from the valve seat. The first ball is disposed between the second ball and the valve seat. The second ball is movable by gravity between a valve closed position and a valve opened position.

What is claimed is: 
     
         1 . A siphon guard comprising:
 a housing having an inlet and an outlet;   a primary flow path disposed within the housing and in fluid communication with the inlet and the outlet;   a secondary flow path disposed within the housing and in fluid communication with the inlet and the outlet, the secondary flow path having a higher resistance to fluid flow than the primary path; and   a valve disposed within the primary flow path, the valve having a valve seat and a first ball and a second ball, the first ball being movable between a valve closed position where the first ball is in contact with the valve seat and a valve open position where the first ball is spaced from the valve seat, the first ball is disposed between the second ball and the valve seat, the second ball being movable between a valve closed position and a valve open position.   
     
     
         2 . The siphon guard of  claim 1 , wherein the second ball is larger than the first ball. 
     
     
         3 . The siphon guard of  claim 2 , wherein the second ball is weighs more than the first ball. 
     
     
         4 . The siphon guard of  claim 1 , wherein the first ball and the second ball are biased by gravity. 
     
     
         5 . The siphon guard of  claim 1 , wherein the second flow path is always open. 
     
     
         6 . The siphon guard of  claim 1 , wherein the first ball is made of ruby and the second ball is made of tantalum metal. 
     
     
         7 . A shunt and siphon guard kit comprising:
 a shunt having a first housing having an inlet and an outlet, a flow path disposed within the first housing;   a spring biased valve being disposed within the flow path in the shunt housing;   a siphon guard having a second housing having an inlet and an outlet, said inlet of the siphon guard being in fluid communication with the outlet of the shunt, a primary flow path disposed within the second housing and in fluid communication with the inlet and the outlet, the primary flow path having an axial orientation, a secondary flow path disposed within the second housing and in fluid communication with the inlet and the outlet, the secondary flow path having a higher resistance to fluid flow than the primary path; and   a valve disposed within the primary flow path, the valve having a valve seat and a first ball and a second ball, the first ball being movable by gravity between a valve closed position where the first ball is in contact with the valve seat and a valve open position where the first ball is spaced from the valve seat, the first ball is disposed between the second ball and the valve seat, the second ball being movable by gravity between a valve closed position and a valve open position.   
     
     
         8 . The siphon guard of  claim 7 , wherein the second ball is larger than the first ball. 
     
     
         9 . The siphon guard of  claim 8 , wherein the second ball is weighs more than the first ball. 
     
     
         10 . The siphon guard of  claim 7 , wherein the first ball and the second ball are biased by gravity. 
     
     
         11 . The siphon guard of  claim 7 , wherein the second flow path is always open. 
     
     
         12 . The siphon guard of  claim 7 , wherein the first ball is made of ruby and the second ball is made of tantalum metal.