| CPC F16K 5/0407 (2013.01) [F16K 5/12 (2013.01)] | 19 Claims |

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1. An improved stopcock valve for a low-pressure device, said improved stopcock valve comprising:
a valve body, said valve body having at least one inlet port and at least one outlet port, said valve body having a first through-bore in communication with said at least one inlet port and said at least one outlet port, said first through-bore having a first annular snap-fit therein; and,
a rotatable interference body having a second through-bore therein, said rotatable interference body having an external surface, said second through-bore having a first opening to said surface and a second opening to said external surface, said external surface of said rotatable interference body having a second annular snap-fit thereon, said second annular snap-fit arranged to secure said rotatable interference body to said first annular snap-fit of said first through-bore of said valve body, said external surface including a first tapered groove in communication with said first opening and a second tapered groove in communication with said second opening, said first and second tapered grooves arranged to be in communication with said at least one inlet port and said at least one outlet port upon rotation of said rotatable interference body, each of said first tapered groove and said second tapered groove having a tip and an end defining a curved groove floor, said end having a V-shaped opening into an internal surface of said second through-bore where the curved groove floor of said end curves in a direction towards the respective opposite opening, wherein said rotatable interference body is arranged to be rotated to occlude fluid flow through said valve body or to adjustably regulate fluid flow through said valve body via said second through-bore.
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