Patent ID: 8011389
Filing Date: 2011-09-06
Classification: F16K,Y10T

Abstract:
1. A manifold valve comprising a main passageway, a branch passageway split off from said main passageway, a main passageway valve opening and closing said main passageway, and a branch valve opening and closing said branch passageway, said main passageway, said branch passageway, said main passageway valve, and said branch valve being integrally formed, wherein said main passageway valve and said branch valve are each a manual valve having a valve element, a stem connected to said valve element, and an operating lever connected to said stem, said operating lever pivoting in an axial direction of said stem to open and close the passageway, said main passageway valve and said branch valve each converting pivoting motion of said operating lever to linear motion of said valve element and pressing said valve element against and separating it from a valve seat to open and close the passageway, the manifold valve further comprising an interlock mechanism, wherein when one of said main passageway valve and said branch valve is in an open state and the other is in a closed state, said operating lever of one of said valves valve disables pivoting motion of said operating lever of the other of said valves, and wherein in said interlock mechanism, said operating lever has a first abutting face abutting against a top surface of a bonnet surrounding said main passageway valve or said branch valve when said main passageway valve or said branch valve is in a closed state, a second abutting face abutting against the top surface of said bonnet when said main passageway valve or said branch valve is in an open state, and a limiting face substantially parallel to said first abutting face, and when said one valve is in a closed state and said other valve is in an open state, the second abutting face of said operating lever of said closed state valve and a limiting face of said operating lever of said open state valve abut against each other or have a clearance.