Double disk gate assembly for block and bleed type valves

A sealing gate for a block and bleed type valve having an inlet in a first plane inclined upwardly about a first horizontal line for admitting fluid into the valve and an outlet in a second plane inclined downwardly about a second horizontal line below and parallel to the first horizontal line for exhausting fluid from the valve, the valve passing fluid from the inlet to the outlet at flow rates controlled by operation of a valve stem longitudinally aligned on a third horizontal line transverse to the first and second horizontal lines and passing between the inlet and the outlet comprising:

• an upper disk-like member for sealing the inlet;
• a lower disk-like member for sealing the outlet;
• a carriage fixed to a lower side of said upper disk-like member and connected to the valve stem for horizontal movement of said upper disk-like member into and out of substantial registration with the inlet in response to operation of the valve stem;
• a hanger fixed to an upper side of said lower disk-like member;
• and
• means engaging said hanger to said carriage for suspending said lower disk-like member below said upper disk-like member for horizontal movement therewith into and out of approximately substantial registration with the outlet and for permitting limited floatation of said lower disk-like member relative to said upper disk-like member into and out of substantial registration with the outlet.

A sealing gate for a block and bleed type valve having an inlet in a first plane inclined upwardly about a first horizontal line for admitting fluid into the valve and an outlet in a second plane inclined downwardly about a second horizontal line below and parallel to the first horizontal line for exhausting fluid from the valve, the valve passing fluid from the inlet to the outlet at flow rates controlled by operation of a valve stem longitudinally aligned on a third horizontal line transverse to the first and second horizontal lines and passing between the inlet and the outlet comprising:

• an upper disk-like member for sealing the inlet;
• a lower disk-like member for sealing the outlet;
• a carriage fixed to a lower side of said upper disk-like member and connected to the valve stem for horizontal movement of said upper disk-like member into and out of substantial registration with the inlet in response to operation of the valve stem;
• a hanger fixed to an upper side of said lower disk-like member;
• and
• means engaging said hanger to said carriage for suspending said lower disk-like member below said upper disk-like member for horizontal movement therewith into and out of approximately substantial registration with the outlet and for permitting limited floatation and pivotal rotation of said lower disk-like member relative to said upper disk-like member into and out of substantial registration with the outlet.