Valve core connection structure and stop valve set of valve assembly

A valve core connection structure of a valve assembly comprising:

• a body including a holder, a first inflow connector extending from a first side of the holder, a second inflow connector extending from a second side of the holder opposite to the first inflow connector, a first outflow connector extending from a top of the body, and a second outflow connector extending from a bottom of the body opposite to the first outflow connector;
• a first inflow seat formed on the first inflow connector, and a second inflow seat formed on the second inflow connector;
• the holder having a first accommodation cavity defined in the holder;
• the first inflow seat and the second inflow seat having two second accommodation cavities defined in the first inflow seat and the second inflow seat respectively so as to communicate with the first accommodation cavity via the first inflow connector and the second inflow connector individually;
• two stop valve sets, each of the two stop valve sets including a valve core, a limiting loop, a defining structure, and a locating structure;
• the valve core being accommodated in each of the two second accommodation cavities of the body, the limiting loop being fitted on the valve core;
• and the defining structure being defined between the valve core and the limiting loop so that the valve core retains with the limiting loop so as to avoid a removal of the limiting loop from the valve core;
• the locating structure being defined between the valve core and the limiting loop so that the valve core rotates between an opening position and a closing position of a predetermined angle relative to the limiting loop;
• two limitation structures, each of the two limitation structures being defined between a peripheral fence of each second accommodation cavity and the limiting loop so that the limiting loop is retained on the peripheral fence of each second accommodation cavity, thus limiting rotation of the limiting loop;
• two locking sleeves, each of the two locking sleeves being screwed on the first inflow seat and the second inflow seat so that the limiting loop and the valve core are limited in each second accommodation cavity;
• wherein the defining structure has a peripheral groove, multiple hooks, a stepped trench, and a stepped fence;
• the peripheral groove forms on an outer wall of the valve core;
• the multiple hooks form on the locking rib of the limiting loop and retain in the peripheral groove so as to avoid a removal of the limiting loop from the valve core;
• the stepped trench forms in the limiting loop;
• and the stepped fence forms on the outer wall of the valve core so as to engage with the stepped trench, thus preventing a removal of the limiting loop from the valve core;
• wherein the locating structure includes at least one positioning block and at least two first fixing shoulders;
• wherein the at least one positioning block forms on the outer wall of the valve core;
• and the at least two first fixing shoulders form on the limiting loop respectively so as to limit a rotation of the at least one positioning block between the at least two first fixing shoulders.