A vertical shut-off valve which comprises:
- a valve housing having a housing body including a lower chamber for the input of the pressurized fluid and an upper chamber for the output of the released fluid, an inlet in said lower chamber, an outlet in said upper chamber, an opening for covering said lower chamber, a bottom cover for covering said opening, means to secure said bottom cover, a ring seal around said opening for sealing said lower chamber, a groove on said housing body for said ring seal around said opening, a groove on said bottom cover for said ring seal around said opening, a compression spring located on said bottom cover, a support on said bottom cover for said compression spring to keep it in place, a base on said bottom cover for said compression spring to keep it in place, a link channel on said housing body located in between said lower chamber and said upper chamber, a valve seat secured on said link channel, a barrier on said housing body for said valve seat to prevent being excessively tightened, means to secure said valve seat to said link channel, a ring seal around said valve seat for sealing, a groove on said housing body for said ring seal around said valve seat, an opening on said housing body locating above said upper chamber, a ring seal on said housing body around said opening for sealing said opening, a groove on said housing body for said ring seal, a top cover for covering said opening, a groove on said top cover for said ring seal around said opening, a channel that links from said opening to the upper chamber for a stem assembly passed through, a ring seal for sealing said channel in said opening, a groove on said housing body to place said ring seal for said channel, a groove on said top cover to place said ring seal for said channel;
- a stem assembly located in said lower chamber and said upper chamber through said link channel having the body being passed through the opening of said valve seat and being movable by a reciprocating motion to control the fluid flow from said lower chamber to said upper chamber through said valve seat, wherein a ring seal of said stem assembly is located on the same side as the shaft running direction to engage with said valve seat;
- a pushbutton assembly having a pushbutton body including a channel with a key element for placing said stem assembly, a locknut and a lock washer for securing said body to said stem assembly, an opening on said body for placing in said locknut and lock washer, a groove in said opening, a finish plug for covering said opening, a multiple of legs on said finish plug to lock in said groove, a slot on said finish plug for facilitating the removal from said body with a screwdriver, a slot on said body for facilitating the removal of said finish plug from said body, a washer having an opening on said washer same as the channel of said pushbutton body at the center, a groove on said pushbutton body for said washer.