Quick-plug connection connector and leveling valve

A leveling valve comprising:

• a valve chamber;
• a quick-plug connection connector defining a pipeline installation path leading to said valve chamber;
• said quick-plug connection connector further including:
• a connector body having a head end and a tail end;
• a locking member arranged at said tail end of said connector body;
• a release ring partially extending into said connector body from said head end so as to come into contact with said locking member;
• said release ring having an annular receiving groove provided therein;
• a sealing ring seated in said annular receiving groove;
• and,
• said release ring and said locking member being configured to release said locking member in response to said release ring being pressed against said locking member to form said pipeline installation path leading from said sealing ring to said locking member.