Valve

A valve, comprising:

• a housing body, the housing body defining a housing cavity, the housing cavity extending transversely through the housing body;
• a partition plate, provided in the housing cavity to divide the housing cavity into a left cavity and a right cavity, a leakage passage being provided in and extends along the partition plate through the housing body, with a leakage passage lower port and a leakage passage upper port formed on the housing body;
• and
• a collecting device, the collecting device comprising a lower piece, an upper piece and a connector connecting the lower piece and the upper piece, wherein the upper piece is configured to cover the leakage passage upper port and the lower piece is configured to cover the leakage passage lower port, and wherein the lower piece comprises a collecting cavity communicating with the leakage passage lower port,
• wherein the lower piece and a lower part of the housing body are provided with a lower fitting assembly, the upper piece and an upper part of the housing body are provided with an upper fitting assembly, and the lower piece and the upper piece are fitted on the housing body in place by means of the lower fitting assembly, the upper fitting assembly, and the connector.