1. The diameter of the barbed end is around 17mm, therefore, you can use it to connect to:
(1) Nylon hoses with Internal Diameter around 14-15mm. You may need to use professional tools to connect Nylon hoses
(2) Rubber hoses with Internal Diameter around 15-16mm. You may need to use a hose clamp to fasten.
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Installation instructions:
Normally, the quick connect is connected to Nylon or Rubber hoses. Refer to the following general description for connection examples.