Check out the Pee Valve Rebuild Kit Install.     See an informative Video Repair of DUI Yukon 2 Diving Drysuit - Light Monkey - Duckbill Style - P-Valve. 

P-Valve Service Kit, Light Monkey

SKU: 710084

Be prepared for a Safe Drysuit dive, be adequately hydrated. Proper Hydration  begins 24 hours before the planned dive. As your dive times increase, you become gradually dehydrated. Part of the process of staying hydrated and being comfortable underwater is having the ability to urinate while wearing your drysuit.