Thank you for your question regarding how to adjust the water level on the fill valve for your Delta Turner® Round Front Dual-Flush Toilet and I am happy to assist you today.
Please visit the link below to view how to make a water level adjustment in the tank and see step 2 only, a major water level adjustment cannot be made with this fill valve (RP93378):
I hope this information is helpful and please do not hesitate to give us a call at 855-345-1345 and we will be happy to help you where we can.
Delta Faucet Company
Date published: 2018-03-23