Response to Hi Mr.Bill, Unfortunately there is not just the lower assembly to your valve. Good news is that the complete 261186 valve will work on your T-180WF filter, please note that Sta-Rite did make a few changes from the original valve so some re-plumbing may be necessary. I'm sorry we don't have a manual on this valve, but if after you order the valve you have any questions about the install then feel free to call or email us for assistance with the installation.

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