I have a delta single handle shower valve, that I believe is a 636 or award collection model. It is leaking where the small copper tubes attach behind the handle. I understand that this was a common problem with this particular valve and that delta made a new and improved replacement valve or rough in valve to cure this problem. I believe it is a solid piece to prevent leaks there. Do you know what the part number is for this solid valve? I would like to replace my valve without having to replace my trim kit (polished brass finish from approx. 1992). Thanks for any help you can give me. Ritha

This should be your valve delta single handle 636 - Google Search (http://www.google.com/search?hl=en&source=hp&q=delta+single+handle+636&gbv=2&oq=delta+single+handle+636&aq=f&aqi=&aql=&gs_sm=12&gs_upl=1984l1984l0l8890l1l1l0l0l0l0l828l828l6-1l1l0) you can also call their help line Faucet Parts & Repair Kits : Delta Faucet (http://www.deltafaucet.com/customersupport/index.html)