Cleaning is Required All product contact surfaces are polished 304/316 Stainless Steel or food-grade PTFE (FDA 21 CFR177.1550). 1. Body clamp allows the valve to quickly and easily... application that requires frequent cleaning of processing equipment. Save time and eliminate hassle with the Roto-Clean. Controls are easily and quickly removed and replaced by hand... contact parts are still together and each can be cleaned and sanitized. Re-assembly is just as easy and in a few minutes, the valve is back in service. Clearances are undisturbed...