Inquiry (采购产品): Relief Valve I am pumping rock slurries in organic suspension, and am in need of a relief valve. The rocks are 0.25" and smaller, and plug common relief valve designs. Do you have a recommendation? **** Hidden Message ***** Carl Beitelshees 14094 Company: DuPont E-mail: carl.p.beitelshees@usa.dupont.com **** Hidden Message ***** carl.p.beitelshees@usa.dupont.com