Watts RK 919-RT 2 - Part of the RK-919 Series Strata Systems This 3/4 inch bronze union

This 3/4 inch bronze union elbow is used in steam and hot water systems

Double O-ring

Features Provides positive gravity shutoff when circulator is not running

These warning pavers are the Cast in Place style and are engineered to be installed after a new concrete pour

Watts RK 919-RT 2 - Part of the RK-919 Series Strata Systems This 3/4 inch bronze unionThis complete valve rubber repair kit provides all the parts necessary to repair or replace all the rubber parts of a 2 inch reduced pressure zone assembly backflow preventer, model 919. This kit consists of 2 check seat O rings, 2 check cover O rings, relief valve O ring, relief valve cover O ring, relief valve stem O ring, check rubber, relief valve diaphragm, quad ring, and relief valve disc. Features Factory replacement kit No special tools