Increased comfort|Even temperatures|Cleaner air|Decorating freedom|Energy efficiency|Pre-assembled|Stainless manifold is to be used in closed loop hydronic heating, cooling and snow melting systems|These Pre-assembled 1-1/4 inch diameter stainless supply and return manifolds come attached to two 6-5/8 inch spacing brackets for Compact design remote mounting|This stainless manifold provides shut-off and balancing valves with flow meters for each circuit|Each flow meter/balancing valve allows graduated flow setting up to 2 gpm, maximum 18 gpm per manifold|The air bleeder and purge valves are connected and factory tested|Air bleeder model 2878.914, bracket model 2878.912, purge valve model 2878.915, supply flow meter valve model 2878.920, supply shutoff balancing valve model 2878.924