The supply manifold comes with a 1" FNPT isolation valve, thermometer, and hose bib/air vent. A lockable 0-2 US gpm (0-7.5 L/min; ±10% precision) visual flow meter permits fine tune balancing of the flow rate for each loop.
The return manifold comes with a 1" FNPT isolation valve, thermometer, and hose bib/air vent. A valve provides on/off manual control to allow isolation of individual loops for each loop. The valve accepts optional actuators for automated control. 
Two metal mounting brackets are included.
PEX to manifold connecters are sold separately.

• 2 US gpm flow meters
• 1" FNPT supply and return isolation valves
• Supply and return hose bibs
• Return valve accepts optional actuators for automated control