HIUs

Heat Network Systems

Pressure Independent Thermostatic Radiator Valves

Pressure differential control maintaining pre-set flow rates
Pre-set flow rates for commissioning
Thermostatic control
Maintaining the design efficiencyof the system
System remains balanced under fluctuating conditions
Prevention of uncontrolled high secondary return temperatures under low load
Reduced system noise

PTRV Flow Tables

Position	Flow rate (l/h) to EN215 valve only	With thermostatic head flow variance +/- %	Minimum Flow (l/h)
1	25	40%	15
2	35	25%	26.5
3	55	20%	44
4	80	10%	72
5	95	10%	85.5
6	120	10%	108