SINTESI PICV BALANCING BALL VALVES USE pressure-independent flow limitation for terminal units at constant flow rate flow rate adjustment in variable power HVAC systems KEY FEATURES actuator with fast push connection equal percentage sphere profile complete hydraulic seal during closing binder points for the control of Δp start-up SINTESI PICV VERSIONS AND TECHNICAL FEATURES DN 15 TECHNICAL FEATURES Fluid type Fluid temperature Rated pressure Characteristic curve Leakage class IEC 60534 - 4 Connections BENEFITS Reduced installation cost, thanks to the possibility of a single balance valve to be installed directly upstream of each terminal of the system. Simple selection of the valve as the choice is made only on the basis of the flow rate and no authority must be calculated. The commissioning is easy as no costly balancing is required. Simple control of the system thanks to the equal-percentage characteristic (ball with special profile hole) and the authority of 1. OPERATION The pressure independent control motorised valve (PICV) combines the functions of a differential pressure control, a regulator valve and a twoway control valve into one product. The diaphragm inside is able to maintain a constant differential pressure through the orifice of the control valve and provide a constant flow rate to the terminal. No other balancing valve is required, since the flow is managed regardless of the differential pressure in the other circuits of the system. The flow rate supplied to the terminal unit remains constant whatever the conditions of the system, making it ideal for systems using the latest generation of pumps.

SINTESI PICV BALANCING BALL VALVES SINTESI Heat pump Fan coil BMS SMART PICV CONSTRUCTION CHARACTERISTICS AND MATERIAL USED • High precision equal-percentage ball to ensure maximum flow control under all conditions. Fully sealed thanks to the built-in ball valve. CARTRIDGE SPRING High resistance polymer - EPDM - AISI 303 CARTRIDGE BODY START-UP AND FLOW RATE SETTING CURVES FLOW The graph shows an example of characteristic curves in which startup pressure, hysteresis and accuracy can be measured. The use of a differential pressure gauge to measure the valve pressure drop will check whether the...

SINTESI PICV BALANCING BALL VALVES FLOW RATE REGULATION The valve Kvs and therefore the flow rate are changed using the valve control rod, by means of an actuator of the SINTESI SMART series with proportional control. The relation between the rotation of the ball (opening) and the flow rate is an equal-percentage thanks to the particular laser-cut hole of the ball. FLOW RATE PASSAGE SECTION OPENING The following tables show the flow rates corresponding to different valve opening percentage values, for the various versions available: FLOW RATE FLOW RATE FLOW RATE FLOW RATE FLOW RATE FLOW RATE...

SINTESI PICV BALANCING BALL VALVES OVERALL SIZE ACTUATOR 59 107 PROPORTIONAL SINTESI SMART Flow rate limitation Flow rate regulation MODBUS SINTESI SMART BALL VALVE MODEL dimension B to be taken into account when coupling the actuator to the ball valve dimension B to be taken into account when coupling the actuator to the ball valve EXAMPLE OF SPECIFICATIONS PRESSURE INDIPENDENT CONTROL MOTORISED VALVE (PICV) • balancing ball valve with differential pressure control, made of brass CW602N UNI EN12167, EPDM membrane, PN25, connections G3/4”F EN10226-1. Operating temperature +5°C…+100°C. Fluid type:...