VFBV320 VFBV2/VFBV3 - 2- and 3-way ball valves

Ball valves, DN15-50, kvs 0.6-63, designed for control of hot, cold or glycol-mixed water in heating and ventilation systems. These ball valves can be used as either characterized control ball valves when a flow plate is installed in port A (default mode), or as on/off ball valves when the flow plate is removed. When the flow plate is removed the Kvs between port A and AB is increased. To be coupled to SEB4 / SEB5 actuators.
Specifications for VFBV320
Nominal diameter DN20
Kvs with flow plate installed in port A 6.3 m3/h
Kvs (On/off, A-AB) 10 m3/h
Kvs (On/off, B-AB) 6.3 m3/h
Actuator SEB4
ΔPs 2500 kPa
ΔPmax 350 kPa
Specifications for VFBV2/VFBV3 - 2- and 3-way ball valves
Application Heating systems, cooling systems, ventilation systems
Pressure rating PN40
Connection BSP internally threaded according to ISO 228/1
Flow characteristics A - AB = equal percentage (Flow plate installed), B - AB = linear, On/Off (No flow plate)
Max. leakage 0.0 % of the kvs value
Media Hot water, cold water, glycol-mixed water
Media temperature -5…+140°C
Rangeability 100:1

Brass CW617N

Ball Chromed brass CW614N


Stem Stainless steel 1.4305
Flow plate POM
Circlips Stainless steel 1.4310
O-rings EPDM

Hand lever for manual operation of ball valves