Industrietechnik

VFPI20-900 VFPIx - Pressure independent control valves

Pressure independent control valves, DN15-25, 2.7 mm stroke. The valve is a combined differential pressure regulator, flow limiter and equal percentage control valve with full stroke and authority. The pressure independent control valves are suitable for constant or variable temperature systems and can be used as constant flow limiters in constant volume systems (with no actuators), or as pressure independent control valves in variable volume systems (with actuators).The VFPIP / VFPIM / VFPI valves DN15-25 are intended to be used together with ITK's SE1Cxxx or SEZ2 actuators.

Specifications

Specifications for VFPI20-900
Connection G3/4
Rangeability 50 ~ 100:1
Stroke 2.7 mm
Nominal diameter DN20
Max. diff. pressure 600 kPa
Max. start-up pressure 30 kPa
Flow rate intervall setting 180…900 l/h
With measuring port connectors No
Specifications for VFPIx - Pressure independent control valves
Application District heating, District cooling
Pressure rating PN25
Connection types BSP internally threaded according to ISO 228/1
Flow characteristics Equal percentage
Leakage 0.01 % of Kvs ()
Media Hot water, Cold water, Glycol-mixed water (max. 50 % glycol)
Closing direction When stem is pushed inward
Media temperature -10…120 °C
Body Brass CW602N
Stem Stainless steel 1.4305
Ball Chromed brass CW614N
O-rings EPDM
Pressure regulator EPDM, stainless steel and high resistance polymer

Accessories