VFD220-6,3 VFD2, 2-way control valves

2 way valves, DN15-50, kvs 0.25-40, 20 mm stroke. Designed for control of cold, hot or glycol-mixed water. For use in domestic water systems or district heating within the temperature range -5°C...+150°C. They are pressure balanced (from DN20-50, not DN15) and can therefore handle high differential pressure with low force. The valves are intended to be used together with SE5 actuators.

Specifications for VFD220-6,3
Nominal diameter DN20
Kvs 6.3 m3/h
Actuator SE5
Specifications for VFD2, 2-way control valves
Pressure rating PN16
Connection BSP externally threaded according to ISO 228/1; supplied with threaded connections
Flow characteristics Equal percentage
Max. leakage 0.0 % of the Kvs value (PTFE gasket, carbon-filled 25 %, no leakage)
Media Hot water, cold water, glycol-mixed water
Media temperature -5…+150°C
Rangeability 100:1
Stroke 20mm
Max. diff. pressure 1600kPa
Body Gunmetal CC491K (RG5)
Seat Stainless steel 1.4301
Plug Stainless steel 1.4305
Stem Stainless steel 1.4305
Seat packing PTFE with 25 % carbon
Packing box Dezincification resistant brass CW 602N, self-adjusting teflon
O-rings Viton
Nut Malleable cast iron, galvanized
Nipple Dezincification resistant brass CW 602N
Fitting seal Novatec Premium 2, Nitrile bonded aramid fibre with graphite
IS0603080300

Spare parts kit, packing box for ETRS, MTVS and MTRS valves (until 2019-12) and for ETVS and NTVS valves.