Industrietechnik

VFDH - 2-way control valves

This product is discontinued

Pressure balanced 2-way valve, DN15-150, kvs 0.4-310, DIN-standard. Intended for control of hot, cold or glycol-mixed water, ideal for district heating within the temperature range -5...+185°C. Intended for use with the SE5.../SE10.../SE18.../SE25... actuators.

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Specifications

Specifications for VFDH - 2-way control valves
Pressure rating	PN16
Connection	Flanges according to EN 1092-2
Flow characteristics	Equal percentage
Max. leakage	0.0 % of the kvs value (PTFE gasket, carbon-filled 25 %, no leakage) / 0.05 % of kvs for NTVS…-…M models with metal packing
Media	Hot water, cold water, glycol-mixed water
Media temperature	-5…+185°C
Rangeability	100:1
Max. diff. pressure	1600kPa
Body	Nodular cast iron (GJS) EN-JS1050
Seat	Stainless steel 1.4301 (DN15…DN100) or gunmetal CC491K (RG5) (DN125…DN150)
Plug	Stainless steel 1.4305 (DN15…DN100) or gunmetal CC491K (RG5) (DN125…DN150)
Stem	Stainless steel 1.4305
Lining	Stainless steel 1.4301
Seat packing, soft seal	PTFE with 25 % carbon
Seat packing, metal seal	Stainless steel 1.4057
Packing box	Dezincification resistant brass CW 602N, self-adjusting teflon
O-rings	Viton