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NTVS40-27 NTVS - 2-way control valves, DN15-150, kvs 0.4-310, DIN-standard

Pressure balanced 2-way valve intended for control of hot, cold or glycol-mixed water or district heating. Intended for use with the RVAN... actuators.

Specifications

Specifications for NTVS40-27
Actuator connection Standard for RVAN5.../RVAN10... actuators
Rangeability 100:1
Stroke 20 mm
Nominal diameter DN40
Kvs 27 m³/h
Max. diff. pressure 1600 kPa
Media temperature -5…185 °C
Specifications for NTVS - 2-way control valves, DN15-150, kvs 0.4-310, DIN-standard
Application Heating, Cooling, District heating, District cooling
Pressure rating PN16
Connection types Flanged according to EN 1092-2
Flow characteristics Equal percentage
Leakage 0.0 % of Kvs (PTFE gasket, carbon-filled 25 %, no leakage)
Media Hot water, Cold water, Glycol-mixed water (max. 50 % glycol)
Closing direction When stem is pushed inward
Max. diff. pressure 1600 kPa
Media temperature -5…185 °C
Body Nodular (ductile) cast iron EN-GJS-500-7, EN-JS1050
Seat Stainless steel 1.4301
Plug Stainless steel 1.4305
Stem Stainless steel 1.4305
Seat packing PTFE (carbon filled 25 %)
O-rings Viton
Stuffing box Dezincification resistant brass CW511L
Lining Stainless steel 1.4301

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