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DF40B25NI

DF40B25NI

Product Description

These single-seated valves are used for modulating control of hot/chilled water or steam in heating, ventilating and air conditioning systems. They are designed especially for use in high differential pressure applications (e.g. district heating) The valves can be operated by linear actuators series ML64... and ML74...

Technical Properties

Valve type 2-way linear valve, pressure balanced
Medium type water or water-glycol mixture according to VDI 2035
DN size 40 mm
Media temp. 2 ... 220 oC
Kvs value 25
Flow char. mod.equal%
Nominal pressure PN16
Materials

Stem made of stainless steel, valve body made of nodular iron (GGG40.3), flanged per ISO 7005-2

Stroke 20 mm
Port connection flanges ISO7005
Action

Stem down to close

Features
  • Pressure-balanced plug
  • Nodular iron body with flanged end connections
  • Low seat leakage rate
  • Metal-to-metal seating for long life span
  • Self-adjusting packing
  • Accurate positioning to ensure state-of-the-art temperature control
  • Direct-coupled electric for easy mounting