Building TechnologiesBuilding Technologies

Site ExplorerSite Explorer
Close site explorer


3-port seat valves PN25 with flanged connections

Stock no. BPZ:VXF53..

Stock no. BPZ:VXF53..

  • With flanged connections to ISO 7005

  • For cooling, chilled, low and high temperature water, brine, heat transfer oils in open and closed circuits

Additional info

When using valves of the V..F43.., V..F53.. lines with a stem heating element and a medium temperature of below -5 °C, the stem sealing gland must be replaced.




To DN 50: 20, From DN 65: 40 mm

Leakage rate

0...0.01 % of kvs value

Leakage rate bypass

0.5...2 % of kvs value;SAX…: 0.05 % of kvs value


Water, Water with anti-freeze

Medium temperature

-20…220 °C

Valve characteristic

Through-port: equal percentage, Through-port: kvs 250/400 linear, Bypass: linear



Permissible operating pressure

2500 kPa

Material, valve body

Nodular cast iron EN-GJS-400-18-LT

Material, inside set

Stainless steel

PN class

PN 16 / PN 25

Product Variants