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VVF53.50-31.5

2-port seat valve, flanged, PN25, DN50, kvs 31.5

Stock no. S55208-V127

Stock no. S55208-V127

  • With flanged connections to ISO 7005

  • For cooling, chilled, low and high temperature water, brine, heat transfer oils, saturated and superheated steam 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.

Attribute

Value

Stroke

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

Leakage rate

0...0.01 % of kvs value

DN

50

kvs

31.5 m³/h

Medium

Water, Water with anti-freeze

Medium temperature

-20…220 °C

Valve characteristic

Equal percentage, kvs 250/400 linear

Rangeability

DN 15, kvs ≤ 1,25 m³/h: >50, DN 15...150: >100

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

Absolute pressure p1 steam

1600 kPa abs

SAX.. Δpmax

300 kPa

SAX.. Δps

350 kPa

SKD.. Δpmax

400 kPa

SKD.. Δps

450 kPa

SKB.. Δpmax

1150 kPa

SKB.. Δps

1200 kPa

SKD.. Δpmax steam

600 kPa

SKD.. Δps steam

2500 kPa

SKB.. Δpmax steam

1200 kPa

SKB.. Δps steam

2500 kPa