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VKF42 Butterfly valves PN16
VKF42 Butterfly valves PN16
· Gray cast iron or nodular cast iron valve body
· DN 50...600
· k vs 65...37,000 m 3 /h
· For fitting with PN 16 counter-flanges to ISO 7005
· Tight-closing in accordance with ISO 5208, leakage rate A
· No maintenance required
· Can be equipped with SQL321B.., SQL361B.. electromotoric actuators, or GEB..1E, GBB..1E,GIB..1E damper actuator
Use
This device is used as motorized or shut-off valves in heating, ventilation and air conditioning systems applications.
· In open and closed circuits
· For 2-position (SPDT) or 3-position controls
· For DC 0…10 V control signals
· For chiller and cooling tower sequencing circuits
· To open or close the flow to a heat exchanger or to complete plant sections
Technical data
|
Operating data |
PN class |
PN 16 to EN1333 |
|
Permissible operating pressure |
1600 kPa (16 bar) |
|
|
Flow characteristic |
according to the diagram on page 5 |
|
|
Permissible medium |
Chilled water, low temperature hot water, cooling water, brine, demineralized water (softened), water with anti-freeze
|
|
|
Medium temperature |
-10…80 °C |
|
|
Flange connection for pipes |
PN 16 to ISO 7005 |
|
|
Face to face dimension |
DIN EN 558, series 20 |
|
|
Top flange (flange for actuator) |
EN ISO 5211 |
|
|
Angle of rotation |
90° |
|
|
Materials |
Body |
DN 50…150 Grey cast iron EN-GJL-200 (HT200)
DN 200…600 Nodular cast iron EN-GJS-450-10 (QT450-10) |
|
Shaft |
Stainless steel 1.4021 (2Cr13) |
|
|
Valve disc |
Nodular cast iron EN-GJS-450-10 (QT450-10),Nylon coating |
|
|
Seat |
EPDM |