KSB COBRA-TDC01/03, Installation & Operating Manual

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4 Description of the valve
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COBRA-TDC01/03
8194.8/02-EN
4.5 Function
Design The tilting disc check valve comprises the pressure-retaining parts, i.e. the body, the
actuating shaft, the functional unit (shaft and valve disc) and the elastomer ring on
the valve disc.
Function The valve is opened by the pressure inside the pipe and closed by back pressure of
the counterweight.
Sealing The valve disc and actuating shaft are joined by keys and sealed to atmosphere by O-
rings.
4.6 Scope of supply
The following items are included in the scope of supply:
▪ Valve
▪ Valve operating manual
4.7 Noise characteristic
When operated within the operating conditions documented in the order
confirmation and/or characteristic curves booklets, the valve will not exceed a sound
pressure level of 80 dB in acc. with IEC 60534-8-4. Unfavourable piping layouts or off-
design operating conditions may give rise to physical phenomena like cavitation,
resulting in significantly higher sound pressure levels.