Note on pipework

The pipework has changing pressures during operation. Depending on the operating conditions, pressure peaks can occur (e.g., when closing the non-return valve), which can be multiples of the pump pressure. These changing pressures apply forces on the piping and the pipe connections. For safe and correct operation, design and examine the piping and pipe connections based on these points:

• Make sure that the pipes are self-supporting: No tensile or compressive forces are applied on the lifting unit.
• Consider the pressure resistance of pipework and pipe connections.
• Consider tensile strength of the pipe connections (= longitudinal force fit connection).
• Consider the pressure rating of the pipes.
• Make sure that pipes are connected without tension and vibrations.
• Install a gate valve on the inlet side and on the discharge pipe side downstream of the non-return valve.