Pressure and suction transmissions
A suction line connects the fluid source – such as a well, tank or pit – to the pump inlet. It is used on the suction side of the pump where there is no natural pressure on the system. It places special demands on materials, joints and installation as negative pressure can cause poor lines to collapse or draw in air.
Suction lines are used in both temporary and permanent pumping solutions and should be selected based on the medium, length, head and pump type.
When the pump creates negative pressure, it draws liquid in through the suction line. Therefore, the line must be:
Airtight and vacuum-tight
Pressure stable – must not collapse under negative pressure
No leaks or leaky couplings that can cause air pockets and cavitation
For long stretches or high lift heights, a suction damper, foot valve or anchoring may be needed to ensure consistent and efficient suction performance.
Efficient and stable pumping without air in the system
Reduces risk of cavitation and downtime
Easy installation with quick couplers
Flexible adaptation to terrain and access conditions
Can be combined with filters and valves for better pump protection
Bypass pumping of wastewater during pipe renovation
Drainage of basements and construction pits
Groundwater lowering and sludge emptying
Industrial liquid handling from tanks or containers
Temporary pumping solutions in case of accidents or breakdowns
Suction cords are available in many versions depending on the application:
Materials:
Heavy-duty PVC or PU hoses (lightweight and flexible)
Rubber hoses (high durability and vacuum resistant)
Reinforced hoses (resists collapsing under suction)
Sizes:
Typically 3″-12″, but can be adapted to larger flows
Can be cut or extended as needed
Accessories:
Foot valves and suction filters
Bauer, Camlock or flange couplings
Anchors, bends and reducers
