Surge Vessels

Surge vessels (surge tanks) are important component in a water piping system that can reduce the maintenance costs and issues in system. Inadequate surge protection in piping systems can cause pipe bursts, structural damage, negative pressure and undesired water wastage. Negative pressure in water supply systems directly invite the risk of water contamination.

A surge vessel or water hammer arrestor is a vessel installed in the piping system to absorb sudden increase in pressure or to quickly provide extra water during sudden drop in pressure.

CiNQ is a global specialist in engineering and manufacturing surge vessels. We can conduct the Surge simulation and analysis of the piping system to support customers from the early design stages of the project and supply customized surge vessel. CiNQ manufactures two types of surge vessel - Bladder type and Diaphragm type for use in the water pipeline, desalination plants, process pipelines and other applications. Surge vessels can be provided in both horizontal and vertical types.

CiNQ Surge Vessel/Expansion Tank is designed to control the surge with a butyl rubber inside the vessel. The pre-charged air/nitrogen provides the required elasticity to push the water into the system following a pump trip or Valve closure. Once the vessel has been stimulated and correct the pre-charge has been introduced, the vessel will operate automatically, depressurizing once called upon and refilling with the return waves until naturally reaching its steady-state balance. The bladder surge tank serves as an important component of combined surge protection systems protecting against both positive and negative pressure surges.

The internal bladder is often made from high tensile rubber with or without reinforcements, in Neoprene, Nitrile (Buna-N), Food Grade Butyl or Hypalon Rubbers, or expanded to fit the whole vessel. The tank’s internal flexible bladder separates the fluid from air that is pre-compressed between the metal tank housing and the bladder. This design prolongs the system’s life span and reduces the need for maintenance.