Engineering guides

Valves for cooling water circuits and cooling towers

Almost every plant cools its equipment with water in a closed circuit. Valves in that circuit work continuously and suffer from scale and corrosion.

TAZ Engineering Team · · 5 min

System layout

Cooling towers, circulation pumps, process heat exchangers, make-up and blowdown. Large lines use butterfly valves, and pumps get gate valves and check valves.

Water quality

Recirculating water concentrates salts, forms scale and promotes corrosion. That calls for coated bodies, corrosion-resistant stems and regular water treatment.

Maintainability

Allow each heat exchanger to be isolated without stopping the whole circuit. Isolation valves must still seal after months in one position.

Ordering

Send the circuit diagram and a water analysis and TAZ will select gate valves, butterfly valves and check valves with suitable coatings.

Checklist

  • circuit diagram
  • DN
  • water analysis
  • coating
  • exchanger isolation
  • check valves

Primary references