Valves for drinking water treatment plants
A water treatment plant has hundreds of valves, many of them actuated, opening and closing every day through the filter backwash cycles.
TAZ Engineering Team · · 5 min
Filter gallery
Each filter has several valves: raw water inlet, filtered water outlet, backwash water and air inlets and waste outlet. They switch automatically, so electrically or pneumatically actuated butterfly valves are used.
Chemicals
Coagulants, chlorine and other chemicals are aggressive. Dosing lines use plastic and stainless steel valves selected for each chemical.
Reservoirs and pump stations
Treated water reservoirs and high-lift pump stations use resilient-seated gate valves, butterfly valves and check valves with hygienically approved materials.
Service life
Frequent cycling needs wear-resistant seals and reliable actuators. Keep spare liners and seals in stock.
Checklist
- number of filters
- actuator type
- chemicals
- hygiene approval
- DN
- spare seals