Butterfly, gate, check and ball valve solutions for raw-water intake, filtration, disinfection, backwash and treated-water pumping systems.
✓ Reliable isolation, flow control and backflow protection
✓ Configurable materials, seats, connections and actuators
✓ Support for EN, BS, AWWA and project-specific requirements
Share your DN, pressure rating, medium, connection, actuation and project standard.
Select a treatment stage to see its main valve duties and suitable valve types.
Simplified process overview. Actual treatment trains vary by source-water quality and project design.
Butterfly valves provide compact isolation and operating flexibility for filters, backwash lines, pump stations and medium- to large-diameter water pipelines.
Connections: Wafer · Lug · Double flanged
Designs: Concentric · Double eccentric
Operation: Manual · Electric · Pneumatic
Resilient seated gate valves provide full-open or full-closed isolation in treatment-plant mains, buried pipelines and water-distribution networks.
Standards: BS 5163 · EN 1074 · AWWA C509/C515
Service: Full-bore pipeline isolation
Locations: Plant mains · Buried pipelines · Distribution lines
Check valves protect pump discharge lines and process equipment by preventing reverse flow when pumps stop or operating conditions change.
Types: Swing · Dual plate · Silent check
Duty: Pump discharge · Backflow prevention
Selection: Closing behavior · Orientation · Available space
Ball valves provide compact on/off isolation in smaller process, drain, sampling and auxiliary lines. For chemical-dosing service, valve and seal materials must be checked against the chemical medium.
Duty: On/off isolation
Locations: Drain · Sampling · Auxiliary and dosing lines
Selection: Medium compatibility · Pressure · Temperature
Use these six checks to define the valve type, materials, actuation and documentation required for your project.
Butterfly or gate valve for isolation; check valve for reverse-flow protection; ball valve for small-bore on/off service.
The medium affects body material, seat compound, internal coating and chemical compatibility.
These values determine valve sizing, pressure rating, operating torque and check-valve closing behaviour.
Ductile iron, epoxy coating and EPDM are commonly considered for water service, subject to the exact operating conditions and approval requirements.
Provide operating frequency, power supply, control signal, position indication and fail-position requirements.
Early confirmation helps avoid flange, installation, documentation and project-acceptance conflicts.
Actuated butterfly valves are commonly used for filter backwash because they provide compact isolation and frequent automatic operation. Check valves may also be required to prevent reverse flow. Confirm flow rate, differential pressure, cycle frequency and closing time.
Yes. Butterfly valves are suitable when their coating, seats and wetted materials meet drinking-water requirements. Ductile iron with an approved epoxy coating and EPDM seat is common, but WRAS or NSF documentation must match the exact product configuration.
Consider flow rate, pressure, pump characteristics, installation orientation, pressure loss and flow reversal. Swing, dual-plate and silent check valves have different closing behaviours. Proper selection can reduce slam and water-hammer risk, but requires system evaluation.
Ductile iron with a suitable epoxy coating and EPDM sealing is often used for treated water. Higher chlorine concentrations may require stainless steel, PTFE or FKM components. Confirm compatibility against concentration, temperature, pressure and exposure time.
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