Water Treatment
Reliable flow control solutions for desalination, wastewater, and potable water systems. FLOWKS butterfly valves and check valves are widely used in water infrastructure projects.
Recommended Valve Solutions
Triple Offset Butterfly Valve
Metal-to-metal seal with zero friction, ideal for high-temperature and cryogenic service.
Dual Plate Check Valve
Compact wafer or lug type dual plate check valve with torsion spring for fast closure.
Floating Ball Valve
Two-piece or three-piece body design with floating ball. Suitable for low to medium pressure applications. Available in forged and cast body constructions.
Bidirectional Knife Gate Valve
Double-seat bidirectional sealing knife gate valve for critical applications requiring flow from either direction. Metal or resilient seat options.
Applications in Water Treatment
Seawater Desalination (RO & Thermal)
Reverse osmosis desalination plants use high-pressure feed pumps (60-80 bar) requiring corrosion-resistant valves in duplex stainless steel or super-duplex. Thermal desalination (MSF/MED) uses large-diameter butterfly valves for brine recirculation and distillate cooling. Epoxy-coated or rubber-lined valves prevent crevice corrosion in seawater service.
Wastewater Treatment Plants
Municipal and industrial wastewater plants handle raw sewage, activated sludge, and treated effluent. Knife gate valves isolate process streams in channels and basins. Plug valves handle grit and scum. Aeration systems use fine-bubble diffuser control valves. Corrosion-resistant coatings and full-port designs prevent clogging with solids.
Potable Water Distribution
Drinking water treatment and distribution requires valves with NSF/ANSI 61 certification for lead-free materials. Resilient-seated gate valves isolate distribution segments. Check valves prevent backflow contamination. Air release/vacuum breaker valves protect pipelines from surge damage and vacuum collapse.
Industrial Effluent & Chemical Treatment
Industrial wastewater from mining, plating, and chemical plants contains heavy metals, acids, and alkalis requiring neutralization. Chemical dosing systems use PTFE-lined globe valves for acid/caustic injection. Clarifier underflow uses abrasion-resistant knife gate valves for sludge withdrawal.
Industry Standards & Certifications
Drinking Water System Components
Health effects of materials in potable water
Lead-Free Compliance
Lead content limits for potable water valves
Rubber-Seated Butterfly Valves
Waterworks butterfly valve standard
Metal-Seated Gate Valves
Waterworks gate valve standard
Industrial Valves — Pressure Testing
Shell and seat leak testing
Valves for Water Supply
Fitness for purpose requirements
Materials Available
- ●Ductile Iron + Epoxy Coating
- ●316SS
- ●Duplex 2205
- ●Super-Duplex 2507
- ●Rubber-Lined Steel
- ●Bronze
- ●PTFE-Lined Steel
Frequently Asked Questions
What valve materials are suitable for seawater desalination?+
What is the difference between resilient-seated and metal-seated butterfly valves?+
How do you prevent water hammer in distribution systems?+
Are your valves certified for drinking water contact?+
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