Reliable Valves for Municipal & Industrial Water Systems
Clean water infrastructure depends on valves that deliver zero-leak shut-off, corrosion resistance, and decades of maintenance-free operation. GLB Valves provides butterfly, gate, and check valves engineered for potable water distribution, desalination reverse-osmosis systems, and wastewater treatment plants.
From Source to Discharge
Purpose-engineered valve solutions for every stage of the water cycle — from raw water intake and purification through to distribution, collection, and wastewater treatment.
Municipal Water Supply
Potable water distribution valves for treatment works, pumping stations, service reservoirs, and trunk mains. Resilient-seated gate valves, double-eccentric butterfly valves, and swing check valves designed for clean water service with zero contamination risk.
Desalination & Reverse Osmosis
High-pressure isolation and control valves for seawater intake, pre-treatment, reverse osmosis membrane racks, and brine discharge. Super duplex and 6Mo stainless steel construction for resistance to chloride-induced pitting and crevice corrosion.
Wastewater & Sewage Treatment
Valves for screening, grit removal, aeration basins, clarifiers, sludge handling, and effluent discharge. Rubber-lined and fusion-bonded epoxy-coated designs resist abrasion from suspended solids and chemical attack from aggressive wastewater streams.
Engineered for Water Infrastructure
Water and wastewater applications present unique challenges — corrosive media, large pipe diameters, buried installations, and strict drinking water regulations. Our valves are engineered to address each one.
Corrosion Resistance
Fusion-bonded epoxy (FBE) coatings to BS EN 14901, rubber-lined bodies, and stainless steel internals protect against the corrosive effects of treated water, chlorine dosing, and aggressive wastewater chemistry. Ductile iron bodies conform to BS EN 1563 Grade 500-7.
Large Bore Sizes
Butterfly valves and gate valves available in sizes up to 72 inches (DN1800) for large-diameter transmission mains, reservoir outlets, and treatment plant headers. Double-flanged and wafer-pattern options to suit all installation requirements.
Low Maintenance & Long Service Life
Self-lubricating PTFE bearings, corrosion-resistant fasteners, and resilient seat designs deliver maintenance-free operation for 25+ years. Buried service valves include extension spindles and indicator posts for easy above-ground operation.
Drinking Water Compliance
All wetted materials are certified to NSF/ANSI 61 and WRAS (BS 6920) standards for contact with potable water. Elastomers comply with BS EN 681-1, and epoxy coatings meet BS EN 14901 and AWWA C550 requirements for taste, odour, and toxicological safety.
Relevant Certifications
Every valve supplied to the water treatment sector meets the applicable industry standards and drinking water certification requirements.
Valves for Water Treatment
Butterfly Valves
Double-eccentric & resilient-seated, 2" to 72". WRAS approved. FBE coated ductile iron bodies.
View Product RangeGate Valves
Resilient-seated & metal-seated, 2" to 48". BS EN 1074 & AWWA C509/C515 compliant.
View Product RangeCheck Valves
Swing, tilting disc & dual plate, 2" to 48". Non-slam designs for pump protection.
View Product RangeBall Valves
Full bore & reduced bore, 1/2" to 24". Stainless steel & duplex for desalination service.
View Product RangeDiscuss Your Water Treatment Requirements
Share your project specifications and our engineering team will respond with a competitive quote within 24 hours. WRAS approved, NSF/ANSI 61 compliant, and large-bore options available.