Language 
More Language
Language Water supply systems are the lifeline of urban and municipal development, and the performance of large diameter valves directly determines the stability, efficiency and safety of the entire water supply network. As a globally renowned manufacturer of fluid control equipment with over 25 years of ind
Water supply systems are the lifeline of urban and municipal development, and the performance of large diameter valves directly determines the stability, efficiency and safety of the entire water supply network. As a globally renowned manufacturer of fluid control equipment with over 25 years of industry experience, WEIZIDOM specializes in R&D, production and customization of large diameter valves for water supply systems, providing professional, reliable and high-performance valve solutions for water supply projects worldwide. This article details the core types, specific product parameters, typical global application cases of large diameter valves for water supply systems, and the core strength that makes WEIZIDOM a leading large diameter valve manufacturer in the water supply industry.
For water supply systems, large diameter valves (DN300 and above) are engineered to adapt to low/medium pressure, normal temperature, tap water with minor impurities, and meet the demands of easy operation, low maintenance and long service life. Through years of technological iteration and scenario-based optimization, WEIZIDOM’s large diameter water supply valves have reached international advanced standards in pressure resistance, sealing performance and service life, with standardized parameters matching global water supply project requirements.
Gate valves are the core on-off equipment for municipal water supply main networks, water plant inlet and outlet main pipes, featuring low flow resistance and high flow capacity— the gate plate does not block water flow when fully open, ideal for long-term full open/close working conditions (not for flow regulation).
WEIZIDOM Core Product Parameters: Elastic wedge gate valve (model: WZ-Z45X-16Q) and double gate plate gate valve (model: WZ-Z44T-10Q) cover DN300-DN3000 caliber range, nominal pressure PN10/PN16/PN25, applicable medium: tap water, raw water and other clean water, applicable temperature -20℃~80℃. Sealing performance complies with GB/T 13927-2008 Class A standard, valve body service life exceeds 30 years under normal working conditions. All large diameter models adopt outside screw and yoke design, handwheel torque ≤200N·m, enabling real-time opening observation and easy manual operation.
Key Application: Urban water supply ring network sectional control, water transmission main pipes from water plants to secondary water supply pump stations, with strong adaptability to pipeline settlement and temperature difference deformation.
Butterfly valves are the most widely used large diameter valves in water supply systems, thanks to compact structure, light weight, low cost and fast 90° rotation opening/closing. They are suitable for both branch pipeline on-off control and rough flow/pressure regulation, the first choice for community water inlet main pipes and water plant process pipelines.
WEIZIDOM Core Product Parameters: Soft-sealed centerline butterfly valve (model: WZ-D341X-16Q) and eccentric butterfly valve (model: WZ-D343X-16Q) cover DN50-DN2000 caliber range, nominal pressure PN10/PN16, applicable temperature -10℃~90℃. Sealing material is food-grade EPDM rubber (for drinking water projects), valve plate is QT450 ductile iron with nickel-plated surface. Opening/closing time ≤15s (manual) / ≤5s (electric/pneumatic), fatigue switching times over 100,000. Electric butterfly valves are equipped with PLC control module, supporting 4-20mA analog signal control and remote communication.
Key Application: No large hoisting equipment required for installation, installation space reduced by 60% compared with same-caliber gate valves, greatly lowering water supply project construction difficulty.
Water backflow causes water hammer, equipment damage and water quality pollution—major hidden dangers for water supply systems. Check valves are specially designed to prevent reverse flow, mainly installed at water pump outlets, secondary water supply equipment and pipe network backflow risk nodes.
WEIZIDOM Core Product Parameters: Swing check valve (WZ-H44X-16Q), silent check valve (WZ-H41X-16Q) and lift check valve (WZ-H42X-16Q) cover DN300-DN1800 caliber range, nominal pressure PN10/PN16, applicable flow velocity 0.8~3.0m/s, water hammer pressure resistance ≤1.5 times nominal pressure. Silent check valve closing response time ≤0.3s with hydraulic buffer device to eliminate clack impact noise; all models meet drinking water pipeline zero leakage sealing requirements.
Key Application: Sensitive response under low-pressure and large-flow conditions, effectively preventing water pump idling and pipeline water hammer damage in municipal and industrial water supply systems.
Air accumulation in water supply pipe networks leads to unsmooth water flow, pressure fluctuation and even air hammer pipeline damage. Air valves are essential supporting equipment, installed at pipe network high points, long-distance pipeline ends and water pump suction pipes where air easily accumulates.
WEIZIDOM Core Product Parameters: Composite air valve (model: WZ-CARX-10Q) covers DN50-DN300 caliber range, nominal pressure PN10/PN16, applicable temperature 0℃~80℃, exhaust capacity 0.2~50m³/h (automatic) / 100m³/h (manual). Float is 304 stainless steel, valve body is QT450 ductile iron with epoxy resin anti-corrosion coating, air tightness test pressure is 1.5 times nominal pressure.
Key Application: Integrates automatic exhaust, automatic air intake and manual exhaust functions, real-time discharge of accumulated air, avoiding air lock and improving long-distance water transmission efficiency by 15%~20%.
With excellent product performance, standardized parameters and customized solution capabilities, WEIZIDOM’s large diameter water supply valves have been successfully applied in over 60 countries and regions across Asia, Africa, Europe, the Americas and Oceania. The brand has undertaken a number of high-difficulty, large-scale key water supply projects, becoming the preferred supplier for municipal, agricultural irrigation and seawater desalination water supply projects worldwide.
Project Demand: 86km of main pipeline renovation in Beijing’s core urban area, design water supply capacity 1.2 million m³/d, requiring high-sealing, adaptable large diameter valves for complex urban underground construction environments.
WEIZIDOM Solution: Supplied 326 sets of DN1200/DN1600 elastic wedge gate valves, DN800/DN1000 soft-sealed butterfly valves and DN400 silent check valves; customized short-body valve structure for narrow construction space, equipped with intelligent electric control systems for remote pipe network monitoring and operation.
Project Effect: Zero leakage, stable operation for over 1 year; core urban water supply pressure stability improved by 25%, pipe network maintenance cost reduced by 30%.
Project Demand: Solve drinking water shortage for 2 million residents in Tanzania’s economic capital, 158km water transmission pipeline, harsh working conditions (high temperature, high humidity, slightly corrosive raw water).
WEIZIDOM Solution: Supplied 518 sets of DN1000/DN1500 gate valves, DN600/DN800 eccentric butterfly valves and DN200 composite air valves; optimized epoxy resin double anti-corrosion coating and high-temperature resistant EPDM sealing material for local conditions; provided on-site installation guidance and debugging by professional technical team.
Project Effect: Stable operation for 2 years, water supply efficiency over 95%; awarded Excellent Supplier Certificate by Tanzania Water Supply and Sewerage Authority.
Project Demand: 500,000 m³/d desalination capacity, coastal pipeline medium with trace salt ions, requiring high corrosion resistance and sealing performance for large diameter valves.
WEIZIDOM Solution: Customized DN800/DN1200 304 stainless steel butterfly valves and DN300 corrosion-resistant composite air valves; food-grade 304 stainless steel for valve body and internal components, PTFE coating for sealing surface to enhance corrosion resistance; provided one-stop solution including valve matching, on-site testing and after-sales maintenance.
Project Effect: Stable operation under coastal corrosive conditions since Q1 2024, desalinated water transmission loss less than 1%, project operation efficiency far exceeding design standards.
Project Demand: 120,000 mu irrigation area, 98km water transmission pipeline, requiring low-cost, easy-to-operate large diameter valves adapted to field working conditions.
WEIZIDOM Solution: Supplied 289 sets of DN500/DN600 PN10 soft-sealed butterfly valves and DN150 composite air valves; adopted simple-structure manual operation for field use, optimized valve connection mode for quick agricultural pipeline installation.
Project Effect: Accurate irrigation water volume control, agricultural water utilization rate improved by 35%, per mu irrigation cost reduced by 20%, boosting local modern agricultural development.
As a global leader in the fluid control industry, WEIZIDOM has formed core competitive advantages in large diameter water supply valve production through 25 years of technical precipitation and global project practice. The brand’s combination of standardized product parameters, customized scenario solutions and global localized service makes it a reliable partner for water supply projects worldwide.
WEIZIDOM Group has 5 professional production bases in Tianjin, Hebei, Shandong, Lianyungang and Wenzhou China, with specialized division of labor: Tianjin factory focuses on butterfly valve production (daily output of over 200 large diameter butterfly valves); Hebei factory is the core gate valve production base (annual capacity of 50,000 large diameter gate valves); other bases produce pipe fittings, water meters and stainless steel valves. Standardized large diameter valves have a short delivery cycle of 7-15 working days, meeting the large demand of water supply projects. The brand also has 4 overseas branches in Tanzania, Zambia, Kenya and Indonesia, building a localized service network for timely technical support and after-sales service.
WEIZIDOM adheres to quality first for water supply valves: valve body is QT450/QT500 ductile iron (high strength, corrosion resistance) for tap water’s weak corrosivity; sealing surface is food-grade EPDM rubber and PTFE (wear resistance, aging resistance) to avoid impurity-caused leakage; key components (butterfly plate, float) are 304/316 stainless steel for long immersion service life. Every batch of valves undergoes strict pressure resistance, sealing, fatigue and anti-corrosion tests before delivery. Products meet GB, ANSI, DIN international standards, and all drinking water valves have passed NSF61 drinking water safety certification.
WEIZIDOM has accumulated abundant experience in municipal water supply, agricultural irrigation, seawater desalination and industrial water supply. The brand provides one-stop fluid control solutions including valve selection, parameter matching, on-site installation guidance and after-sales maintenance for different water supply scenarios (urban trunk pipelines, community branches, water plant process pipelines). For non-standard working conditions (special caliber, high temperature, high corrosion, intelligent control), the R&D team completes customized design in 7-10 working days, with sample testing and mass production to match actual project needs.
WEIZIDOM invests over 8% of annual sales in large diameter water supply valve R&D, integrating IoT, big data and intelligent control into product design. The brand has developed electric/pneumatic large diameter valves with remote control, automatic regulation and fault alarm functions, realizing intelligent water supply pipe network management. The R&D team of over 50 senior valve engineers keeps pace with international advanced technology, continuously optimizing product performance. WEIZIDOM has also participated in the formulation of over 10 national and industrial water supply valve standards, leading the industry’s technological development.
WEIZIDOM’s large diameter water supply valves are the core choice for efficient and stable water supply networks, with standardized international parameters, proven global project cases, strict quality control and one-stop customized solutions. The brand’s 25 years of industry experience and global service network ensure that every water supply project gets professional, reliable and high-performance valve support—from municipal trunk pipelines to agricultural irrigation networks, from domestic key projects to overseas large-scale water supply undertakings.
In the future, WEIZIDOM will continue to focus on the water supply industry’s development needs, take technological innovation as the core driving force, and continuously upgrade large diameter valve performance, parameters and intelligence. The brand will further improve the global localized service network, providing more energy-saving, corrosion-resistant and intelligent fluid control solutions for global water supply project construction and development.
If you are looking for a professional, powerful and reliable large diameter water supply valve manufacturer with standardized parameters and rich project experience, WEIZIDOM is your best choice—contact us for customized water supply valve solutions today!
Tags: Large diameter valves for water supply systems Large diameter valves Water supply gate valves Water supply butterfly valves Water supply check valves Professional water supply valve manufacturer
Various Models for Your Choice
Have be any question? Feel free to Contact.
WEIZIDOM Group is specializes in the manufacturing, sale and after-sale service of valves, pipe fittings, water meters, flow meters and other pipeline accessories.
Copyright © 2026.WEIZIDOM All rights reserved.
