As water infrastructure, desalination plants, power stations, and industrial facilities continue to expand, the demand for reliable large-diameter valves has increased significantly. Among the most widely specified solutions is the 36 Inch Flanged Butterfly Valve<\/strong>, a cost-effective and highly efficient valve designed for large-volume flow control and isolation.<\/p>\n A butterfly valve featuring a Ductile Iron (DI) Body<\/strong>, ASTM B148 C95800 Nickel Aluminum Bronze Disc<\/strong>, \u0438 EPDM Seat<\/strong> combines excellent corrosion resistance, dependable sealing performance, and long service life, making it particularly suitable for seawater, cooling water, municipal water supply, and industrial utility applications.<\/p>\n This article explores the key advantages, design features, applications, and selection considerations for this popular valve configuration.<\/p>\n \u0410 36 Inch Flanged Butterfly Valve (DN900)<\/strong> is a quarter-turn valve designed to regulate or isolate fluid flow in large-diameter pipeline systems.<\/p>\n Unlike gate valves, which require multiple turns to open or close, butterfly valves use a rotating disc mounted on a shaft. Rotating the disc 90 degrees allows the valve to move from fully open to fully closed.<\/p>\n Because of their compact design and lightweight construction, butterfly valves have become the preferred choice for large pipeline systems worldwide.<\/p>\n The valve body serves as the primary pressure-containing component.<\/p>\n \u0410 Ductile Iron (DI) Body<\/strong> offers an ideal balance between strength, durability, and cost-effectiveness.<\/p>\n Compared to gray cast iron, ductile iron provides:<\/p>\n Ductile iron performs reliably in:<\/p>\n For large-diameter valves such as DN900, ductile iron significantly reduces manufacturing and installation costs compared to stainless steel alternatives.<\/p>\n The disc is the most critical wetted component of a butterfly valve.<\/p>\n For seawater and corrosive media, ASTM B148 C95800 Nickel Aluminum Bronze (NAB)<\/strong> is one of the industry’s preferred materials.<\/p>\n C95800 offers outstanding protection against:<\/p>\n In high-flow applications, cavitation can damage standard materials.<\/p>\n Nickel Aluminum Bronze provides:<\/p>\n Marine organisms tend to adhere less readily to NAB surfaces, reducing maintenance requirements in seawater applications.<\/p>\n The valve seat is responsible for achieving tight shutoff.<\/p>\n An EPDM (Ethylene Propylene Diene Monomer) Seat<\/strong> provides excellent sealing performance for water-related applications.<\/p>\n EPDM creates reliable sealing against the disc, ensuring minimal leakage.<\/p>\n Suitable for:<\/p>\n EPDM maintains flexibility even after prolonged outdoor exposure.<\/p>\n The material withstands repeated cycling without significant degradation.<\/p>\n A DN900 butterfly valve can efficiently manage high-volume flow systems while maintaining low pressure loss.<\/p>\n Benefits include:<\/p>\n Flanged connections provide secure installation and easy maintenance.<\/p>\n Advantages include:<\/p>\n Common standards include:<\/p>\n Large valves require additional operating torque.<\/p>\n Gear operators provide:<\/p>\n One of the most common uses for C95800-equipped butterfly valves.<\/p>\n Applications include:<\/p>\n Widely installed in:<\/p>\n Used for:<\/p>\n The C95800 disc makes the valve highly suitable for:<\/p>\n Frequently used in:<\/p>\n When selecting a butterfly valve, buyers often compare Nickel Aluminum Bronze and stainless steel discs.<\/p>\n For seawater applications, C95800 is generally considered the superior choice.<\/p>\n Many engineers evaluate both options during project design.<\/p>\n For large-diameter water systems, butterfly valves often provide significant economic and operational advantages.<\/p>\n A high-quality 36 Inch Butterfly Valve should undergo:<\/p>\n Verifies structural integrity under pressure.<\/p>\n Confirms sealing performance.<\/p>\n Ensures compliance with material specifications.<\/p>\n Confirms adherence to design standards.<\/p>\n Validates operational performance before shipment.<\/p>\n Before purchasing, consider:<\/p>\n Typical options include:<\/p>\n Available choices:<\/p>\n For seawater service:<\/p>\n remains one of the most cost-effective combinations available.<\/p>\n The 36 Inch Flanged Butterfly Valve with Ductile Iron Body, ASTM B148 C95800 Disc, and EPDM Seat<\/strong> represents an ideal solution for large-scale water and seawater applications. Its combination of mechanical strength, corrosion resistance, reliable sealing, and cost efficiency makes it a preferred choice for municipalities, desalination plants, power stations, and industrial facilities worldwide.<\/p>\n For projects requiring dependable performance in challenging environments, the DI\/C95800\/EPDM configuration continues to be one of the most trusted and widely specified butterfly valve designs available.<\/p>\n 36 Inch Flanged Butterfly Valve, DN900 Butterfly Valve, Ductile Iron Butterfly Valve, C95800 Disc Butterfly Valve, Nickel Aluminum Bronze Butterfly Valve, EPDM Seat Butterfly Valve, Seawater Butterfly Valve, Desalination Butterfly Valve, Large Diameter Butterfly Valve, Water Treatment Butterfly Valve, Marine Butterfly Valve, Industrial Butterfly Valve Manufacturer, China Butterfly Valve Supplier.<\/p>","protected":false},"excerpt":{"rendered":" STV Valve Technology Group Co., Ltd is a professional leader China 36 Inch Flange Butterfly Valve for seawater,flange ductile iron butterfly valve,Epdm Seat Butterfly Valve,C98500 Disc Butterfly Valve,36 Inch Butterfly Valve Manufacture with high quality and competitive price.<\/p>","protected":false},"featured_media":6660,"template":"","meta":[],"product_brand":[],"product_cat":[965,972],"product_tag":[1785,1781,1784,1783,1782],"class_list":{"0":"post-6658","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-butterfly-valve","7":"product_cat-flange-butterfly-valve","8":"product_tag-36-inch-butterfly-valve","9":"product_tag-butterfly-valve-for-seawater","10":"product_tag-c98500-disc-butterfly-valve","11":"product_tag-epdm-seat-butterfly-valve","12":"product_tag-flange-ductile-iron-butterfly-valve","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/product\/6658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/media\/6660"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/media?parent=6658"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/product_brand?post=6658"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/product_cat?post=6658"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/product_tag?post=6658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nWhat Is a 36 Inch Flanged Butterfly Valve?<\/h1>\n
Main Components<\/h3>\n
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\nWhy Choose a Ductile Iron Body?<\/h1>\n
Advantages of Ductile Iron<\/h2>\n
High Mechanical Strength<\/h3>\n
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Excellent Durability<\/h3>\n
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Cost Efficiency<\/h3>\n
\nBenefits of ASTM B148 C95800 Nickel Aluminum Bronze Disc<\/h1>\n
Superior Corrosion Resistance<\/h2>\n
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Excellent Cavitation Resistance<\/h2>\n
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Anti-Biofouling Properties<\/h2>\n
\nWhy EPDM Is the Ideal Seat Material<\/h1>\n
Advantages of EPDM Seats<\/h2>\n
Bubble-Tight Shutoff<\/h3>\n
Excellent Water Resistance<\/h3>\n
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Weather and Ozone Resistance<\/h3>\n
Long Service Life<\/h3>\n
\nKey Features of a 36 Inch Flanged Butterfly Valve<\/h1>\n
Large Diameter Flow Control<\/h2>\n
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\nFlanged End Connections<\/h2>\n
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\nGear Operated Design<\/h2>\n
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\nCommon Applications<\/h1>\n
Desalination Plants<\/h2>\n
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\nMunicipal Water Systems<\/h2>\n
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\nPower Generation Facilities<\/h2>\n
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\nMarine and Offshore Installations<\/h2>\n
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\nIndustrial Water Treatment<\/h2>\n
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\nC95800 Disc vs Stainless Steel Disc<\/h1>\n
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\n \nFeature<\/th>\n ASTM B148 C95800<\/th>\n Stainless Steel 316<\/th>\n<\/tr>\n<\/thead>\n \n Seawater Resistance<\/td>\n Excellent<\/td>\n Good<\/td>\n<\/tr>\n \n Cavitation Resistance<\/td>\n Excellent<\/td>\n Moderate<\/td>\n<\/tr>\n \n Chloride Resistance<\/td>\n Excellent<\/td>\n Moderate<\/td>\n<\/tr>\n \n Marine Service Life<\/td>\n Longer<\/td>\n \u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439<\/td>\n<\/tr>\n \n Initial Cost<\/td>\n Higher<\/td>\n Lower<\/td>\n<\/tr>\n \n Long-Term Cost<\/td>\n Lower<\/td>\n Higher<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nButterfly Valve vs Gate Valve for DN900 Pipelines<\/h1>\n
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\n \nFeature<\/th>\n \u0414\u0432\u0443\u0441\u0442\u0432\u043e\u0440\u0447\u0430\u0442\u044b\u0439 \u043a\u043b\u0430\u043f\u0430\u043d<\/th>\n \u0417\u0430\u0434\u0432\u0438\u0436\u043a\u0430<\/th>\n<\/tr>\n<\/thead>\n \n Weight<\/td>\n Lower<\/td>\n <\/td>\n<\/tr>\n \n Installation Space<\/td>\n Smaller<\/td>\n <\/td>\n<\/tr>\n \n Cost<\/td>\n Lower<\/td>\n <\/td>\n<\/tr>\n \n Operation Speed<\/td>\n Faster<\/td>\n <\/td>\n<\/tr>\n \n Maintenance<\/td>\n Lower<\/td>\n <\/td>\n<\/tr>\n \n Automation<\/td>\n Easier<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nQuality Assurance and Testing<\/h1>\n
Hydrostatic Shell Testing<\/h3>\n
Seat Leakage Testing<\/h3>\n
Material Verification<\/h3>\n
Dimensional Inspection<\/h3>\n
Functional Testing<\/h3>\n
\nHow to Select the Right 36 Inch Butterfly Valve<\/h1>\n
Media Type<\/h3>\n
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Pressure Rating<\/h3>\n
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Operation Method<\/h3>\n
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Material Requirements<\/h3>\n
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\n\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h1>\n
SEO Keywords<\/h3>\n