{"id":622,"date":"2026-09-16T06:59:26","date_gmt":"2026-09-16T06:59:26","guid":{"rendered":"https:\/\/wdlvalve.com\/product\/nickel-butterfly-valves\/"},"modified":"2026-09-16T08:21:03","modified_gmt":"2026-09-16T08:21:03","slug":"nickel-200-201-butterfly-valve","status":"publish","type":"product","link":"https:\/\/wdlvalve.com\/ar\/product\/nickel-200-201-butterfly-valve\/","title":{"rendered":"\u0635\u0645\u0627\u0645 \u0641\u0631\u0627\u0634\u0629 \u0645\u0646 \u0627\u0644\u0646\u064a\u0643\u0644 200\/201"},"content":{"rendered":"
\n
\n

\u0635\u0645\u0627\u0645 \u0641\u0631\u0627\u0634\u0629 \u0645\u0646 \u0627\u0644\u0646\u064a\u0643\u0644 200\/201<\/h2>\n

\u0627\u0644\u0640 WDL Nickel Butterfly Valve<\/strong> is manufactured for caustic
\nalkali, reducing chemicals and selected neutral process media. Nickel 200
\nand Nickel 201 are commercially pure nickel grades used where ordinary
\nstainless steel may experience unacceptable corrosion or contamination.<\/p>\n

WDL supplies nickel butterfly valves in wafer, lugged and double-flanged
\nconfigurations. Available designs include concentric soft-seated valves,
\ndouble-offset high-performance valves and triple-offset metal-seated
\nvalves. Each valve is selected according to the chemical composition,
\nconcentration, temperature, pressure and required shutoff performance.<\/p>\n<\/section>\n

\n

Why Use Nickel 200 or Nickel 201?<\/h2>\n

Nickel 200 and Nickel 201 provide useful resistance to caustic alkalis and
\nmany reducing or neutral media. Their high nickel content also provides
\ngood resistance to chloride-ion stress-corrosion cracking. These grades
\nare often considered for chemical systems where product purity and
\nresistance to alkaline corrosion are more important than initial material
\ncost.<\/p>\n

    \n
  • Suitable for many caustic soda and alkaline process conditions<\/li>\n
  • Useful resistance in selected reducing and neutral media<\/li>\n
  • Good resistance to chloride-ion stress-corrosion cracking<\/li>\n
  • Available as solid nickel or nickel-wetted construction<\/li>\n
  • Suitable for soft-seated and metal-seated butterfly valves<\/li>\n
  • Available with manual, pneumatic or electric operation<\/li>\n<\/ul>\n<\/section>\n
    \n

    Nickel 200 or Nickel 201: Which Grade Should Be Selected?<\/h2>\n

    Nickel 200 and Nickel 201 have similar corrosion behavior, but their carbon
    \ncontents and recommended temperature ranges are different. Nickel 201 has
    \na lower carbon content and is generally preferred when the alloy will be
    \nexposed to temperatures above 315\u00b0C. The complete valve temperature limit
    \nmay be lower because the seat, packing and actuator components must also be
    \nconsidered.<\/p>\n

    \n\n\n\n\n\n\n
    \u0627\u0644\u0645\u0648\u0627\u062f<\/th>\nUNS designation<\/th>\nMain difference<\/th>\nGeneral selection guidance<\/th>\n<\/tr>\n<\/thead>\n
    Nickel 200<\/td>\nUNS N02200<\/td>\nCommercially pure wrought nickel with a higher permitted carbon
    \ncontent than Nickel 201.<\/td>\n    		Commonly selected for caustic alkali and reducing or neutral media
    \nat temperatures below 315\u00b0C.<\/td>\n<\/tr>\n
    Nickel 201<\/td>\nUNS N02201<\/td>\nLow-carbon version of Nickel 200, reducing the risk of
    \ngraphitization during elevated-temperature exposure.<\/td>\n    		Normally preferred when the nickel components may operate above
    \n315\u00b0C, subject to the valve pressure and temperature rating.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
    \n

    Available Nickel Butterfly Valve Configurations<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n
    \u0627\u0644\u0639\u0646\u0635\u0631<\/th>\nAvailable options<\/th>\n<\/tr>\n<\/thead>\n
    Body configuration<\/td>\nWafer, lugged or double-flanged<\/td>\n<\/tr>\n
    Valve design<\/td>\nConcentric, double-offset or triple-offset<\/td>\n<\/tr>\n
    Wetted material<\/td>\nNickel 200, Nickel 201 or nickel-wetted construction<\/td>\n<\/tr>\n
    Seat options<\/td>\nPTFE, reinforced PTFE, PFA, elastomer or metal seat<\/td>\n<\/tr>\n
    \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n\u0630\u0631\u0627\u0639\u060c \u0639\u0644\u0628\u0629 \u062a\u0631\u0648\u0633\u060c \u0645\u0634\u063a\u0644 \u0647\u0648\u0627\u0626\u064a \u0623\u0648 \u0645\u0634\u063a\u0644 \u0643\u0647\u0631\u0628\u0627\u0626\u064a<\/td>\n<\/tr>\n
    Design references<\/td>\nAPI 609, EN 593, API 598, EN 12266-1 or specified project standards<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
    \n

    Applications of Nickel Butterfly Valves<\/h2>\n

    Nickel butterfly valves are primarily selected for chemical systems where
    \nalkaline corrosion, reducing conditions or product purity requirements
    \nmake carbon steel and common stainless steel unsuitable. The exact medium
    \nmust be checked before Nickel 200 or Nickel 201 is specified.<\/p>\n

      \n
    • Caustic soda production and transfer systems<\/li>\n
    • Alkali concentration and chemical recovery equipment<\/li>\n
    • Chemical and petrochemical processing<\/li>\n
    • Soap, detergent and alkaline cleaning systems<\/li>\n
    • Food and pharmaceutical process lines requiring controlled materials<\/li>\n
    • High-purity and demineralized water systems<\/li>\n
    • Metallurgical and chemical treatment equipment<\/li>\n
    • Selected gas-treatment and desulfurization process streams<\/li>\n<\/ul>\n<\/section>\n
      \n

      Media Compatibility Must Be Confirmed<\/h2>\n

      Nickel 200 and Nickel 201 are not universal materials for every corrosive
      \nchemical. Strongly oxidizing acids, oxidizing salt solutions, sulfur-bearing
      \nhigh-temperature media and mixed chemical streams may require another
      \nnickel alloy, titanium, zirconium or a fluoropolymer-lined valve.<\/p>\n

      Material selection should be based on the full chemical analysis, including
      \ncontaminants and dissolved gases. Concentration, operating temperature,
      \npressure, flow velocity, solids content and cleaning procedures can change
      \nthe expected corrosion behavior.<\/p>\n<\/section>\n

      \n

      \u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n

      What is the main difference between Nickel 200 and Nickel 201?<\/h3>\n

      Nickel 201 contains less carbon than Nickel 200. The reduced carbon content
      \nlowers the risk of graphitization during extended exposure above 315\u00b0C,
      \nmaking Nickel 201 the usual choice for higher-temperature applications.<\/p>\n

      Are Nickel 200 butterfly valves suitable for caustic soda?<\/h3>\n

      Nickel 200 is frequently considered for caustic soda and other alkaline
      \nmedia. The final selection must account for concentration, temperature,
      \nimpurities, pressure and flow conditions.<\/p>\n

      Can WDL supply a solid nickel butterfly valve?<\/h3>\n

      Yes. Depending on size, pressure rating and project requirements, WDL can
      \nevaluate solid Nickel 200 or Nickel 201 wetted components. Nickel-clad or
      \nnickel-wetted constructions may also be considered when technically
      \nsuitable.<\/p>\n

      Can nickel butterfly valves use pneumatic actuators?<\/h3>\n

      Yes. WDL can supply nickel butterfly valves with pneumatic or electric
      \nactuators. Solenoid valves, limit-switch boxes, positioners and air filter
      \nregulators can be included according to the control specification.<\/p>\n

      What information is required for a quotation?<\/h3>\n

      Please provide the valve size, pressure rating, medium composition,
      \nconcentration, temperature, flange standard, seat requirement, actuator
      \ntype and quantity. A chemical datasheet is recommended for mixed or
      \nhigh-temperature media.<\/p>\n<\/section>\n

      \n

      Custom Nickel Butterfly Valves from WDL<\/h2>\n

      WDL supplies Nickel 200 and Nickel 201 butterfly valves for new projects
      \nand replacement applications. Available project documents can include
      \nmaterial certificates, dimensional drawings, pressure-test reports and
      \ninspection records when specified in the purchase order.<\/p>\n

      Send the process data and valve specification to WDL for material review
      \nand quotation.<\/p>\n<\/section>\n

      Technical content reviewed: September 2026.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"

      WDL Nickel 200\/201 Butterfly Valves are designed for caustic alkali and selected reducing or neutral chemical media. Wafer, lugged and flanged designs are availabl.<\/p>","protected":false},"featured_media":620,"comment_status":"open","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product_brand":[],"product_cat":[34,32,31,45],"product_tag":[],"class_list":["post-622","product","type-product","status-publish","has-post-thumbnail","product_cat-butterfly-valves","product_cat-valve-materials","product_cat-valve-types","product_cat-nickel-alloy-valves","first","instock","shipping-taxable","product-type-simple","entry","content-bg","loop-entry"],"_links":{"self":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/product\/622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/comments?post=622"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/media\/620"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/media?parent=622"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/product_brand?post=622"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/product_cat?post=622"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/product_tag?post=622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}