{"id":18663,"date":"2026-05-25T01:25:35","date_gmt":"2026-05-25T01:25:35","guid":{"rendered":"https:\/\/oudianvalve.com\/?post_type=product&p=18663"},"modified":"2026-05-25T01:41:46","modified_gmt":"2026-05-25T01:41:46","slug":"pn16-321-globe-valve-dn65-rf-end","status":"publish","type":"product","link":"https:\/\/oudianvalve.com\/de\/products\/globe-valves\/pn16-321-globe-valve-dn65-rf-end\/","title":{"rendered":"PN16 321 Globe Valve,DN65,RF End"},"content":{"rendered":"

321 Globe Valve<\/h1>\n
<\/div>\n
321 Globe Valve<\/strong> is a globe valve made of 321 stainless steel (UNS S32100 \/ EN 1.4541 \/ ASTM A351 CF8C \/ A182 F321)<\/strong> \u2014 a titanium\u2011stabilized austenitic stainless steel, designed for high\u2011temperature service, anti\u2011sensitization, and general corrosion resistance<\/strong>.<\/div>\n
<\/div>\n
\n

Material: 321 Stainless Steel<\/h2>\n
<\/div>\n
    \n
  • Standard<\/strong>: GB\/T 1220, ASTM A240 \/ A351 \/ A182, EN 10088\u20111<\/li>\n
  • Composition<\/strong>: Cr\u202f17\u201319%, Ni\u202f9\u201312%, Ti \u2265\u202f5\u00d7C% (key addition)<\/li>\n
  • Core Properties<\/strong>:\n
    <\/div>\n

    High\u2011temperature stability<\/strong>: Usable from \u2011196\u00b0C to +550\u00b0C<\/strong>, short\u2011term up to 815\u00b0C<\/p>\n

    <\/div>\n

    Anti\u2011intergranular corrosion<\/strong>: Titanium binds carbon \u2192 no chromium carbide precipitation; no sensitization after welding or heat exposure<\/strong> \u2014 biggest advantage over 304\/304L<\/p>\n

    <\/div>\n

    Corrosion resistance<\/strong>: Good in atmosphere, water, steam, weak acids, organic chemicals; similar to 304 in general media<\/p>\n

    <\/div>\n

    Mechanics<\/strong>: Tensile \u2265\u202f515\u202fMPa, Yield \u2265\u202f205\u202fMPa; good ductility & weldability<\/li>\n

  • Einschr\u00e4nkungen<\/strong>: \u274c Poor chloride resistance<\/strong> \u2192 avoid seawater, brine, salt solutions; \u274c not for strong reducing acids (HCl, dilute H\u2082SO\u2084)<\/li>\n<\/ul>\n
    <\/div>\n
    \n
    <\/div>\n

    Full Specifications<\/h2>\n

    Basic Data<\/h3>\n
      \n
    • Model<\/strong>: J41W\u2011PN16\/25\/40\/64<\/strong>\u2011321 (flanged globe valve)<\/li>\n
    • Pressure<\/strong>: PN16 \u2013 PN64 \/ Class\u202f150 \u2013 Class\u202f600<\/li>\n
    • Gr\u00f6\u00dfe<\/strong>: DN15 \u2013 DN600 (\u00bd\u2033 \u2013 24\u2033)<\/li>\n
    • Standards<\/strong>: GB\/T\u202f12235, ASME\u202fB16.34, API\u202f603, BS\u202f1873<\/li>\n
    • Ends<\/strong>: Flanged (RF\/RTJ), Butt\u2011weld, Socket\u2011weld, Threaded<\/li>\n
    • Face\u2011to\u2011Face<\/strong>: GB\/T\u202f12221, ASME\u202fB16.10<\/li>\n
    • Test<\/strong>: GB\/T\u202f13927, API\u202f598<\/li>\n<\/ul>\n

      \u00a0Standard Material BOM<\/h3>\n<\/div>\n
      \n\n\n\n\n\n\n\n\n\n
      Part<\/th>\nMaterial<\/th>\nNote<\/th>\n<\/tr>\n<\/thead>\n
      Body \/ Bonnet<\/td>\n321 \/ F321 \/ CF8C<\/strong><\/td>\nCast or forged<\/td>\n<\/tr>\n
      Disc \/ Seat \/ Stem<\/td>\n321<\/strong> or 13Cr \/ Stellite hardfacing<\/td>\nFor wear & erosion<\/td>\n<\/tr>\n
      Gasket<\/td>\nGraphite + 321 \/ PTFE<\/td>\nHigh temp: graphite<\/td>\n<\/tr>\n
      Packing<\/td>\nPTFE \/ Expanded Graphite<\/td>\n\u2264200\u00b0C: PTFE; >200\u00b0C: graphite<\/td>\n<\/tr>\n
      Fasteners<\/td>\n321 \/ 304 \/ Alloy\u202fA286<\/td>\nHigh\u2011temp use: A286<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
      <\/div>\n
      \n

      Key Advantages<\/h2>\n
        \n
      1. Best for High\u2011Temp + Welded Systems<\/strong>:\n
          \n
        • No intergranular corrosion<\/strong> after welding or long service at 400\u2013550\u00b0C \u2192 far better than 304\/316<\/strong><\/li>\n
        • Ideal for steam, superheated steam, hot oil, heat transfer systems, furnace lines<\/li>\n<\/ul>\n
          <\/div>\n<\/li>\n
        • Reliable General Corrosion<\/strong>:\n
            \n
          • Excellent in water, steam, air, neutral chemicals, food, petroleum, refinery, and petrochemical processes<\/li>\n<\/ul>\n
            <\/div>\n<\/li>\n
          • Easy Fabrication<\/strong>: Excellent weldability, no post\u2011weld heat treatment needed<\/li>\n
          • Good Throttling<\/strong>: Globe valve design = precise flow control, tight shut\u2011off<\/li>\n<\/ol>\n
            <\/div>\n
            \n
            <\/div>\n

            \u00a0Typical Applications<\/h2>\n
              \n
            • Power & Energy<\/strong>: Steam lines, boilers, turbine systems, heat networks<\/li>\n
            • Petrochemical<\/strong>: Refineries, ethylene plants, high\u2011temperature process lines<\/li>\n
            • Chemical<\/strong>: Organic acids, alcohols, solvents, high\u2011temperature neutral media<\/li>\n
            • Heating & HVAC<\/strong>: Hot oil, thermal fluid, high\u2011pressure hot water<\/li>\n
            • Industrial Furnaces<\/strong>: High\u2011temperature gas & air lines<\/li>\n
            • NOT FOR<\/strong>: Seawater, brine, chlorides, HCl, sulfuric acid<\/li>\n<\/ul>\n<\/div>\n
              Comparison: 321 vs 304 \/ 316 \/ TA2<\/strong><\/div>\n
              <\/div>\n
              \n\n\n\n\n\n\n\n\n\n
              Condition<\/th>\nChoice<\/th>\nReason<\/th>\n<\/tr>\n<\/thead>\n
              High temp (400\u2013550\u00b0C) + welded<\/strong><\/td>\n321<\/strong><\/td>\n304\/316 will fail by intergranular corrosion<\/td>\n<\/tr>\n
              General corrosion, <300\u00b0C<\/td>\n304 \/ 316<\/td>\nCheaper, similar performance<\/td>\n<\/tr>\n
              Seawater \/ brine<\/td>\nTA2<\/strong><\/td>\n321 will pit & corrode rapidly<\/td>\n<\/tr>\n
              Strong acids<\/td>\n316L \/ Alloy\u202fC4<\/td>\n321 not suitable<\/td>\n<\/tr>\n
              High\u2011temp + chloride<\/td>\nInconel\u202f625 \/ Hastelloy<\/td>\n321 cannot resist<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
              <\/div>\n
              \n
              \n
              Rule<\/strong>:<\/p>\n
              <\/div>\n

              Choose 321 = high temperature + welding + no chlorides<\/strong><\/em><\/div>\n

              <\/div>\n<\/blockquote>\n
              <\/div>\n
              \n
              <\/div>\n

              \u00a0Installation & Operation Rules<\/h2>\n
              <\/div>\n
                \n
              1. Flow direction<\/strong>: Standard \u2014 flow under disc<\/strong><\/li>\n
              2. Temperature<\/strong>: Max continuous \u2264\u202f550\u00b0C<\/strong>; above this strength drops sharply<\/li>\n
              3. Welding<\/strong>: Use ER321 \/ ER347 filler<\/strong>; no post\u2011weld heat treatment required<\/li>\n
              4. Avoid chloride contamination<\/strong>: No salt, brine, or bleach service \u2014 causes pitting<\/li>\n
              5. Galvanic<\/strong>: Compatible with other stainless steels; no special isolation needed<\/li>\n<\/ol>\n
                <\/div>\n
                \n
                <\/div>\n

                \u00a0FAQ: 321 Globe Valve<\/h2>\n
                <\/div>\n
                Q1: Why choose 321 instead of 304?<\/strong><\/div>\n
                <\/div>\n
                \n
                A:<\/strong> Only 321 stays corrosion\u2011resistant after welding or heating to 400\u2013550\u00b0C<\/strong>. 304 becomes sensitive and corrodes fast.<\/div>\n
                <\/div>\n<\/blockquote>\n
                <\/div>\n
                Q2: Can it be used for steam?<\/strong><\/div>\n
                <\/div>\n
                \n
                A:<\/strong> Excellent choice<\/strong> \u2014 standard material for high\u2011temperature steam valves worldwide.<\/div>\n
                <\/div>\n<\/blockquote>\n
                <\/div>\n
                Q3: How does it compare to 316?<\/strong><\/div>\n
                <\/div>\n
                \n
                A:<\/strong> 316 better for chemical corrosion; 321 far better for high\u2011temperature welded service<\/strong>.<\/div>\n
                <\/div>\n<\/blockquote>\n
                <\/div>\n
                Q4: Is it expensive?<\/strong><\/div>\n
                <\/div>\n
                \n
                A:<\/strong> ~1.2\u00d7\u202f304, ~0.9\u00d7\u202f316 \u2014 very cost\u2011effective for its specific strength.<\/div>\n
                <\/div>\n<\/blockquote>\n
                \n
                <\/div>\n
                Final Selection Guide<\/strong><\/div>\n
                <\/div>\n
                  \n
                • Choose 321 Globe Valve<\/strong> = when you need globe valve control + high temperature (300\u2013550\u00b0C) + welded construction + general corrosion resistance + NO chlorides<\/strong><\/li>\n
                • It is the standard workhorse<\/strong> for steam, power, refinery, and high\u2011temperature process lines.<\/li>\n<\/ul>\n<\/div>\n
                  <\/div>\n
                  <\/div>\n
                  <\/div>\n
                  <\/div>","protected":false},"excerpt":{"rendered":"

                  China 321 Globe Valve Factory ,DIN 3356 321 Globe Valve,DN65 321 Globe Valve,PN65 321 Globe Valve.<\/p>","protected":false},"featured_media":18667,"template":"","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false},"product_brand":[],"product_cat":[80],"product_tag":[729,730,731,732],"class_list":{"0":"post-18663","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-globe-valves","7":"product_tag-china-321-globe-valve-factory","8":"product_tag-din-3356-321-globe-valve","9":"product_tag-dn65-321-globe-valve","10":"product_tag-pn65-321-globe-valve","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/product\/18663","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/media\/18667"}],"wp:attachment":[{"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/media?parent=18663"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/product_brand?post=18663"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/product_cat?post=18663"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/oudianvalve.com\/de\/wp-json\/wp\/v2\/product_tag?post=18663"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}