{"id":3300,"date":"2025-11-28T04:00:43","date_gmt":"2025-11-28T04:00:43","guid":{"rendered":"https:\/\/kateteco.com\/?post_type=product&p=3300"},"modified":"2025-11-28T04:01:42","modified_gmt":"2025-11-28T04:01:42","slug":"fisher-a31d","status":"publish","type":"product","link":"https:\/\/kateteco.com\/en\/product\/fisher-a31d\/","title":{"rendered":"Fisher\u2122 A31D Double-Flange Butterfly Valve | High-Performance for Throttling and On\/Off Applications"},"content":{"rendered":"\t\t
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Product Description<\/strong><\/span><\/h1>

The\u00a0Fisher\u2122 A31D Double-Flange Butterfly Valve<\/strong>\u00a0is a high-performance valve designed for reliable service in both throttling and on\/off applications. Engineered with a spline or key-driven shaft, it ensures precise control and durability in demanding industrial environments.<\/span><\/p>

This valve features a\u00a0pressure-assisted seal design<\/strong>\u00a0that provides tight shut-off, allowing for the use of smaller, more cost-effective actuators in applications requiring full ASME B16.34 shut-off capability. Its innovative design ensures that the torque required to open and close the valve remains consistent, regardless of the direction of the applied pressure. Furthermore, the valve incorporates a\u00a0shaft blow-out protection<\/strong>\u00a0feature for enhanced operational safety.<\/span><\/p>

For improved environmental performance, the optional\u00a0ENVIRO-SEAL\u2122 packing system<\/strong>\u00a0offers superior sealing, guidance, and load distribution, helping to control emissions effectively. The valve body self-centers on pipeline flange bolts, facilitating quick and accurate alignment during installation, while the seal retaining ring screws are positioned not to interfere with the gasket sealing function. The trim and bolting materials are also suitable for use in sour liquid and gas applications.<\/span><\/p>

Product Attributes<\/strong><\/span><\/h1>

For a quick overview, here are the key specifications of the Fisher A31D Valve.<\/span><\/p>

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Feature<\/span><\/th>Description<\/span><\/th><\/tr><\/thead>
Product Line<\/strong><\/span><\/td>Fisher\u2122 A31D<\/span><\/td><\/tr>
Valve Type<\/strong><\/span><\/td>High-Performance Butterfly Valve<\/span><\/td><\/tr>
Primary Applications<\/strong><\/span><\/td>Throttling, On\/Off Control<\/span><\/td><\/tr>
Flow Characteristic<\/strong><\/span><\/td>Linear<\/span><\/td><\/tr>
Body Materials<\/strong><\/span><\/td>Carbon Steel, Stainless Steel, Alloys<\/span><\/td><\/tr>
Service Temperature<\/strong><\/span><\/td>Standard Temperature, High Temperature<\/span><\/td><\/tr>
Pressure Rating<\/strong><\/span><\/td>ASME<\/span><\/td><\/tr>
End Connection Type<\/strong><\/span><\/td>Double Flanged<\/span><\/td><\/tr>
Shutoff Class<\/strong><\/span><\/td>Class VI (FCI 70-2), MSS SP-61<\/span><\/td><\/tr>
Certifications<\/strong><\/span><\/td>PED, CRN, Fugitive Emissions, NACE, ATEX, CUTR, Fire Safety<\/span><\/td><\/tr><\/tbody><\/table><\/div>

Specifications & Model Summary<\/strong><\/span><\/h1>

The Fisher\u2122 A31D Butterfly Valve is available in the following standard sizes to meet various application demands.<\/span><\/p>

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Valve Size (NPS)<\/span><\/th><\/tr><\/thead>
3<\/strong><\/span><\/td><\/tr>
4<\/strong><\/span><\/td><\/tr>
6<\/strong><\/span><\/td><\/tr>
8<\/strong><\/span><\/td><\/tr>
10<\/strong><\/span><\/td><\/tr>
12<\/strong><\/span><\/td><\/tr><\/tbody><\/table><\/div>

Note:<\/strong>\u00a0The A31D is designed for pressure classes CL150 and CL300. For more detailed technical specifications or custom configuration options, please contact our sales team.<\/span><\/p>

If you have any questions or are unsure about the correct Fisher\u2122 A31D model for your application, please do not hesitate to contact the\u00a0Kateteco sales team<\/strong>. Our technical experts are ready to assist you in selecting the perfect valve for your needs.<\/span><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Product display<\/span><\/strong><\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Fisher\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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MANUFACTURER ADVANTAGE<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Excelent equipment<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Imported brand The product styles are rich anddiverse Professiona quality and service<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Excellence in Fluid Automation, Superior System Performance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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–Powered by Premier Technical Expertise and One-Stop Services.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson\u2019s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.<\/span><\/p>

With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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When purchasing industrial spare parts, do you pay attention to the following points?<\/span><\/strong><\/h2>

\u2705 Is it 100% genuine? \u2014\u2014 We guarantee: All products are official and come with an 18-month warranty.<\/strong><\/span>
\u2705 Can it be delivered quickly? \u2014\u2014 We promise: Provide fast global delivery services to ensure your project progress.<\/strong><\/span>
\u2705 Is expert support available? \u2014\u2014 We offer: Full-process technical support, from selection guidance to installation and commissioning.<\/strong><\/span>
\u2705 Is the solution optimal? \u2014\u2014 We ensure: Recommend the most reliable and cost-effective solution based on your specific needs.<\/strong><\/span><\/p>

If any of the above points are crucial to you, please contact us immediately! <\/strong><\/span><\/h5>
WhatsApp\/Wechat: +86 18892208813<\/strong><\/span><\/h5>
Email: 18892208813@163.com\u00a0<\/strong><\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Andy Li<\/h2>\t\t\t\t

Sales Manager<\/h3>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t
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About Me<\/h3>\t\t\t\t

Sales Specialist in Valves, Imported Control Valves & Brand-Name Positioners.<\/p>\t\t\t<\/div>\n\t\t\t\n\t\t\t<\/div>\n\t\t\t

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<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

The\u00a0Fisher\u2122 A31D Double-Flange Butterfly Valve<\/strong>\u00a0is a high-performance valve designed for reliable service in both throttling and on\/off applications. Engineered with a spline or key-driven shaft, it ensures precise control and durability in demanding industrial environments.<\/p>\n","protected":false},"featured_media":3301,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[144,32],"product_cat":[15],"product_tag":[159],"class_list":{"0":"post-3300","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-control-valve","7":"product_brand-fisher","8":"product_cat-uncategorized","9":"product_tag-fisher-a31d-double-flange-butterfly-valve","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product\/3300","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/comments?post=3300"}],"version-history":[{"count":5,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product\/3300\/revisions"}],"predecessor-version":[{"id":3307,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product\/3300\/revisions\/3307"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/media\/3301"}],"wp:attachment":[{"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/media?parent=3300"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product_brand?post=3300"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product_cat?post=3300"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/kateteco.com\/en\/wp-json\/wp\/v2\/product_tag?post=3300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}