{"id":991168,"date":"2025-10-06T06:41:14","date_gmt":"2025-10-06T06:41:14","guid":{"rendered":"https:\/\/zaes.es\/?p=991168"},"modified":"2025-10-06T06:43:21","modified_gmt":"2025-10-06T06:43:21","slug":"learn-to-select-and-maintain-instrumentation-manifolds-under-iso-15848-and-api-6d-technical-guide-for-zaes-leading-industrial-valves-manufacturer","status":"publish","type":"post","link":"https:\/\/zaes.es\/en\/aprende-a-elegir-y-mantener-manifolds-de-instrumentacion-segun-norma-iso-15848-y-api-6d-guia-tecnica-de-zaes-fabricante-lider-en-valvulas-industriales\/","title":{"rendered":"Learn how to select and maintain instrumentation manifolds according to ISO 15848 and API 6D. Technical guide from ZAES, a leading manufacturer of industrial valves."},"content":{"rendered":"
\"\"<\/p>\n

1\ufe0f<\/u>.<\/u> Introduction: why manifolds are key to industrial instrumentation:<\/u><\/h3>\n

In any industrial installation - be it a oil and gas<\/strong>, petrochemicals<\/strong>, energy<\/strong> o water treatment<\/strong>-The instrumentation manifolds<\/strong> are essential components.
\nIts main function is to isolating, purging and calibrating measuring instruments<\/strong> (such as pressure transmitters or flowmeters) without interrupting the process.<\/p>\n

At ZAES<\/strong>as manufacturer of industrial valves and manifolds<\/strong> with decades of experience, we've put together this technical guide to help you to choosing, installing and maintaining<\/strong> correctly an instrumentation manifold.<\/p>\n

Here you will find selection criteria, preventive maintenance, suitable materials and international standards that guarantee the safety and reliability<\/strong> of the system.<\/p>\n

2\ufe0f<\/u>.<\/u> What is an instrumentation manifold:<\/u><\/h3>\n

A instrumentation manifold<\/strong> is a set of interconnected valves to control the flow of fluids to a measuring instrument.
\nIt aims to facilitate operations such as:<\/p>\n

    \n
  • Isolation<\/strong> of the instrument without stopping the process line.<\/li>\n
  • Purging or draining<\/strong><\/li>\n
  • Pressure calibration and equalisation<\/strong>.<\/li>\n
  • Maintenance or replacement<\/strong> of measuring equipment.<\/li>\n<\/ul>\n

    3\ufe0f<\/u>.<\/u> Manifold types: 2, 3 and 5 valves:<\/u><\/h3>\n

     <\/p>\n

    - 2-valve manifold<\/strong><\/p>\n

      \n
    • Used in measurements of static pressure<\/strong> or level.<\/li>\n
    • It consists of an isolation valve and a bleed valve.<\/li>\n
    • Ideal for pressure transmitters in general applications.<\/li>\n<\/ul>\n

      - 3-valve manifold<\/strong><\/p>\n

        \n
      • Designed for differential pressure<\/strong>.<\/li>\n
      • It includes two isolation valves and one equalisation valve.<\/li>\n
      • Allows calibration without disassembling the instrument, balancing both pressure lines.<\/li>\n<\/ul>\n

        -\u00a0 5-valve manifold<\/strong><\/p>\n

          \n
        • Recommended when the following are required frequent calibrations<\/strong>.<\/li>\n
        • It has two isolation valves, one equalisation valve and two purge valves.<\/li>\n
        • Facilitates maintenance and cleaning tasks in complete safety.<\/li>\n<\/ul>\n

          4\ufe0f<\/u>.<\/u> Most commonly used materials:<\/u><\/h3>\n

           <\/p>\n\n\n\n\n\n\n\n\n\n
          Material<\/strong><\/td>\nTypical application<\/strong><\/td>\nFeatures<\/strong><\/td>\n<\/tr>\n<\/thead>\n
          316L stainless steel<\/strong><\/td>\nWater, steam, inert gases<\/td>\nHigh corrosion resistance, good weldability and durability.<\/td>\n<\/tr>\n
          Hastelloy\u00ae C-276<\/strong><\/td>\nAcids, strong oxidants and highly corrosive media<\/td>\nExcellent chemical and thermal resistance.<\/td>\n<\/tr>\n
          Monel\u00ae 400<\/strong><\/td>\nFluids with chlorides, hydrocarbons and marine environments<\/td>\nHigh resistance to corrosion, cavitation and fatigue.<\/td>\n<\/tr>\n
          Duplex (UNS S32205 \/ 1.4462)<\/strong><\/td>\nSeawater, pulp and paper, chemical applications<\/td>\nHigh mechanical and chloride corrosion resistance, ideal for demanding services.<\/td>\n<\/tr>\n
          Super Duplex (UNS S32750 \/ 1.4410)<\/strong><\/td>\nMarine environments, brine, offshore plants or desalination plants<\/td>\nMaximum resistance to stress corrosion and excellent high pressure behaviour.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          <\/h2>\n

          ZAES Council:<\/u><\/strong><\/em> for services with H\u2082S or corrosive environments<\/strong>Always check the compatibility of the material with the standard. NACE MR0175 \/ ISO 15156<\/strong>.<\/h2>\n

          5\ufe0f<\/u>.<\/u> Technical standards to be met by an industrial manifold:<\/u><\/h3>\n

          Complying with international standards ensures the safety, watertightness and reliability<\/strong> of valves and manifolds.
          \nThese are the most relevant in the sector:<\/p>\n

            \n
          • ISO 15848<\/strong> \u2192 Fugitive emissions in industrial valves.<\/li>\n
          • API 6D<\/strong> \u2192 Design and testing of oil and gas pipeline valves.<\/li>\n
          • EN 12266-1 \/ ISO 5208<\/strong> \u2192 Tightness tests and acceptance criteria.<\/li>\n
          • MSS SP-99<\/strong> \u2192 Manifolds and instrumentation valves: pressures, connections and sizes.<\/li>\n<\/ul>\n

            6\ufe0f<\/u>. <\/u>How to choose the right manifold:<\/u><\/h3>\n

            Before defining the model, analyse:<\/p>\n

              \n
            1. Type of measurement<\/strong> \u2192 static or differential.<\/li>\n
            2. Working pressure and temperature<\/strong>.<\/li>\n
            3. Type of fluid<\/strong> (gaseous, liquid or corrosive).<\/li>\n
            4. Mounting configuration<\/strong> (direct to transmitter or remote with tubing).<\/li>\n
            5. Applicable standards<\/strong> to the project (API, ISO, PED, ATEX, etc.).<\/li>\n<\/ol>\n

              Pro tip:<\/u><\/strong><\/em> an oversized manifold or a manifold with unsuitable material can lead to leaks, loss of accuracy or maintenance cost overruns.<\/p>\n

              7\ufe0f<\/u>.<\/u> Preventive maintenance and good practice:<\/u><\/h3>\n

              Regular maintenance prevents leaks, failures and downtime.
              \nZAES recommends:<\/p>\n

                \n
              • Visual inspection<\/strong> every 6 months.<\/li>\n
              • Tightness tests<\/strong> in accordance with EN 12266-1<\/strong>.<\/li>\n
              • Cleaning of internal ducts<\/strong> and verification of entries.<\/li>\n
              • Lubrication<\/strong> of stems and seals with compatible products.<\/li>\n
              • Replacement of seals<\/strong> and components according to preventive plan.<\/li>\n<\/ul>\n

                In addition, in critical processes, it is advisable to perform a transmitter calibration<\/strong> after any intervention on the manifold.<\/p>\n

                8\ufe0f<\/u>.<\/u> Safety and environment: fugitive emissions:<\/u><\/h3>\n

                The fugitive emissions<\/strong> are small leaks of gases escaping through gaskets or joints.
                \nComplying with the standard ISO 15848<\/strong> ensures that the ZAES manifolds and valves reduce these emissions, contributing to the sustainability and environmental safety<\/strong>.<\/p>\n

                9\ufe0f<\/u>.<\/u> ZAES: experience and reliability in industrial valves:<\/u><\/h3>\n

                With more than 50 years of experience, ZAES<\/strong> is positioned as European benchmark for industrial valves and instrumentation manifolds<\/strong>.
                \nThe company offers solutions designed and manufactured to the highest standards of quality, combining in-house engineering<\/strong>, European production<\/strong> y personalised technical advice<\/strong>.<\/p>\n

                In a market where giants such as Emerson (Fisher)<\/strong>, Flowserve<\/strong>, Valmet (Neles)<\/strong>, KSB<\/strong> o Swagelok<\/strong>ZAES stands out for its proximity, flexibility and speed of supply<\/strong> -in addition to its commitment to certified quality.<\/p>\n

                10\ufe0f<\/u>.<\/u> Conclusion: precision, security and confidence:<\/u><\/h3>\n

                Selecting the right manifold is more than a question of a catalogue:
                \nis a technical decision that has a direct impact on the safety, efficiency and maintenance<\/strong> of the entire plant.<\/p>\n

                With this guide, ZAES reaffirms its commitment to the precision engineering<\/strong>the operational reliability<\/strong> and the customised technical support<\/strong>.<\/div>\n

                <\/p>","protected":false},"excerpt":{"rendered":"

                1\ufe0f. Introducci\u00f3n: por qu\u00e9 los manifolds son clave en la instrumentaci\u00f3n industrial: En cualquier instalaci\u00f3n industrial \u2014ya sea de petr\u00f3leo y gas, petroqu\u00edmica, energ\u00eda o tratamiento de agua\u2014, los manifolds de instrumentaci\u00f3n son componentes esenciales. Su funci\u00f3n principal es aislar, purgar y calibrar instrumentos de medici\u00f3n (como transmisores de presi\u00f3n o caudal\u00edmetros) sin necesidad de…<\/p>","protected":false},"author":1,"featured_media":991169,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[129,130],"tags":[],"class_list":["post-991168","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-noticias"],"yoast_head":"\nAprende a elegir y mantener manifolds de instrumentaci\u00f3n seg\u00fan norma ISO 15848 y API 6D. 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Introducci\u00f3n: por qu\u00e9 los manifolds son clave en la instrumentaci\u00f3n industrial: En cualquier instalaci\u00f3n industrial \u2014ya sea de petr\u00f3leo y gas, petroqu\u00edmica, energ\u00eda o tratamiento de agua\u2014, los manifolds de instrumentaci\u00f3n son componentes esenciales. 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