{"id":4576,"date":"2026-10-08T17:30:47","date_gmt":"2026-10-08T09:30:47","guid":{"rendered":"https:\/\/www.pansvalve.com\/?p=4576"},"modified":"2026-10-27T09:06:29","modified_gmt":"2026-10-27T01:06:29","slug":"ball-valve-fugitive-emissions-testing","status":"publish","type":"post","link":"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/","title":{"rendered":"Ball Valve Fugitive Emissions Testing: 7 RFQ Checks Before You Approve a Quote"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Tabla de contenido<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabla de contenidos\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Palanca<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#Quick_Answer\" >Respuesta r\u00e1pida:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#Where_Do_Fugitive_Emissions_Come_From_in_a_Ball_Valve\" >Where Do Fugitive Emissions Come From in a Ball Valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#Which_Test_Standard_Applies_to_Your_Ball_Valve\" >Which Test Standard Applies to Your Ball Valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#What_Should_a_Fugitive_Emissions_Test_Report_Contain\" >What Should a Fugitive Emissions Test Report Contain?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#What_Belongs_in_the_Supply_Scope\" >What Belongs in the Supply Scope?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#What_Should_Your_RFQ_Ask_For\" >What Should Your RFQ Ask For?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#Frequently_Asked_Questions\" >Preguntas frecuentes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-fugitive-emissions-testing\/#Final_Check_Before_You_Approve\" >Final Check Before You Approve<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quick_Answer\"><\/span><strong>Respuesta r\u00e1pida:<\/strong> <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A low-emission ball valve is only as strong as its evidence. Match the test standard to the valve design, confirm the report covers the exact size, class, materials and stem seal you are buying, and separate type-test qualification from production testing. A logo is not a report for the valve you will install. PANS trunnion-mounted ball valves use a supported ball and blowout-proof stem; the seat, stem seal, and test scope are confirmed for each order.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fugitive emissions are leaks to the atmosphere, usually at the stem seal and body joints. They are not the same as seat leakage, which is internal flow past a closed ball. This guide explains where ball valve fugitive emissions testing fits, which standards apply, and what to put in the request for quotation (RFQ).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_Do_Fugitive_Emissions_Come_From_in_a_Ball_Valve\"><\/span>Where Do Fugitive Emissions Come From in a Ball Valve?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A ball valve has three main external leak paths: the stem seal, body joints, and small threaded connections such as drain, vent and grease-injection ports. Seat leakage is a separate, internal path. A valve can pass a seat test and still leak at the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Body construction changes the joint count. A split-body trunnion valve has bolted body flanges; a fully welded body removes them but keeps the stem and any small ports. A top-entry body has one access joint; a side-entry body uses two or three sections. None of these designs is automatically low-emitting. Gasket selection, bolt load, surface finish and assembly control decide the result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Stem sealing is the hardest part to control. The stem rotates, so the seal must handle motion, pressure and temperature change without losing contact stress. A spring-loaded packing set, lip seal or bellows may be proposed, but the label is not evidence. Ask for the exact seal arrangement and its qualified temperature range. The ball support also affects stem load; compare <a href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/floating-ball-valve-vs-trunnion-ball-valve\/\" rel=\"noopener noreferrer\" target=\"_blank\">floating versus trunnion ball valve designs<\/a> at the same duty, not by general reputation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/top-entry-vs-side-entry-trunnion-ball-valve\/\" rel=\"noopener noreferrer\" target=\"_blank\">Top-entry and side-entry trunnion body designs<\/a> change maintenance access and joint count, not a guaranteed emission class. The test report must cover the construction you order.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1600\" height=\"900\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths.webp\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Large silver ball valve with red top actuator and black handwheel in a refinery, with callouts labeling the Stem Seal, Body Joint, and Drain\/Vent Port.\" class=\"wp-image-4574 lazyload\"\/><noscript><img decoding=\"async\" width=\"1600\" height=\"900\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths.webp\" alt=\"Large silver ball valve with red top actuator and black handwheel in a refinery, with callouts labeling the Stem Seal, Body Joint, and Drain\/Vent Port.\" class=\"wp-image-4574\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths.webp 1600w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths-300x169.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths-1024x576.webp 1024w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths-768x432.webp 768w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths-1536x864.webp 1536w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-external-emission-paths-18x10.webp 18w\" sizes=\"(max-width: 1600px) 100vw, 1600px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Which_Test_Standard_Applies_to_Your_Ball_Valve\"><\/span>Which Test Standard Applies to Your Ball Valve?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Standards are often listed as if interchangeable. They are not.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Est\u00e1ndar<\/th><th>What it covers<\/th><th>What it does not prove<\/th><\/tr><\/thead><tbody><tr><td>API 598<\/td><td>Shell and seat leakage test<\/td><td>Stem or body-joint emissions<\/td><\/tr><tr><td>API 607 \/ API 6FA<\/td><td>Fire exposure and post-fire sealing<\/td><td>Normal-operation fugitive emissions<\/td><\/tr><tr><td>ISO 15848-1<\/td><td>Type-test qualification and classification<\/td><td>That every delivered valve was tested<\/td><\/tr><tr><td>ISO 15848-2<\/td><td>Production acceptance test<\/td><td>Design qualification across a size range<\/td><\/tr><tr><td>API 641<\/td><td>Type testing of quarter-turn valves<\/td><td>Production testing of each valve<\/td><\/tr><tr><td>API 624<\/td><td>Type testing of rising-stem valves with graphite packing<\/td><td>Ball valve qualification<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">ISO 15848-2 specifies production acceptance testing for valves whose design has successfully passed ISO 15848-1 type testing. Confirm the existing qualification and specify any additional production testing required by the order.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The most common mix-up is ISO 15848-1 versus API 641. Both qualify a ball valve design, but use different test sequences and acceptance criteria. ISO 15848-1 classifies performance by tightness class, endurance class and temperature class; the tightness class applies to the stem sealing system. API 641 is a type test for quarter-turn valves. A project may accept either, so name the standard and edition in the RFQ. In practice, ISO 15848 valve testing and API 641 ball valve qualification are often quoted as if they were the same.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fire-safe and low-emission are also separate claims. A valve can pass a fire test and still leak at the stem, or show low emissions without fire qualification. If both matter, request both. Our <a href=\"https:\/\/www.pansvalve.com\/es\/blog\/ball-valve\/ball-valve-standards-and-certification-guide\/\" rel=\"noopener noreferrer\" target=\"_blank\">ball valve standards and certification guide<\/a> explains how these documents sit beside API 6D, API 608 and ASME B16.34, while the <a href=\"https:\/\/www.pansvalve.com\/es\/blog\/industrial-valves\/fire-safe-valves-api-607-guide\/\" rel=\"noopener noreferrer\" target=\"_blank\">API 607 fire-safe valve guide<\/a> covers the fire-test boundary.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Should_a_Fugitive_Emissions_Test_Report_Contain\"><\/span>What Should a Fugitive Emissions Test Report Contain?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Approve the report, not the cover page. A usable ball valve fugitive emissions testing report links the specimen to the quoted valve and shows the result at each stage.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Standard, part and edition \u2013 for example, ISO 15848-1:2015, not just \u201cISO 15848.\u201d<\/li>\n\n\n\n<li>Type test or production test \u2013 plus the report number and issue date.<\/li>\n\n\n\n<li>Exact specimen \u2013 model, size, class, body material, stem seal, packing, gasket and seat.<\/li>\n\n\n\n<li>Test gas and method \u2013 helium or methane, detector type, measurement points, calibration and background concentration.<\/li>\n\n\n\n<li>Pressure and temperature \u2013 test pressure, temperature class or profile, and soak time.<\/li>\n\n\n\n<li>Mechanical and thermal cycles \u2013 number, sequence and whether the valve was cycled under pressure.<\/li>\n\n\n\n<li>Measured leakage \u2013 values at each stage, not only \u201cpassed,\u201d plus the acceptance limit.<\/li>\n\n\n\n<li>Scope of validity \u2013 sizes, classes, materials and variants covered, and what needs re-testing.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Two checks are often missed. First, ask who witnessed the test and which laboratory issued the report. An in-house report can be valid, but know its origin. Second, ask how the report ties to the delivered valve. A type test covers a design family; a production test should carry the serial number or tag. If the quoted valve uses a different stem extension, cryogenic bonnet, actuator or gasket, confirm that the qualification still applies.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"1600\" height=\"900\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review.webp\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Large silver ball valve marked PANS DN600 PN16 WCB with red actuator, and a gloved worker holding a clipboard titled EVIDENCE REVIEW with checklist items, at an industrial plant.\" class=\"wp-image-4575 lazyload\"\/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"900\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review.webp\" alt=\"Large silver ball valve marked PANS DN600 PN16 WCB with red actuator, and a gloved worker holding a clipboard titled EVIDENCE REVIEW with checklist items, at an industrial plant.\" class=\"wp-image-4575\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review.webp 1600w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review-300x169.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review-1024x576.webp 1024w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review-768x432.webp 768w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review-1536x864.webp 1536w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/10\/ball-valve-rfq-test-evidence-review-18x10.webp 18w\" sizes=\"(max-width: 1600px) 100vw, 1600px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Belongs_in_the_Supply_Scope\"><\/span>What Belongs in the Supply Scope?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Test evidence is one part of the package. The purchase order should state what is supplied, who pays and what happens if a document is late.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Item<\/th><th>Why you need it<\/th><th>What to write in the PO<\/th><\/tr><\/thead><tbody><tr><td>Type-test report<\/td><td>Shows the design basis<\/td><td>Standard, edition, class, tested configuration<\/td><\/tr><tr><td>Production test report<\/td><td>Identifies the valves actually tested and the production lot represented<\/td><td><\/td><\/tr><tr><td>Inspection and test plan (ITP)<\/td><td>Defines inspection and hold points<\/td><td>Witness points, notice period<\/td><\/tr><tr><td>Material certificates<\/td><td>Ties body and trim to the order<\/td><td>EN 10204 3.1 or 3.2 as required<\/td><\/tr><tr><td>Spare packing or seal kit<\/td><td>Supports maintenance<\/td><td>Quantity, material, storage<\/td><\/tr><tr><td>Marking and traceability<\/td><td>Links valve to documents<\/td><td>Tag, heat number, nameplate data<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A certificate of conformity is not a test report. The certificate confirms the supplier\u2019s declaration; the report shows what was measured. If third-party inspection is required, name the inspection body and hold points in the RFQ before packing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Should_Your_RFQ_Ask_For\"><\/span>What Should Your RFQ Ask For?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Use these seven checks to turn a general ball valve fugitive emissions testing requirement into an auditable order.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Service envelope \u2013 medium, design and operating pressure, temperature range, ambient conditions and cycle frequency.<\/li>\n\n\n\n<li>Valve configuration \u2013 size, class, end connection, body style, ball support, seat, stem seal, gasket and trim.<\/li>\n\n\n\n<li>Test basis \u2013 standard, edition, tightness class, temperature class, endurance class and test gas.<\/li>\n\n\n\n<li>Test stage \u2013 type test, production test or both, and who witnesses each.<\/li>\n\n\n\n<li>Report scope \u2013 tested model, size and class, plus written confirmation that the quoted variant is covered.<\/li>\n\n\n\n<li>Document package \u2013 ITP, material test certificates, drawings, report language, copies and third-party inspection.<\/li>\n\n\n\n<li>Spares and lifecycle \u2013 packing or seal kit, replacement instructions and storage limits.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Put the answers in the quotation, not an email. A supplier who cannot state the tested configuration in writing leaves the risk with you. For a trunnion-mounted valve, start with the <a href=\"https:\/\/www.pansvalve.com\/es\/products\/trunnion-ball-valve\/\" rel=\"noopener noreferrer\" target=\"_blank\">PANS trunnion-mounted ball valve range<\/a>; check the final test scope against the order drawing and bill of materials.<\/p>\n\n\n\n<div class=\"cldg-card-container\" data-wp-draft-card=\"1\" data-wp-draft-template=\"v-fee0b72765030d57\" style=\"display:flex;flex-wrap:wrap-reverse;width:100%;margin:20px 0;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;background-color:#ffffff;font-family:&quot;Poppins&quot;, Arial, sans-serif\"><div class=\"cldg-card-text-column\" style=\"flex:55 1 300px;padding:30px;display:flex;flex-direction:column;justify-content:center\"><p class=\"cldg-card-title\" data-wp-card-role=\"title\" style=\"font-size:24px;font-weight:600;color:#111111;margin-top:0;margin-bottom:15px;line-height:1.3;text-transform:capitalize\">V\u00e1lvula de bola de mu\u00f1\u00f3n<\/p><p class=\"cldg-card-description\" data-wp-card-role=\"description\" style=\"font-size:16px;color:#444444;line-height:1.6;margin-bottom:20px\">Design and manufacture to API 608 \/ API 6D, face-to-face ASME B16.10, flange ends ASME B16.5, inspection and test to API 598. Fire-safe construction and anti-static design; actuators available.<\/p><a class=\"cldg-card-cta-button\" data-wp-card-role=\"button\" href=\"https:\/\/www.pansvalve.com\/es\/products\/trunnion-ball-valve\/\" rel=\"noopener noreferrer\" style=\"display:inline-block;width:fit-content;padding:10px 26px;font-size:16px;font-weight:600;color:#d70c19;background-color:#ffffff;border:2px solid #d70c19;border-radius:5px;text-decoration:none;text-align:center;line-height:1.4\" target=\"_blank\">View Valve Details<\/a><\/div><div class=\"cldg-card-image-column\" style=\"flex:45 1 260px;min-height:250px\"><a href=\"https:\/\/www.pansvalve.com\/es\/products\/trunnion-ball-valve\/\" rel=\"noopener noreferrer\" style=\"display:block;width:100%;height:100%\" target=\"_blank\"><img decoding=\"async\" class=\"lazyload\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2022\/04\/8.jpg\" alt=\"A large silver-gray flanged ball valve with a bolted body, black handwheel, red top flange, and the text PANS DN600 PN16 WCB on its side.\" data-wp-card-role=\"image\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" style=\"width:100%;height:100%;object-fit:cover;display:block\" \/><noscript><img decoding=\"async\" alt=\"A large silver-gray flanged ball valve with a bolted body, black handwheel, red top flange, and the text PANS DN600 PN16 WCB on its side.\" data-wp-card-role=\"image\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2022\/04\/8.jpg\" style=\"width:100%;height:100%;object-fit:cover;display:block\"><\/noscript><\/a><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Preguntas frecuentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>Is API 641 the same as ISO 15848-1?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. API 641 is a quarter-turn valve type test with its own sequence and criteria. ISO 15848-1 is a classification and qualification standard built around tightness, endurance and temperature classes. A project may accept either; the RFQ should say which.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>Does a fire-safe ball valve have low fugitive emissions?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Not necessarily. Fire-safe testing checks sealing after fire exposure. Fugitive emissions testing measures external leakage during defined mechanical and thermal cycles. They are separate qualifications and should be requested separately.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>Is ISO 15848-1 a certificate for every valve shipped?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Part 1 qualifies a design through type testing. Part 2 is the production acceptance test. If the project needs both, state both in the purchase order and require the production report to carry the serial number.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>What is the difference between seat leakage and fugitive emissions?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Seat leakage is internal flow past the closed ball. Fugitive emissions are external leaks to the atmosphere, mainly at the stem seal and body joints. A valve can pass a seat test and still fail an emissions test.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Check_Before_You_Approve\"><\/span>Final Check Before You Approve<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fugitive emissions approval is a document exercise before it is a valve purchase. Match the standard to the design, check the report against the exact configuration, and make the supply scope explicit. That is how a low-emission claim becomes an auditable decision.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Share your specification with PANS to request a quotation with the proposed test scope and document list. <a href=\"https:\/\/www.pansvalve.com\/es\/contact-us\/\" rel=\"noopener noreferrer\" target=\"_blank\">Send your RFQ to PANS<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-button\" data-wp-draft-contact=\"1\" data-wp-draft-fixed-text=\"Get a Quote\" style=\"display:block;width:100%;text-align:center;margin:32px 0\"><a class=\"wp-block-button__link has-white-color has-red-background-color has-text-color has-background has-link-color wp-element-button\" data-wp-card-role=\"contact-button\" href=\"https:\/\/www.pansvalve.com\/es\/contact-us\/\" rel=\"noopener noreferrer\" style=\"display:inline-block;padding:15px 30px;border-radius:0;background-color:#cf2e2e;color:#ffffff;font-family:Poppins,Arial,sans-serif;font-size:16px;font-weight:500;line-height:1.5;text-decoration:none;text-align:center\" target=\"_blank\">Consigue una cotizaci\u00f3n<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Quick Answer: A low-emission ball valve is only as strong as its evidence. Match the test standard to the valve design, confirm the report covers the exact size, class, materials and stem seal you are buying, and separate type-test qualification from production testing. A logo is not a report for the valve you will install. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4573,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[191],"tags":[43],"class_list":["post-4576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ball-valve","tag-valves"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ball Valve Fugitive Emissions Testing: 7 RFQ Checks<\/title>\n<meta name=\"description\" content=\"Ball valve fugitive emissions testing explained: ISO 15848 vs API 641, what a test report must prove, and the RFQ evidence to request before approval.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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