{"id":50992,"date":"2025-06-16T19:42:00","date_gmt":"2025-06-16T19:42:00","guid":{"rendered":"https:\/\/ncservo.com\/?post_type=product&#038;p=50992"},"modified":"2026-03-31T18:13:00","modified_gmt":"2026-03-31T18:13:00","slug":"ultra-4551925-4z","status":"publish","type":"product","link":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/","title":{"rendered":"ULTRA 4551-925-4Z"},"content":{"rendered":"<div id=\"wb-what-we-do\" class=\"wordbank-container\">\n<h2>How We Repair Your Unit<\/h2>\n<p>Our process involves a teardown of your ULTRA 4551-925-4Z, mineral bath and ultrasonic cleaning, and reassembly with quality parts to restore operation.<\/p>\n<\/div>\n<div id=\"wb-overview\" class=\"wordbank-container\">\n<h2>Key Details<\/h2>\n<p>Whether the issue is age, wear, or contamination, the ULTRA 4551-925-4Z can often be restored. NC Servo Tech applies the same structured approach to every rebuild.<\/p>\n<\/div>\n<div id=\"wb-faq\" class=\"wordbank-container\">\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"faq-accordion\">\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-0\">Will I be contacted if the unit is beyond repair?<\/button><\/h3>\n<div id=\"faq-content-0\" class=\"faq-content\">\n<p>If a unit is beyond repair, we explain why and can discuss replacement or exchange options.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-1\">Do you require the unit to be cleaned before shipping?<\/button><\/h3>\n<div id=\"faq-content-1\" class=\"faq-content\">\n<p>Not required, but removing excess oil or loose debris before packing helps keep things clean in transit.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-2\">Can you help identify what&#8217;s wrong with the unit?<\/button><\/h3>\n<div id=\"faq-content-2\" class=\"faq-content\">\n<p>Inspection and root-cause analysis are part of our standard process. We identify the issue before starting any repair work.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-3\">How quickly can you return a repaired unit?<\/button><\/h3>\n<div id=\"faq-content-3\" class=\"faq-content\">\n<p>It depends on the unit and scope of work. We provide an estimated timeline after initial evaluation.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-4\">Do you back your repairs with a warranty?<\/button><\/h3>\n<div id=\"faq-content-4\" class=\"faq-content\">\n<p>All repairs come with our standard 1-year parts and labor warranty. Contact us for specifics on your unit.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n<\/div>\n<div id=\"wb-why-us\" class=\"wordbank-container\">\n<h2>Why Repair With NC Servo<\/h2>\n<p>As a specialized repair facility, we have dedicated test equipment that general-purpose shops don&#8217;t. That means your ULTRA 4551-925-4Z gets serviced by people who work on these units regularly.<\/p>\n<p>Factory-level test stands dedicated to ULTRA 4551-925-4Z performance verification<\/p>\n<\/div>\n<div id=\"wb-process\" class=\"wordbank-container\">\n<h2>Disassembly and Rebuild Procedure<\/h2>\n<p>Every ULTRA 4551-925-4Z gets a controlled teardown on our bench. We document condition, replace what&#8217;s needed, and reassemble to proper operating condition.<\/p>\n<ul>\n<li>Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.<\/li>\n<li>Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.<\/li>\n<li>In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.<\/li>\n<li>Teardown: Every valve is disassembled for internal inspection.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-testing\" class=\"wordbank-container\">\n<h2>Diagnostic Testing<\/h2>\n<p>With our 13-stand test facility and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our performance testing verifies proper functionality.<\/p>\n<\/div>\n<div id=\"wb-service-offerings\" class=\"wordbank-container new-dynamic-section\">\n<h2>Additional ULTRA 4551-925-4Z Services<\/h2>\n<p>Beyond standard refurbishment, we offer specialized reconditioning for your ULTRA 4551-925-4Z unit. Our overhaul process includes pressure testing and mineral bath cleaning, using only new replacement components.<\/p>\n<\/div>\n<div id=\"wb-logistics-support\" class=\"wordbank-container new-dynamic-section\">\n<h2>Lead Times and Support<\/h2>\n<p>As a focused repair facility for ULTRA 4551-925-4Z services, NC Servo Tech targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.<\/p>\n<\/div>\n<div id=\"wb-tips\" class=\"wordbank-container\">\n<h2>Maintenance Tips<\/h2>\n<ul>\n<li>Schedule preventive maintenance intervals based on duty cycle, not just calendar time.<\/li>\n<li>Keep a spare ULTRA 4551-925-4Z on hand to minimize downtime during unplanned failures.<\/li>\n<li>Document all maintenance activities to track performance trends over time.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-cta\" class=\"wordbank-container\">\n<div class=\"cta-section\">\n<h2>Let Us Repair Your ULTRA 4551-925-4Z<\/h2>\n<p>Request pricing, availability, and turnaround for your ULTRA 4551-925-4Z. NC Servo Tech provides hands-on repair with a 1-year warranty. Contact us to set up your repair.<\/p>\n<div class=\"cta-buttons\"><a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/contact-us\/\" class=\"button quote-button\">Request a Quote<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/ultra\/\" class=\"button brand-button\">View All ULTRA Products<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/brand\/ultra\/\" class=\"button inventory-button\">Shop ULTRA Inventory<\/a><\/div>\n<\/div>\n<\/div>\n<div class=\"disclaimer-section\">\n<p class=\"disclaimer\"><strong>NC Servo Tech<\/strong> is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by ULTRA or any original equipment manufacturer (OEM), nor do we claim to be a ULTRA service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div id=\"wb-short-description\" class=\"short-description-container\">\n<p>Don&#8217;t let a faulty ULTRA 4551-925-4Z valve slow you down. Our technicians specialize in diagnosing and repairing these components, restoring them to working condition.<\/p>\n<\/div>\n","protected":false},"featured_media":57474,"template":"","meta":[],"product_brand":[648],"product_cat":[231],"product_tag":[152],"class_list":{"0":"post-50992","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-ultra","7":"product_cat-ultra","8":"product_tag-valve","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ULTRA 4551-925-4Z Valve Repair &amp; Rebuild<\/title>\n<meta name=\"description\" content=\"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ULTRA 4551-925-4Z Valve Repair &amp; Rebuild\" \/>\n<meta property=\"og:description\" content=\"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/\" \/>\n<meta property=\"og:site_name\" content=\"Nc Servo Technology\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/NCServo\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-31T18:13:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-content\/uploads\/2025\/12\/Moog-Hero.png\" \/>\n\t<meta property=\"og:image:width\" content=\"2176\" \/>\n\t<meta property=\"og:image:height\" content=\"1952\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@NcServo\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/\",\"url\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/\",\"name\":\"ULTRA 4551-925-4Z Valve Repair &amp; Rebuild\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/Moog-Hero.png\",\"datePublished\":\"2025-06-16T19:42:00+00:00\",\"dateModified\":\"2026-03-31T18:13:00+00:00\",\"description\":\"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/Moog-Hero.png\",\"contentUrl\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/Moog-Hero.png\",\"width\":2176,\"height\":1952},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/product\\\/ultra-4551925-4z\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Inventory\",\"item\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/inventory\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ULTRA 4551-925-4Z Valve Repair Quote\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#website\",\"url\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/\",\"name\":\"NC Servo Technology\",\"description\":\"We Buy &amp; Repair Servo Valves\",\"publisher\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#organization\",\"name\":\"NC Servo\",\"url\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"NC Servo\"},\"image\":{\"@id\":\"https:\\\/\\\/ncservo.com\\\/.wp-toolkit_m\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/NCServo\\\/\",\"https:\\\/\\\/x.com\\\/NcServo\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ULTRA 4551-925-4Z Valve Repair &amp; Rebuild","description":"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"ULTRA 4551-925-4Z Valve Repair &amp; Rebuild","og_description":"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!","og_url":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/","og_site_name":"Nc Servo Technology","article_publisher":"https:\/\/www.facebook.com\/NCServo\/","article_modified_time":"2026-03-31T18:13:00+00:00","og_image":[{"width":2176,"height":1952,"url":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-content\/uploads\/2025\/12\/Moog-Hero.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_site":"@NcServo","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/","url":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/","name":"ULTRA 4551-925-4Z Valve Repair &amp; Rebuild","isPartOf":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/#primaryimage"},"image":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/#primaryimage"},"thumbnailUrl":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-content\/uploads\/2025\/12\/Moog-Hero.png","datePublished":"2025-06-16T19:42:00+00:00","dateModified":"2026-03-31T18:13:00+00:00","description":"Need trusted, proven valve repair for your ULTRA 4551-925-4Z. 1-year warranty on parts and labor. Inquire today!","breadcrumb":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/#primaryimage","url":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-content\/uploads\/2025\/12\/Moog-Hero.png","contentUrl":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-content\/uploads\/2025\/12\/Moog-Hero.png","width":2176,"height":1952},{"@type":"BreadcrumbList","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/ultra-4551925-4z\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ncservo.com\/.wp-toolkit_m\/"},{"@type":"ListItem","position":2,"name":"Inventory","item":"https:\/\/ncservo.com\/.wp-toolkit_m\/inventory\/"},{"@type":"ListItem","position":3,"name":"ULTRA 4551-925-4Z Valve Repair Quote"}]},{"@type":"WebSite","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#website","url":"https:\/\/ncservo.com\/.wp-toolkit_m\/","name":"NC Servo Technology","description":"We Buy &amp; Repair Servo Valves","publisher":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ncservo.com\/.wp-toolkit_m\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#organization","name":"NC Servo","url":"https:\/\/ncservo.com\/.wp-toolkit_m\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#\/schema\/logo\/image\/","url":"","contentUrl":"","caption":"NC Servo"},"image":{"@id":"https:\/\/ncservo.com\/.wp-toolkit_m\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/NCServo\/","https:\/\/x.com\/NcServo"]}]}},"_links":{"self":[{"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/product\/50992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/media\/57474"}],"wp:attachment":[{"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/media?parent=50992"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/product_brand?post=50992"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/product_cat?post=50992"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/ncservo.com\/.wp-toolkit_m\/wp-json\/wp\/v2\/product_tag?post=50992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}