{"id":321,"date":"2025-02-06T08:27:15","date_gmt":"2025-02-06T08:27:15","guid":{"rendered":"https:\/\/www.matsudagovernor.com\/?post_type=product&p=321"},"modified":"2025-03-26T07:52:03","modified_gmt":"2025-03-26T07:52:03","slug":"varistroke-i","status":"publish","type":"product","link":"https:\/\/www.matsudagovernor.com\/th\/product\/varistroke-i\/","title":{"rendered":"VariStroke-I"},"content":{"rendered":"

The VariStroke-I is a linear electro-hydraulic actuator that is designed to provide the linear actuation force to operate steam turbine control valves or valve racks. This integrated actuator is intended for use on mechanicaldriven or generator-driven steam turbines and uses a low-pressure hydraulic oil source (typically
\nturbine lube oil) to provide its output shaft force.<\/p>\n

1. Dirt-tolerant design<\/strong>
\n1.1 Two moving parts
\n1.2 50 lbf chip shear force
\n1.3 Self-cleaning<\/p>\n

2. valve design<\/strong>
\n2.1 Variable \/ configurable shaft stroke lengths<\/p>\n

3. Fast slew rates\/times<\/strong>
\n3.1 Application dependent
\n3.2 Slew rate up to 762 mm\/s (30 inches\/second) @ 500 psig supply pressure and no load<\/p>\n

4. Precise position control<\/strong><\/p>\n

5. Side-load tolerant<\/strong>
\n5.1 Shaft bearings
\n5.2 Triple seal technology<\/p>\n

6. Integrated driver<\/strong>
\n6.1 Two 4\u201320 mA demand inputs
\n6.2 Included valve flow linearization table<\/p>\n

7. Redundant MLDT position sensors<\/strong>
\n8. Certified for Hazardous Locations<\/p>\n","protected":false},"excerpt":{"rendered":"

The VariStroke-I is a linear electro-hydraulic actuator that utilizes a double-acting or spring assist double acting power cylinder (part number dependent) with integrated electronic driver module, servo valve, and MLDT-based position feedback sensors to precisely control steam turbine valves. The actuator\u2019s driver module accepts one or two (redundant) 4\u201320 mA demand set points and compares these set points to the sensed actuator shaft position to accurately control output shaft position.<\/p>\n","protected":false},"featured_media":234,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":{"0":"post-321","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-actuator-governor-actuator","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nVariStroke-I - matsudagovernor<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"th_TH\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VariStroke-I - matsudagovernor\" \/>\n<meta property=\"og:description\" content=\"The VariStroke-I is a linear electro-hydraulic actuator that utilizes a double-acting or spring assist double acting power cylinder (part number dependent) with integrated electronic driver module, servo valve, and MLDT-based position feedback sensors to precisely control steam turbine valves. The actuator\u2019s driver module accepts one or two (redundant) 4\u201320 mA demand set points and compares these set points to the sensed actuator shaft position to accurately control output shaft position.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/\" \/>\n<meta property=\"og:site_name\" content=\"matsudagovernor\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-26T07:52:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.matsudagovernor.com\/wp-content\/uploads\/2025\/02\/VariStroke.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"602\" \/>\n\t<meta property=\"og:image:height\" content=\"627\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 \u0e19\u0e32\u0e17\u0e35\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/\",\"url\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/\",\"name\":\"VariStroke-I - matsudagovernor\",\"isPartOf\":{\"@id\":\"https:\/\/www.matsudagovernor.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.matsudagovernor.com\/wp-content\/uploads\/2025\/02\/VariStroke.webp\",\"datePublished\":\"2025-02-06T08:27:15+00:00\",\"dateModified\":\"2025-03-26T07:52:03+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/#breadcrumb\"},\"inLanguage\":\"th\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"th\",\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/#primaryimage\",\"url\":\"https:\/\/www.matsudagovernor.com\/wp-content\/uploads\/2025\/02\/VariStroke.webp\",\"contentUrl\":\"https:\/\/www.matsudagovernor.com\/wp-content\/uploads\/2025\/02\/VariStroke.webp\",\"width\":602,\"height\":627},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.matsudagovernor.com\/product\/varistroke-i\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.matsudagovernor.com\/th\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u0e2a\u0e34\u0e19\u0e04\u0e49\u0e32\",\"item\":\"https:\/\/www.matsudagovernor.com\/th\/shop\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"VariStroke-I\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.matsudagovernor.com\/#website\",\"url\":\"https:\/\/www.matsudagovernor.com\/\",\"name\":\"matsudagovernor\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.matsudagovernor.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"th\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"VariStroke-I - matsudagovernor","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":"th_TH","og_type":"article","og_title":"VariStroke-I - matsudagovernor","og_description":"The VariStroke-I is a linear electro-hydraulic actuator that utilizes a double-acting or spring assist double acting power cylinder (part number dependent) with integrated electronic driver module, servo valve, and MLDT-based position feedback sensors to precisely control steam turbine valves. 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